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         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2b229bbb8484430603ebe8e5e9fa1018a/ipappwiedmann",         
         "tags" : [
            "Effect","Electrochim","catalyst","cells","exchange","for","fuel","high-boiling","inkjet","layers","membrane","of","on","point","printing","proton","solvents"
         ],
         
         "intraHash" : "b229bbb8484430603ebe8e5e9fa1018a",
         "interHash" : "600772000b70788e9cbb6d9126e23c06",
         "label" : "Effect of high-boiling point solvents on inkjet printing of catalyst layers for proton exchange membrane fuel cells, Electrochim",
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         "date" : "2025-05-12 11:24:16",
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         "pub-type": "article",
         "journal": "Electrochim. Acta",
         "year": "2024", 
         "url": "", 
         
         "author": [ 
            "T. Zierdt","J. Knake","J Müller-Hülstede","D. Schonvogel","P. Wagner","M. Wark"
         ],
         "authors": [
         	
            	{"first" : "T.",	"last" : "Zierdt"},
            	{"first" : "J.",	"last" : "Knake"},
            	{"first" : "J",	"last" : "Müller-Hülstede"},
            	{"first" : "D.",	"last" : "Schonvogel"},
            	{"first" : "P.",	"last" : "Wagner"},
            	{"first" : "M.",	"last" : "Wark"}
         ],
         "volume": "145273","number": "508",
         "doi" : "https://doi.org/10.1016/j.electacta.2024.145273 (5.5)",
         
         "bibtexKey": "zierdteffect"

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         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/27b8187a050a27af5411c9fd3401c3f74/ipappwiedmann",         
         "tags" : [
            "Applications","Catalyst","Cell","Content","Diffusion","Effect","Electrodes","Fe-N-C-Based","Fuel","Gas","HT-PEM","Layers","Polytetrafluorethylene","for","in","of"
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         "intraHash" : "7b8187a050a27af5411c9fd3401c3f74",
         "interHash" : "8f59419cbb2c780d2b55954776d01ed2",
         "label" : "Effect of Polytetrafluorethylene Content in Fe-N-C-Based Catalyst Layers of Gas Diffusion Electrodes for HT-PEM Fuel Cell Applications",
         "user" : "ipappwiedmann",
         "description" : "",
         "date" : "2025-05-12 10:55:28",
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         "pub-type": "article",
         "journal": "ChemElectroChem",
         "year": "2024", 
         "url": "", 
         
         "author": [ 
            "T. Zierdt","J. Müller-Hülstede","H. Schmies","D. Schonvogel","P. Wagner","A. Friedrich","A. Friedrich"
         ],
         "authors": [
         	
            	{"first" : "T.",	"last" : "Zierdt"},
            	{"first" : "J.",	"last" : "Müller-Hülstede"},
            	{"first" : "H.",	"last" : "Schmies"},
            	{"first" : "D.",	"last" : "Schonvogel"},
            	{"first" : "P.",	"last" : "Wagner"},
            	{"first" : "A.",	"last" : "Friedrich"},
            	{"first" : "A.",	"last" : "Friedrich"}
         ],
         
         "doi" : "10.1002/celc.202300583 (4.782)",
         
         "bibtexKey": "noauthororeditor2024effect"

      }
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      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2814a11c613dac1fa00a69191b2755407/huebleriac",         
         "tags" : [
            "binuclear","bipyridinyl","bridged","catalyst","catalyst;zinc","hydrolysis","kinetics","mononuclear","nitrophenyl","phosphate","pyridinyl","tetraazacyclododecane","triazine","triazinyl","zinc"
         ],
         
         "intraHash" : "814a11c613dac1fa00a69191b2755407",
         "interHash" : "c9b68881f09a0534cb86b01dff71630a",
         "label" : "1,4,7,10-Tetraazacyclododecane metal complexes as potent promoters of phosphodiester hydrolysis under physiological conditions",
         "user" : "huebleriac",
         "description" : "",
         "date" : "2022-06-15 11:26:56",
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         "count" : 3,
         "pub-type": "article",
         "journal": "Inorganic Chemistry",
         "year": "2008", 
         "url": "", 
         
         "author": [ 
            "Michael Subat","Kristina Woinaroschy","Corinna Gerstl","Biprajit Sarkar","Wolfgang Kaim","Burkhard. Koenig"
         ],
         "authors": [
         	
            	{"first" : "Michael",	"last" : "Subat"},
            	{"first" : "Kristina",	"last" : "Woinaroschy"},
            	{"first" : "Corinna",	"last" : "Gerstl"},
            	{"first" : "Biprajit",	"last" : "Sarkar"},
            	{"first" : "Wolfgang",	"last" : "Kaim"},
            	{"first" : "Burkhard.",	"last" : "Koenig"}
         ],
         "volume": "47","number": "11","pages": "4661--4668","abstract": "Previously reported mono- and dinuclear Zn(II), Cu(II), and Ni(II) complexes of 1,4,7,10-tetrazacyclododecane ([12]aneN4 or cyclen) with different heterocyclic spacers (triazine, pyridine, 2,2'-bipyridine), optionally contg. pendant azacrown ether moiety, exhibit catalytic activity in hydrolysis of bis(4-nitrophenyl) phosphate (BNPP) in physiol. conditions (pH 7-9, 25°).  All Zn(II) complexes promote the hydrolysis of BNPP under physiol. conditions, while those of Cu(II) and Ni(II) do not have a significant effect on the hydrolysis reaction.  The hydrolysis rate consts. in buffered solns. (0.05 M Bis/Tris, TRIS, HEPES, or CHES, I = 0.1 M, NaCl) at 25° were detd. by the initial slope method at product conversion less than 5\\%.  Comparison of the second-order pH-independent rate consts. (kBNPP, M-1 s-1) for the zinc [12]aneN4 mononuclear complexes indicate that the pendant heterocyclic moiety, 4,6-dimethoxy-1,3,5-triazin-2-yl, 2-pyridinyl, 4-azacrown-6-methoxy-1,3,5-triazin-2-yl, improves the rate of hydrolysis up to six times over the parent Zn([12]aneN4) complex (kBNPP = 1.1 $\\times$ 10-5 M-1 s-1).  The reactive species is the Zn(II)-OH- complex, in which the Zn(II)-bound OH- acts as a nucleophile.  For zinc dinuclear complexes, in which the [12]aneN4 moieties are bridged by 1,3,5-triazin-2,4-diyl or 2,2'-bipyridine-6,6'-diyl spacers, the rate of reaction is defined by the degree of cooperation between the metal centers, which is detd. by the spacer length.  The complexes possessing shorter 1,3,5-triazin-2,4-diyl spacers are able to hydrolyze BNPP 1 to 2 orders of magnitudes faster than 2,2'-bipyridine-6,6'-diyl-bridged complex.  The high BNPP hydrolytic activity may be related to p-stacking and hydrophobic interactions between the arom. spacer moieties and the substrate.  The tested complexes show hydrolytic activity at pH 7 and 8, which allows for the hydrolysis of activated phosphate esters under physiol. conditions. [on SciFinder(R)]",
         "issn" : "0020-1669",
         
