Publications

Mark R. Ringenberg, Max Schwilk, Florian Wittkamp, Ulf-Peter Apfel, and Wolfgang. Kaim. Organometallic Fe-Fe Interactions: Beyond Common Metal-Metal Bonds and Inverse Mixed-Valent Charge Transfer. Chemistry - A European Journal, (23)8:1770--1774, 2017. [PUMA: bond calcn;mol carbonyl charge complex crystal ferrocenyl iron mol optimized prepn;mixed redox spectroelectrochem structure transfer valent]

Michael Ketterle, Wolfgang Kaim, and Jan. Fiedler. Valence delocalization in a strongly coupled (Kc = 1014) molecule-bridged cyanodiiron(III,II) species. Chemical Communications (Cambridge, United Kingdom), 16:1701--1702, 1998. [PUMA: bridged bridged;iron bridged;valence comproportionation const cyano delocalization dinuclear iron prepn;mixed pyrimidyltetrazine valent]

Markus Glockle, and Wolfgang. Kaim. An exceedingly stable diiron(II,III) complex ion (tz)Fe(CN)525- with comproportionation constants between 108 (in H2O) and 1019 (in CH3CN). Angewandte Chemie, International Edition, (38)20:3072--3074, 1999. [PUMA: bridged comproportionation decacyano diiron iron pentacyano prepn stability;iron stability;tetrazine tetrazine valence valence;mixed valent]

Sascha Berger, Axel Klein, Matthias Wanner, Wolfgang Kaim, and Jan. Fiedler. Electron Paramagnetic Resonance and Spectroscopic Characteristics of Electrogenerated Mixed-Valent Systems (h5-C5Me5)M(m-L)M(h5-C5Me5)+ (M = Rh, Ir; L = 2,5-Diiminopyrazines) in Relation to the Radicals (h5-C5Me5)ClM(m-L)MCl(h5-C5Me5)+ and (h5-C5Me5)M(m-L)MCl(h5-C5Me5)2+. Inorganic Chemistry, (39)12:2516--2521, 2000. [PUMA: bpip bxip chloro cyclopentadienyl diiminopyrazine electrochem iridium mixed pentamethylcyclopentadienyl pentamethylcyclopentadienyl;iminoethyl prepn pyrazine redn redn;ESR rhodium valent]

Srikanta Patra, Biprajit Sarkar, Sandeep Ghumaan, Jan Fiedler, Wolfgang Kaim, and Goutam Kumar. Lahiri. Isovalent and Mixed-Valent Diruthenium Complexes (acac)2RuII(m-bpytz)RuII(acac)2 and (acac)2RuII(m-bpytz)RuIII(acac)2(ClO4) (acac = Acetylacetonate and bpytz = 3,6-Bis(3,5-dimethylpyrazolyl)-1,2,4,5-tetrazine): Synthesis, Spectroelectrochemical, and EPR Investigation. Inorganic Chemistry, (43)19:6108--6113, 2004. [PUMA: ESR;ruthenium acetylacetonate comproportionation crystal electrochem prepn pyrazolyltetrazine pyrazolyltetrazine;mixed ruthenium spectroelectrochem structure valent]

Hemlata Agarwala, Thomas Michael Scherer, Somnath Maji, Tapan Kumar Mondal, Shaikh M. Mobin, Jan Fiedler, Francisco A. Urbanos, Reyes Jimenez-Aparicio, Wolfgang Kaim, and Goutam Kumar. Lahiri. Correspondence of RuIIIRuII and RuIVRuIII Mixed Valent States in a Small Dinuclear Complex. Chemistry - A European Journal, (18)18:5667-5675, S5667/1-S5667/21, 2012. [PUMA: acac bridged crystal cyclic dinuclear dinuclear;ruthenium electronic mixed oxamidato prepn ruthenium structure structure;spectroelectrochem valent voltammetry]

Wolfgang Kaim, Axel Klein, and Markus. Gloeckle. Exploration of Mixed-Valence Chemistry: Inventing New Analogues of the Creutz-Taube Ion. Accounts of Chemical Research, (33)11:755--763, 2000. [PUMA: Creutz Taube chem ion mixed prepn review valent]

Sylvia Ernst, Volker Kasack, and Wolfgang. Kaim. What determines the comproportionation constant in molecule-bridged mixed-valence complexes? Evidence for the crucial role of the ligand LUMO in four ruthenium(II)ruthenium(III) dimers. Inorganic Chemistry, (27)7:1146--1148, 1988. [PUMA: azobipyridine bipyridine complex complex;LUMO complex;electron complex;pyridylpyrazine comproportionation;comproportionation comproportionation;pyridyltetrazine comproportionation;sym comproportionation;voltammetry density dinuclear heterocycle mixed nitrogen ruthenium valent voltammetry]

Stanislav Zalis, Biprajit Sarkar, Carole Duboc, and Wolfgang. Kaim. Evidence for the dimer-of-(mixed-valent dimers) configuration in tetranuclear (μ4-TCNX)Ru(NH3)548+, TCNX = TCNE and TCNQ, from DFT calculations. Monatshefte fuer Chemie, (140)7:765--773, 2009. [PUMA: complex configuration dimer mixed ruthenium tetracyanoethene tetranuclear valent]

Moumita Koley, Biprajit Sarkar, Sandeep Ghumaan, Ece Bulak, Jan Fiedler, Wolfgang Kaim, and Goutam Kumar. Lahiri. Probing Mixed Valence in a New tppz-Bridged Diruthenium(III,II) Complex (μ-tppz)Ru(bik)Cl23+ (tppz = 2,3,5,6-Tetrakis(2-pyridyl)pyrazine, bik = 2,2'-Bis(1-methylimidazolyl)ketone): EPR Silence, Intervalence Absorption, and nCO Line Broadening. Inorganic Chemistry, (46)9:3736--3742, 2007. [PUMA: ESR IR UV charge electrochem methylimidazolylketone methylimidazolylketone;intervalence methylimidazolylketone;ruthenium mixed oxidn prepn pyridylpyrazine redn ruthenium transfer transition valent]

Wolfgang Kaim, and Goutam Kumar. Lahiri. Unconventional mixed-valent complexes of ruthenium and osmium. Angewandte Chemie, International Edition, (46)11:1778--1796, 2007. [PUMA: bridged complex electron exchange intramol ligand mediated mixed osmium review review;review review;valence ruthenium transfer transfer;ruthenium valent]

Wolfgang Kaim, Sascha Berger, Stefan Greulich, Ralf Reinhardt, and Jan. Fiedler. Electronic coupling of two Cp*ClM+/Cp*M reaction centers via p conjugated bridging ligands: Similarities and differences between rhodium and iridium analogues. Journal of Organometallic Chemistry, (582)2:153--159, 1999. [PUMA: bidentate binuclear bispyridinyltetrazine center;iridium complex coupling diiridium dirhodium electron intermediate iridium redn redox rhodium spectroelectrochem;mixed tetrazinebispyrinyl valent]

Axel Klein, Steffen Hasenzahl, Wolfgang Kaim, and Jan. Fiedler. On the Question of Mixed-Valent States in Ligand-Bridged Dinuclear Organoplatinum Compounds RkPt(m-L)PtRkn, k = 2 or 4. Organometallics, (17)16:3532--3538, 1998. [PUMA: bridged cyclic dinuclear ligand organo organoplatinum organoplatinum;mixed organoplatinum;platinum prepn;spectroelectrochem pyrazine tetrazine valent voltammetry]