         "doi" : "10.1021/ic702413q",
         
         "bibtexKey": "Subat.2008"

      }
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      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2a70a1bb855cb75359687bbf56b636a5a/huebleriac",         
         "tags" : [
            "acidic","aerobic","alc","aliph","bipyridine","bipyrimidine","catalyst","catalyst;iridium","catalytic","complex","cycle","hydride","intermediate","iridium","mechanism","oxidn","oxidn;alc"
         ],
         
         "intraHash" : "a70a1bb855cb75359687bbf56b636a5a",
         "interHash" : "1d6d20436ecd0087f6639caccc4e5df1",
         "label" : "Acidic iridium hydrides: Implications for aerobic and Oppenauer oxidation of alcohols",
         "user" : "huebleriac",
         "description" : "",
         "date" : "2022-06-15 11:26:56",
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         "count" : 3,
         "pub-type": "article",
         "journal": "Chemical Communications (Cambridge, United Kingdom)",
         "year": "2006", 
         "url": "", 
         
         "author": [ 
            "Anders Gabrielsson","Piet van Leeuwen","Wolfgang. Kaim"
         ],
         "authors": [
         	
            	{"first" : "Anders",	"last" : "Gabrielsson"},
            	{"first" : "Piet",	"last" : "van Leeuwen"},
            	{"first" : "Wolfgang.",	"last" : "Kaim"}
         ],
         "number": "47","pages": "4926--4927","abstract": "[Cp*Ir(Cl)(bpym)]+ (bpym = 2,2'-bipyrimidine) and [Cp*Ir(Cl)(bpy)]+ are the 1st examples of Ir based catalysts for the aerobic oxidn. of alcs.  The mechanism for aerobic oxidn. of aliph. alcs. to aldehydes is discussed; the catalytic cycle proceeds via the acidic hydrides [Cp*Ir(H)(bpym)]+ or [Cp*Ir(H)(bpy)]+.  Deprotonation of the hydride leads to a highly oxygen-sensitive IrI species that regenerate the IrIII complexes upon oxidn. with dioxygen. [on SciFinder(R)]",
         "issn" : "1359-7345",
         
         "doi" : "10.1039/b610857a",
         
         "bibtexKey": "Gabrielsson.2006"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2727254f323a53ae10a95ea3109f3d8b0/huebleriac",         
         "tags" : [
            "DFT","aqua","benzoquinonediimine","calcn","catalyst","catalyst;ruthenium","chloro","complex","complex;olefin","crystal","electrochem","epoxidn","methanetrispyrazole","prepn","ruthenium","structure"
         ],
         
         "intraHash" : "727254f323a53ae10a95ea3109f3d8b0",
         "interHash" : "0985d2e9d0f121c64939bce49921d0f9",
         "label" : "Electronic structure and catalytic aspects of [Ru(tpm)(bqdi)(Cl/H2O)]n, tpm = tris(1-pyrazolyl)methane and bqdi = o-benzoquinonediimine",
         "user" : "huebleriac",
         "description" : "",
         "date" : "2022-06-15 11:26:56",
         "changeDate" : "2022-06-15 09:26:56",
         "count" : 3,
         "pub-type": "article",
         "journal": "Dalton Transactions",
         "year": "2013", 
         "url": "", 
         
         "author": [ 
            "Hemlata Agarwala","Fabian Ehret","Abhishek Dutta Chowdhury","Somnath Maji","Shaikh M. Mobin","Wolfgang Kaim","Goutam Kumar. Lahiri"
         ],
         "authors": [
         	
            	{"first" : "Hemlata",	"last" : "Agarwala"},
            	{"first" : "Fabian",	"last" : "Ehret"},
            	{"first" : "Abhishek Dutta",	"last" : "Chowdhury"},
            	{"first" : "Somnath",	"last" : "Maji"},
            	{"first" : "Shaikh M.",	"last" : "Mobin"},
            	{"first" : "Wolfgang",	"last" : "Kaim"},
            	{"first" : "Goutam Kumar.",	"last" : "Lahiri"}
         ],
         "volume": "42","number": "10","pages": "3721--3734","abstract": "Diamagnetic [Ru(tpm)(bqdi)(Cl)]ClO4 ([1]ClO4) (tpm = tris(1-pyrazolyl)methane, bqdi = o-benzoquinonediimine) and [Ru(tpm)(bqdi)(H2O)](ClO4)2 ([2](ClO4)2) were synthesized.  The valence state-sensitive bond distances of coordinated bqdi [C-N: 1.311(5)/1.322(5) \\AA in [1]ClO4; 1.316(7)/1.314(7) \\AA in mol. A and 1.315(6)/1.299(7) \\AA in mol. B of [2](ClO4)2] imply its fully oxidized quinonediimine (bqdi0) character.  DFT calcns. of 1+ confirm the RuII-bqdi0 vs. the antiferromagnetically coupled RuIII-bqdi√- alternative.  The 1H NMR spectra of [1]ClO4 in different solvents show variations in chem. shift positions of the NH (bqdi) and CH (tpm) proton resonances due to their different degrees of acidity in different solvents.  In CH3CN/0.1 mol dm-3 Et4NClO4, [1]ClO4 undergoes one reversible RuII .dblharw. RuIII oxidn. and two redns., the reversible first electron uptake being bqdi based (bqdi0/bqdi$\\surd$-).  The electrogenerated paramagnetic RuIII-bqdi0 (12+) and RuII-Q√- (1) exhibit RuIII-type (12+: \\textlessg\\textgreater = 2.211/Dg = 0.580) and radical-type (1: g = 1.988) EPR signals, resp., as is confirmed by calcd. spin densities (Ru: 0.767 in 12+, bqdi: 0.857 in 1).  The aqua complex [2](ClO4)2 exhibits two 1-electron oxidns. at pH = 7, suggesting the formation of RuIV:O species.  The electronic spectral features of 1n (n = charge assocd. with the different redox states of the chloro complex: 2+, 1+, 0) in CH3CN and of 22+ in H2O were interpreted based on the TD-DFT calcns.  The application potential of the aqua complex 22+ as a pre-catalyst towards the epoxidn. of olefins was explored in the presence of the sacrificial oxidant PhI(OAc)2 in CH2Cl2 at 298 K, showing the desired selectivity with a wide variety of alkenes.  DFT calcns. based on styrene as the model substrate predict that the epoxidn. reaction proceeds through a concerted transition state pathway. [on SciFinder(R)]",
         "issn" : "1477-9226",
         
         "doi" : "10.1039/c2dt32402d",
         
         "bibtexKey": "Agarwala.2013"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2138ccd4a970b8d94a6af3ebcec5160d7/huebleriac",         
         "tags" : [
            "catalyst","cobalt","complex","hydroformylation","octene"
         ],
         
         "intraHash" : "138ccd4a970b8d94a6af3ebcec5160d7",
         "interHash" : "dcb743237c594ba5b8d556a51f65ef14",
         "label" : "Hydroformylation of 1-Octene Mediated by the Cobalt Complex [CoH(dchpf)(CO)2]",
         "user" : "huebleriac",
         "description" : "",
         "date" : "2022-06-15 11:26:56",
         "changeDate" : "2022-06-15 09:26:56",
         "count" : 4,
         "pub-type": "article",
         "journal": "Topics in Catalysis",
         "year": "2016", 
         "url": "", 
         
         "author": [ 
            "Alexander M. Kluwer","Michael J. Krafft","Ingo Hartenbach","Bas de Bruin","Wolfgang. Kaim"
         ],
         "authors": [
         	
            	{"first" : "Alexander M.",	"last" : "Kluwer"},
            	{"first" : "Michael J.",	"last" : "Krafft"},
            	{"first" : "Ingo",	"last" : "Hartenbach"},
            	{"first" : "Bas",	"last" : "de Bruin"},
            	{"first" : "Wolfgang.",	"last" : "Kaim"}
         ],
         "volume": "59","number": "19-20","pages": "1787--1792","abstract": "Hydroformylation of 1-octene with the heterodinuclear (Fe, Co) complex [CoH(dchpf)(CO)2] was studied (dchpf = 1,1'-bis(dicyclohexylphosphino)ferrocene).  In agreement with this cobalt complex possessing a preformed hydride as well as carbonyl ligands, the pre-activated catalyst does not require any induction process or activation treatment to become reactive in hydroformylation.  The catalyst activity and (chemo-)selectivity proved to be strongly dependent on the applied reaction conditions.  Higher syngas pressures suppress alkene isomerization and favor the hydroformylation reaction.  The overall regio-selectivity remains very similar within the studied reaction space, with the C1-selectivity varying between 48 and 69\\%.  An increase of the reaction temp. at 40 bars results in a progressive decrease of the C1-selectivity and an increase in the C2- and C3-selectivity due to a higher isomerization activity at elevated temps.  Furthermore, at high temps. (170°) and low syngas pressures (10-20 bar) the main oxygenated products are the alcs., resulting from redn. of the aldehydes.  However, when using a combination of higher syngas pressures and intermediate temps., the reaction could be optimized towards the formation of aldehydes.  At 140° and 40 bars syngas pressure quite selective hydroformylation of 1-octene could be achieved, yielding 57\\% aldehydes and only 1.3\\% over-redn. to the corresponding alc. [on SciFinder(R)]",
         "issn" : "1022-5528",
         
         "doi" : "10.1007/s11244-016-0699-3",
         
         "bibtexKey": "Kluwer.2016"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2d23a1015226545d29e767008d4cfef56/huebleriac",         
         "tags" : [
            "catalyst","nickel","olefin","polymn"
         ],
         
         "intraHash" : "d23a1015226545d29e767008d4cfef56",
         "interHash" : "df1c2b23908a504007b0a56249c02953",
         "label" : "Oligomerization and polymerization of olefins on homogeneous and heterogeneous nickel catalysts",
         "user" : "huebleriac",
         "description" : "",
         "date" : "2022-06-15 11:26:56",
         "changeDate" : "2022-06-15 09:26:56",
         "count" : 3,
         "pub-type": "article",
         
         "year": "1986", 
         "url": "", 
         
         "author": [ 
            "W. Kaim"
         ],
         "authors": [
         	
            	{"first" : "W.",	"last" : "Kaim"}
         ],
         "volume": "2","number": "Ch 1","pages": "171--181","abstract": "Title only translated. [on SciFinder(R)]",
         "bibtexKey": "Kaim.1986"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/243f626a674c98ec366f11918205dd032/huebleriac",         
         "tags" : [
            "catalyst","complex","metathesis","opening","polymn","polynorbornene","ring","ruthenium"
         ],
         
         "intraHash" : "43f626a674c98ec366f11918205dd032",
         "interHash" : "2bc5d36fc1b8a5e25497b67f39594724",
         "label" : "Ruthenium(IV)-Bis(methallyl) Complexes as UV-Latent Initiators for Ring-Opening Metathesis Polymerization",
         "user" : "huebleriac",
         "description" : "",
         "date" : "2022-06-15 11:26:56",
         "changeDate" : "2022-06-15 09:26:56",
         "count" : 4,
         "pub-type": "article",
         "journal": "ChemCatChem",
         "year": "2012", 
         "url": "", 
         
         "author": [ 
            "Dongren Wang","Joerg Unold","Martina Bubrin","Wolfgang Frey","Wolfgang Kaim","Michael R. Buchmeiser"
         ],
         "authors": [
         	
            	{"first" : "Dongren",	"last" : "Wang"},
            	{"first" : "Joerg",	"last" : "Unold"},
            	{"first" : "Martina",	"last" : "Bubrin"},
            	{"first" : "Wolfgang",	"last" : "Frey"},
            	{"first" : "Wolfgang",	"last" : "Kaim"},
            	{"first" : "Michael R.",	"last" : "Buchmeiser"}
         ],
         "volume": "4","number": "11","pages": "1808-1812, S1808/1-S1808/51","abstract": "The RuIV-based transition metal catalysts [Ru(h3:h3-C10H16)Cl2(PPh3)] (1), [Ru(h3:h3-C10H16)Cl2(PCy3)] (2), and [Ru(h3:h3-C10H16)(CF3COO)2(PPh3)] (3) have been synthesized and investigated for their use as initiators in the thermally and photo-initiated ring-opening metathesis polymn. (photo-ROMP) of norborn-2-ene (NBE).  Compds. 1 and 3 display significant photo-ROMP activity with NBE whereas compd. 2, although active in the ROMP of NBE, shows virtually no latency at all.  The results are discussed with respect to the structural features of the novel catalysts. [on SciFinder(R)]",
         "issn" : "1867-3880",
         
         "doi" : "10.1002/cctc.201200183",
         
         "bibtexKey": "Wang.2012"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2e7360ef339fe90b319c5d6d3e26505a7/huebleriac",         
         "tags" : [
            "MO","bidiazine","bidiazinerhodium;rhodium","catalyst","electrochem","extn","hydrogen","isomer","redox","water"
         ],
         
         "intraHash" : "e7360ef339fe90b319c5d6d3e26505a7",
         "interHash" : "081b27b5376b1c39cf14460e67cbeed1",
         "label" : "Spectroscopic and electrochemical properties of the isomeric bidiazine complexes [(C5Me5)ClRh(bdz)]+ and (C5Me5)Rh(bdz) and their relevance to the catalysis of the 2 H+ $\\rightarrow$ H2 reaction by 2,2'-bipyridine analogs",
         "user" : "huebleriac",
         "description" : "",
         "date" : "2022-06-15 11:26:56",
         "changeDate" : "2022-06-15 09:26:56",
         "count" : 3,
         "pub-type": "article",
         "journal": "Journal of Organometallic Chemistry",
         "year": "1991", 
         "url": "", 
         
         "author": [ 
            "Monika Ladwig","Wolfgang. Kaim"
         ],
         "authors": [
         	
            	{"first" : "Monika",	"last" : "Ladwig"},
            	{"first" : "Wolfgang.",	"last" : "Kaim"}
         ],
         "volume": "419","number": "1-2","pages": "233--243","abstract": "Electronic structures and ligand effects were studied for the isomeric Rh(III/I) complexes [(C5Me5)ClRh(bdz)](X) (X- = Cl-, PF6-; bdz = 3,3'-bipyridazine, 2,2'-bipyrazine, 2,2'- and 4,4'-bipyrimidine) and (C5Me5)Rh(bdz).  Comparative NMR and UV-visible spectroscopic and cyclic-voltammetry measurements in aprotic solvents allowed definition of a frontier-MO situation that was correlated with the reactivity of the [(C5Me5)ClRh(bpy)]+ system as a catalyst for H evolution from H2O.  Thus, while the potential for the 2-electron redn. of the Rh(III) halide precursor depends on the ligand basicity, the MO description shows that there is extremely strong p-back donation and orbital mixing between the d orbitals of the H+-accepting (C5Me5)Rh(I) fragment and the acceptor level of the heterocyclic ligand. [on SciFinder(R)]",
         "doi" : "10.1016/0022-328X(91)86178-S",
         
         "bibtexKey": "Ladwig.1991"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/26f537615479a34e54e6be3d9fe678bda/huebleriac",         
         "tags" : [
            "carbene","carbene;ruthenium","catalyst","complex","complex;mol","complex;polymn","crystal","metathesis","opening","photocatalyst","photochem","prepn","ring","ruthenium","structure","triazene"
         ],
         
         "intraHash" : "6f537615479a34e54e6be3d9fe678bda",
         "interHash" : "1b4b008cb80b6da302fac44caec3edfa",
         "label" : "Ruthenium-triazene complexes as latent catalysts for UV-induced ROMP",
         "user" : "huebleriac",
         "description" : "",
         "date" : "2022-06-15 11:26:56",
         "changeDate" : "2022-06-15 09:26:56",
         "count" : 4,
         "pub-type": "article",
         "journal": "European Journal of Inorganic Chemistry",
         "year": "2013", 
         "url": "", 
         
         "author": [ 
            "Dongren Wang","Joerg Unold","Martina Bubrin","Iris Elser","Wolfgang Frey","Wolfgang Kaim","Guangjuan Xu","Michael R. Buchmeiser"
         ],
         "authors": [
         	
            	{"first" : "Dongren",	"last" : "Wang"},
            	{"first" : "Joerg",	"last" : "Unold"},
            	{"first" : "Martina",	"last" : "Bubrin"},
            	{"first" : "Iris",	"last" : "Elser"},
            	{"first" : "Wolfgang",	"last" : "Frey"},
            	{"first" : "Wolfgang",	"last" : "Kaim"},
            	{"first" : "Guangjuan",	"last" : "Xu"},
            	{"first" : "Michael R.",	"last" : "Buchmeiser"}
         ],
         "volume": "2013","number": "31","pages": "5462--5468","abstract": "Three novel ruthenium(II) complexes, Grubbs' catalyst analogs, bearing triazene group, [RuX2(IMesH2)N,N-diethyl-N'-(2-benzylidene)triazene] (IMesH2 = 1,3-dimesitylimidazolin-2-ylidene; 2-4; X = Cl, CF3CO2, C6F5CO2) are prepd. and tested as photo-induced ring-opening metathetic polymn. of cycloalkenes.  Single-crystal x-ray structure anal. of compds. 2-4 revealed that the triazene ligand exists in the trans form and that the aryl-connected nitrogen atom of the triazene binds to the ruthenium atom to form a five-membered chelate ring.  Compds. 2-4 were applied to the UV-induced ring-opening metathesis polymn. (ROMP) of cis-cyclooctene (5) and dicyclopentadiene (6).  Whereas all three precatalysts show pronounced thermal latency in the presence of 5 or 6, only compd. 2 displays significant photo-ROMP activity.  The photoreactivity of precatalysts 2-4, which decreases with increasing electron-withdrawing character and with decreasing pKa of the X groups, is discussed and correlated with the x-ray data of 2-4, with low-temp. 1H NMR measurements as well as with cyclovoltammetric measurements. [on SciFinder(R)]",
         "issn" : "1434-1948",
         
         "doi" : "10.1002/ejic.201301048",
         
         "bibtexKey": "Wang.2013"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/26f537615479a34e54e6be3d9fe678bda/b_schwederski",         
         "tags" : [
            "carbene","carbene;ruthenium","catalyst","complex","complex;mol","complex;polymn","crystal","metathesis","opening","photocatalyst","photochem","prepn","ring","ruthenium","structure","triazene"
         ],
         
         "intraHash" : "6f537615479a34e54e6be3d9fe678bda",
         "interHash" : "1b4b008cb80b6da302fac44caec3edfa",
         "label" : "Ruthenium-triazene complexes as latent catalysts for UV-induced ROMP",
         "user" : "b_schwederski",
         "description" : "",
         "date" : "2019-07-15 13:41:23",
         "changeDate" : "2019-07-15 11:42:10",
         "count" : 4,
         "pub-type": "article",
         "journal": "European Journal of Inorganic Chemistry",
         "year": "2013", 
         "url": "", 
         
         "author": [ 
            "Dongren Wang","Joerg Unold","Martina Bubrin","Iris Elser","Wolfgang Frey","Wolfgang Kaim","Guangjuan Xu","Michael R. Buchmeiser"
         ],
         "authors": [
         	
            	{"first" : "Dongren",	"last" : "Wang"},
            	{"first" : "Joerg",	"last" : "Unold"},
            	{"first" : "Martina",	"last" : "Bubrin"},
            	{"first" : "Iris",	"last" : "Elser"},
            	{"first" : "Wolfgang",	"last" : "Frey"},
            	{"first" : "Wolfgang",	"last" : "Kaim"},
            	{"first" : "Guangjuan",	"last" : "Xu"},
            	{"first" : "Michael R.",	"last" : "Buchmeiser"}
         ],
         "volume": "2013","number": "31","pages": "5462--5468","abstract": "Three novel ruthenium(II) complexes, Grubbs' catalyst analogs, bearing triazene group, [RuX2(IMesH2)N,N-diethyl-N'-(2-benzylidene)triazene] (IMesH2 = 1,3-dimesitylimidazolin-2-ylidene; 2-4; X = Cl, CF3CO2, C6F5CO2) are prepd. and tested as photo-induced ring-opening metathetic polymn. of cycloalkenes.  Single-crystal x-ray structure anal. of compds. 2-4 revealed that the triazene ligand exists in the trans form and that the aryl-connected nitrogen atom of the triazene binds to the ruthenium atom to form a five-membered chelate ring.  Compds. 2-4 were applied to the UV-induced ring-opening metathesis polymn. (ROMP) of cis-cyclooctene (5) and dicyclopentadiene (6).  Whereas all three precatalysts show pronounced thermal latency in the presence of 5 or 6, only compd. 2 displays significant photo-ROMP activity.  The photoreactivity of precatalysts 2-4, which decreases with increasing electron-withdrawing character and with decreasing pKa of the X groups, is discussed and correlated with the x-ray data of 2-4, with low-temp. 1H NMR measurements as well as with cyclovoltammetric measurements. [on SciFinder(R)]",
         "issn" : "1434-1948",
         
         "doi" : "10.1002/ejic.201301048",
         
         "bibtexKey": "Wang.2013"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2e7360ef339fe90b319c5d6d3e26505a7/b_schwederski",         
         "tags" : [
            "MO","bidiazine","bidiazinerhodium;rhodium","catalyst","electrochem","extn","hydrogen","isomer","redox","water"
         ],
         
         "intraHash" : "e7360ef339fe90b319c5d6d3e26505a7",
         "interHash" : "081b27b5376b1c39cf14460e67cbeed1",
         "label" : "Spectroscopic and electrochemical properties of the isomeric bidiazine complexes [(C5Me5)ClRh(bdz)]+ and (C5Me5)Rh(bdz) and their relevance to the catalysis of the 2 H+ $\\rightarrow$ H2 reaction by 2,2'-bipyridine analogs",
         "user" : "b_schwederski",
         "description" : "",
         "date" : "2019-07-15 13:41:23",
         "changeDate" : "2019-07-15 11:42:10",
         "count" : 3,
         "pub-type": "article",
         "journal": "Journal of Organometallic Chemistry",
         "year": "1991", 
         "url": "", 
         
         "author": [ 
            "Monika Ladwig","Wolfgang. Kaim"
         ],
         "authors": [
         	
            	{"first" : "Monika",	"last" : "Ladwig"},
            	{"first" : "Wolfgang.",	"last" : "Kaim"}
         ],
         "volume": "419","number": "1-2","pages": "233--243","abstract": "Electronic structures and ligand effects were studied for the isomeric Rh(III/I) complexes [(C5Me5)ClRh(bdz)](X) (X- = Cl-, PF6-; bdz = 3,3'-bipyridazine, 2,2'-bipyrazine, 2,2'- and 4,4'-bipyrimidine) and (C5Me5)Rh(bdz).  Comparative NMR and UV-visible spectroscopic and cyclic-voltammetry measurements in aprotic solvents allowed definition of a frontier-MO situation that was correlated with the reactivity of the [(C5Me5)ClRh(bpy)]+ system as a catalyst for H evolution from H2O.  Thus, while the potential for the 2-electron redn. of the Rh(III) halide precursor depends on the ligand basicity, the MO description shows that there is extremely strong p-back donation and orbital mixing between the d orbitals of the H+-accepting (C5Me5)Rh(I) fragment and the acceptor level of the heterocyclic ligand. [on SciFinder(R)]",
         "doi" : "10.1016/0022-328X(91)86178-S",
         
         "bibtexKey": "Ladwig.1991"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/243f626a674c98ec366f11918205dd032/b_schwederski",         
         "tags" : [
            "catalyst","complex","metathesis","opening","polymn","polynorbornene","ring","ruthenium"
         ],
         
         "intraHash" : "43f626a674c98ec366f11918205dd032",
         "interHash" : "2bc5d36fc1b8a5e25497b67f39594724",
         "label" : "Ruthenium(IV)-Bis(methallyl) Complexes as UV-Latent Initiators for Ring-Opening Metathesis Polymerization",
         "user" : "b_schwederski",
         "description" : "",
         "date" : "2019-07-15 13:41:23",
         "changeDate" : "2019-07-15 11:42:10",
         "count" : 4,
         "pub-type": "article",
         "journal": "ChemCatChem",
         "year": "2012", 
         "url": "", 
         
         "author": [ 
            "Dongren Wang","Joerg Unold","Martina Bubrin","Wolfgang Frey","Wolfgang Kaim","Michael R. Buchmeiser"
         ],
         "authors": [
         	
            	{"first" : "Dongren",	"last" : "Wang"},
            	{"first" : "Joerg",	"last" : "Unold"},
            	{"first" : "Martina",	"last" : "Bubrin"},
            	{"first" : "Wolfgang",	"last" : "Frey"},
            	{"first" : "Wolfgang",	"last" : "Kaim"},
            	{"first" : "Michael R.",	"last" : "Buchmeiser"}
         ],
         "volume": "4","number": "11","pages": "1808-1812, S1808/1-S1808/51","abstract": "The RuIV-based transition metal catalysts [Ru(h3:h3-C10H16)Cl2(PPh3)] (1), [Ru(h3:h3-C10H16)Cl2(PCy3)] (2), and [Ru(h3:h3-C10H16)(CF3COO)2(PPh3)] (3) have been synthesized and investigated for their use as initiators in the thermally and photo-initiated ring-opening metathesis polymn. (photo-ROMP) of norborn-2-ene (NBE).  Compds. 1 and 3 display significant photo-ROMP activity with NBE whereas compd. 2, although active in the ROMP of NBE, shows virtually no latency at all.  The results are discussed with respect to the structural features of the novel catalysts. [on SciFinder(R)]",
         "issn" : "1867-3880",
         
         "doi" : "10.1002/cctc.201200183",
         
         "bibtexKey": "Wang.2012"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2d23a1015226545d29e767008d4cfef56/b_schwederski",         
         "tags" : [
            "catalyst","nickel","olefin","polymn"
         ],
         
         "intraHash" : "d23a1015226545d29e767008d4cfef56",
         "interHash" : "df1c2b23908a504007b0a56249c02953",
         "label" : "Oligomerization and polymerization of olefins on homogeneous and heterogeneous nickel catalysts",
         "user" : "b_schwederski",
         "description" : "",
         "date" : "2019-07-15 13:41:23",
         "changeDate" : "2019-07-15 11:42:10",
         "count" : 3,
         "pub-type": "article",
         
         "year": "1986", 
         "url": "", 
         
         "author": [ 
            "W. Kaim"
         ],
         "authors": [
         	
            	{"first" : "W.",	"last" : "Kaim"}
         ],
         "volume": "2","number": "Ch 1","pages": "171--181","abstract": "Title only translated. [on SciFinder(R)]",
         "bibtexKey": "Kaim.1986"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2138ccd4a970b8d94a6af3ebcec5160d7/b_schwederski",         
         "tags" : [
            "catalyst","cobalt","complex","hydroformylation","octene"
         ],
         
         "intraHash" : "138ccd4a970b8d94a6af3ebcec5160d7",
         "interHash" : "dcb743237c594ba5b8d556a51f65ef14",
         "label" : "Hydroformylation of 1-Octene Mediated by the Cobalt Complex [CoH(dchpf)(CO)2]",
         "user" : "b_schwederski",
         "description" : "",
         "date" : "2019-07-15 13:41:23",
         "changeDate" : "2019-07-15 11:42:10",
         "count" : 4,
         "pub-type": "article",
         "journal": "Topics in Catalysis",
         "year": "2016", 
         "url": "", 
         
         "author": [ 
            "Alexander M. Kluwer","Michael J. Krafft","Ingo Hartenbach","Bas de Bruin","Wolfgang. Kaim"
         ],
         "authors": [
         	
            	{"first" : "Alexander M.",	"last" : "Kluwer"},
            	{"first" : "Michael J.",	"last" : "Krafft"},
            	{"first" : "Ingo",	"last" : "Hartenbach"},
            	{"first" : "Bas",	"last" : "de Bruin"},
            	{"first" : "Wolfgang.",	"last" : "Kaim"}
         ],
         "volume": "59","number": "19-20","pages": "1787--1792","abstract": "Hydroformylation of 1-octene with the heterodinuclear (Fe, Co) complex [CoH(dchpf)(CO)2] was studied (dchpf = 1,1'-bis(dicyclohexylphosphino)ferrocene).  In agreement with this cobalt complex possessing a preformed hydride as well as carbonyl ligands, the pre-activated catalyst does not require any induction process or activation treatment to become reactive in hydroformylation.  The catalyst activity and (chemo-)selectivity proved to be strongly dependent on the applied reaction conditions.  Higher syngas pressures suppress alkene isomerization and favor the hydroformylation reaction.  The overall regio-selectivity remains very similar within the studied reaction space, with the C1-selectivity varying between 48 and 69\\%.  An increase of the reaction temp. at 40 bars results in a progressive decrease of the C1-selectivity and an increase in the C2- and C3-selectivity due to a higher isomerization activity at elevated temps.  Furthermore, at high temps. (170°) and low syngas pressures (10-20 bar) the main oxygenated products are the alcs., resulting from redn. of the aldehydes.  However, when using a combination of higher syngas pressures and intermediate temps., the reaction could be optimized towards the formation of aldehydes.  At 140° and 40 bars syngas pressure quite selective hydroformylation of 1-octene could be achieved, yielding 57\\% aldehydes and only 1.3\\% over-redn. to the corresponding alc. [on SciFinder(R)]",
         "issn" : "1022-5528",
         
         "doi" : "10.1007/s11244-016-0699-3",
         
         "bibtexKey": "Kluwer.2016"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2727254f323a53ae10a95ea3109f3d8b0/b_schwederski",         
         "tags" : [
            "DFT","aqua","benzoquinonediimine","calcn","catalyst","catalyst;ruthenium","chloro","complex","complex;olefin","crystal","electrochem","epoxidn","methanetrispyrazole","prepn","ruthenium","structure"
         ],
         
         "intraHash" : "727254f323a53ae10a95ea3109f3d8b0",
         "interHash" : "0985d2e9d0f121c64939bce49921d0f9",
         "label" : "Electronic structure and catalytic aspects of [Ru(tpm)(bqdi)(Cl/H2O)]n, tpm = tris(1-pyrazolyl)methane and bqdi = o-benzoquinonediimine",
         "user" : "b_schwederski",
         "description" : "",
         "date" : "2019-07-15 13:41:23",
         "changeDate" : "2019-07-15 11:42:10",
         "count" : 3,
         "pub-type": "article",
         "journal": "Dalton Transactions",
         "year": "2013", 
         "url": "", 
         
         "author": [ 
            "Hemlata Agarwala","Fabian Ehret","Abhishek Dutta Chowdhury","Somnath Maji","Shaikh M. Mobin","Wolfgang Kaim","Goutam Kumar. Lahiri"
         ],
         "authors": [
         	
            	{"first" : "Hemlata",	"last" : "Agarwala"},
            	{"first" : "Fabian",	"last" : "Ehret"},
            	{"first" : "Abhishek Dutta",	"last" : "Chowdhury"},
            	{"first" : "Somnath",	"last" : "Maji"},
            	{"first" : "Shaikh M.",	"last" : "Mobin"},
            	{"first" : "Wolfgang",	"last" : "Kaim"},
            	{"first" : "Goutam Kumar.",	"last" : "Lahiri"}
         ],
         "volume": "42","number": "10","pages": "3721--3734","abstract": "Diamagnetic [Ru(tpm)(bqdi)(Cl)]ClO4 ([1]ClO4) (tpm = tris(1-pyrazolyl)methane, bqdi = o-benzoquinonediimine) and [Ru(tpm)(bqdi)(H2O)](ClO4)2 ([2](ClO4)2) were synthesized.  The valence state-sensitive bond distances of coordinated bqdi [C-N: 1.311(5)/1.322(5) \\AA in [1]ClO4; 1.316(7)/1.314(7) \\AA in mol. A and 1.315(6)/1.299(7) \\AA in mol. B of [2](ClO4)2] imply its fully oxidized quinonediimine (bqdi0) character.  DFT calcns. of 1+ confirm the RuII-bqdi0 vs. the antiferromagnetically coupled RuIII-bqdi√- alternative.  The 1H NMR spectra of [1]ClO4 in different solvents show variations in chem. shift positions of the NH (bqdi) and CH (tpm) proton resonances due to their different degrees of acidity in different solvents.  In CH3CN/0.1 mol dm-3 Et4NClO4, [1]ClO4 undergoes one reversible RuII .dblharw. RuIII oxidn. and two redns., the reversible first electron uptake being bqdi based (bqdi0/bqdi$\\surd$-).  The electrogenerated paramagnetic RuIII-bqdi0 (12+) and RuII-Q√- (1) exhibit RuIII-type (12+: \\textlessg\\textgreater = 2.211/Dg = 0.580) and radical-type (1: g = 1.988) EPR signals, resp., as is confirmed by calcd. spin densities (Ru: 0.767 in 12+, bqdi: 0.857 in 1).  The aqua complex [2](ClO4)2 exhibits two 1-electron oxidns. at pH = 7, suggesting the formation of RuIV:O species.  The electronic spectral features of 1n (n = charge assocd. with the different redox states of the chloro complex: 2+, 1+, 0) in CH3CN and of 22+ in H2O were interpreted based on the TD-DFT calcns.  The application potential of the aqua complex 22+ as a pre-catalyst towards the epoxidn. of olefins was explored in the presence of the sacrificial oxidant PhI(OAc)2 in CH2Cl2 at 298 K, showing the desired selectivity with a wide variety of alkenes.  DFT calcns. based on styrene as the model substrate predict that the epoxidn. reaction proceeds through a concerted transition state pathway. [on SciFinder(R)]",
         "issn" : "1477-9226",
         
         "doi" : "10.1039/c2dt32402d",
         
         "bibtexKey": "Agarwala.2013"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2a70a1bb855cb75359687bbf56b636a5a/b_schwederski",         
         "tags" : [
            "acidic","aerobic","alc","aliph","bipyridine","bipyrimidine","catalyst","catalyst;iridium","catalytic","complex","cycle","hydride","intermediate","iridium","mechanism","oxidn","oxidn;alc"
         ],
         
         "intraHash" : "a70a1bb855cb75359687bbf56b636a5a",
         "interHash" : "1d6d20436ecd0087f6639caccc4e5df1",
         "label" : "Acidic iridium hydrides: Implications for aerobic and Oppenauer oxidation of alcohols",
         "user" : "b_schwederski",
         "description" : "",
         "date" : "2019-07-15 13:41:23",
         "changeDate" : "2019-07-15 11:42:10",
         "count" : 3,
         "pub-type": "article",
         "journal": "Chemical Communications (Cambridge, United Kingdom)",
         "year": "2006", 
         "url": "", 
         
         "author": [ 
            "Anders Gabrielsson","Piet van Leeuwen","Wolfgang. Kaim"
         ],
         "authors": [
         	
            	{"first" : "Anders",	"last" : "Gabrielsson"},
            	{"first" : "Piet",	"last" : "van Leeuwen"},
            	{"first" : "Wolfgang.",	"last" : "Kaim"}
         ],
         "number": "47","pages": "4926--4927","abstract": "[Cp*Ir(Cl)(bpym)]+ (bpym = 2,2'-bipyrimidine) and [Cp*Ir(Cl)(bpy)]+ are the 1st examples of Ir based catalysts for the aerobic oxidn. of alcs.  The mechanism for aerobic oxidn. of aliph. alcs. to aldehydes is discussed; the catalytic cycle proceeds via the acidic hydrides [Cp*Ir(H)(bpym)]+ or [Cp*Ir(H)(bpy)]+.  Deprotonation of the hydride leads to a highly oxygen-sensitive IrI species that regenerate the IrIII complexes upon oxidn. with dioxygen. [on SciFinder(R)]",
         "issn" : "1359-7345",
         
         "doi" : "10.1039/b610857a",
         
         "bibtexKey": "Gabrielsson.2006"

      }
,
      {
         "type" : "Publication",
         "id"   : "https://puma.ub.uni-stuttgart.de/bibtex/2814a11c613dac1fa00a69191b2755407/b_schwederski",         
         "tags" : [
            "binuclear","bipyridinyl","bridged","catalyst","catalyst;zinc","hydrolysis","kinetics","mononuclear","nitrophenyl","phosphate","pyridinyl","tetraazacyclododecane","triazine","triazinyl","zinc"
         ],
         
         "intraHash" : "814a11c613dac1fa00a69191b2755407",
         "interHash" : "c9b68881f09a0534cb86b01dff71630a",
         "label" : "1,4,7,10-Tetraazacyclododecane metal complexes as potent promoters of phosphodiester hydrolysis under physiological conditions",
         "user" : "b_schwederski",
         "description" : "",
         "date" : "2019-07-15 13:41:23",
         "changeDate" : "2019-07-15 11:42:10",
         "count" : 3,
         "pub-type": "article",
         "journal": "Inorganic Chemistry",
         "year": "2008", 
         "url": "", 
         
         "author": [ 
            "Michael Subat","Kristina Woinaroschy","Corinna Gerstl","Biprajit Sarkar","Wolfgang Kaim","Burkhard. Koenig"
         ],
         "authors": [
         	
            	{"first" : "Michael",	"last" : "Subat"},
            	{"first" : "Kristina",	"last" : "Woinaroschy"},
            	{"first" : "Corinna",	"last" : "Gerstl"},
            	{"first" : "Biprajit",	"last" : "Sarkar"},
            	{"first" : "Wolfgang",	"last" : "Kaim"},
            	{"first" : "Burkhard.",	"last" : "Koenig"}
         ],
         "volume": "47","number": "11","pages": "4661--4668","abstract": "Previously reported mono- and dinuclear Zn(II), Cu(II), and Ni(II) complexes of 1,4,7,10-tetrazacyclododecane ([12]aneN4 or cyclen) with different heterocyclic spacers (triazine, pyridine, 2,2'-bipyridine), optionally contg. pendant azacrown ether moiety, exhibit catalytic activity in hydrolysis of bis(4-nitrophenyl) phosphate (BNPP) in physiol. conditions (pH 7-9, 25°).  All Zn(II) complexes promote the hydrolysis of BNPP under physiol. conditions, while those of Cu(II) and Ni(II) do not have a significant effect on the hydrolysis reaction.  The hydrolysis rate consts. in buffered solns. (0.05 M Bis/Tris, TRIS, HEPES, or CHES, I = 0.1 M, NaCl) at 25° were detd. by the initial slope method at product conversion less than 5\\%.  Comparison of the second-order pH-independent rate consts. (kBNPP, M-1 s-1) for the zinc [12]aneN4 mononuclear complexes indicate that the pendant heterocyclic moiety, 4,6-dimethoxy-1,3,5-triazin-2-yl, 2-pyridinyl, 4-azacrown-6-methoxy-1,3,5-triazin-2-yl, improves the rate of hydrolysis up to six times over the parent Zn([12]aneN4) complex (kBNPP = 1.1 $\\times$ 10-5 M-1 s-1).  The reactive species is the Zn(II)-OH- complex, in which the Zn(II)-bound OH- acts as a nucleophile.  For zinc dinuclear complexes, in which the [12]aneN4 moieties are bridged by 1,3,5-triazin-2,4-diyl or 2,2'-bipyridine-6,6'-diyl spacers, the rate of reaction is defined by the degree of cooperation between the metal centers, which is detd. by the spacer length.  The complexes possessing shorter 1,3,5-triazin-2,4-diyl spacers are able to hydrolyze BNPP 1 to 2 orders of magnitudes faster than 2,2'-bipyridine-6,6'-diyl-bridged complex.  The high BNPP hydrolytic activity may be related to p-stacking and hydrophobic interactions between the arom. spacer moieties and the substrate.  The tested complexes show hydrolytic activity at pH 7 and 8, which allows for the hydrolysis of activated phosphate esters under physiol. conditions. [on SciFinder(R)]",
         "issn" : "0020-1669",
         
         "doi" : "10.1021/ic702413q",
         
         "bibtexKey": "Subat.2008"

      }
	  
   ]
}