Publications

Ralph Huebner, Biprajit Sarkar, Jan Fiedler, Stanislav Zalis, und Wolfgang. Kaim. Metal(IV) Complexes M(LN,O,S)2n (M = Ru, Os) of a Redox-Active o-Amidophenolate Ligand (LN,O,S)2- with Coordinating Thioether Appendix. European Journal of Inorganic Chemistry, (2012)22:3569-3576, S3569/1-S3569/5, 2012. [PUMA: calcn complex complex;DFT complex;ESR complex;mononuclear crystal cyclic mononuclear osmium prepn ruthenium spectra structure;UV thiophenylamidophenolate tridentate voltammetry]

Fridmann M. Hornung, Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Leonardo D. Slep, und Jan. Fiedler. Spectroelectrochemical Characterization of the Two-Step Redox System (μ-pz)Os(CN)52n- (n = 4, 5, 6; pz = Pyrazine). Similarities and Differences in Relation to the Creutz-Taube System. Inorganic Chemistry, (37)2:311--316, 1998. [PUMA: charge cyano dinuclear dinuclear;electrochem dinuclear;osmium osmium oxidn prepn pyrazine spectra spectroelectrochem transfer]

Shengfa Ye, Biprajit Sarkar, Carole Duboc, Jan Fiedler, und Wolfgang. Kaim. The Redox Series M(bpy)2(Q)n+, M = Ru or Os, Q = 3,5-Di-tert-butyl-N-phenyl-1,2-benzoquinonemonoimine. Isolation and a Complete X and W Band EPR Study of the Semiquinone States (n = 1). Inorganic Chemistry, (44)8:2843--2847, 2005. [PUMA: EPR benzoquinonemonoimine osmium potential potential;ruthenium prepn redox spectroelectrochem]

Markus Gloeckle, Wolfgang Kaim, und Jan. Fiedler. Valence Delocalization despite Weak Metal-Metal Coupling in a Bis(organoosmium(III,II)) Complex with a Pyrazine Bridge. Organometallics, (17)23:4923--4925, 1998. [PUMA: bridged complex complex;mixed complex;osmium delocalization;spectroelectrochem dinuclear electrochem osmium oxidn prepn pyrazine valence]

Sudipta Chatterjee, Priti Singh, Jan Fiedler, Radka Bakova, Stanislav Zalis, Wolfgang Kaim, und Sreebrata. Goswami. Effect of metal exchange (Os vs. Ru) and co-ligand variation (Cl- vs. acac-) on the oxidation state distribution in complexes of an o-phenylenediamido(2-)/o-quinonediimine redox system. Dalton Transactions, 37:7778--7785, 2009. [PUMA: complex complex;ESR complex;electronic complex;electrooxidn complex;electroredn complex;geometry complex;osmium complex;valence crystal optimized osmium prepn prepn;UV quinonediimine ruthenium structure structure;ruthenium visible]

Abhishek Mandal, Anita Grupp, Brigitte Schwederski, Wolfgang Kaim, und Goutam Kumar. Lahiri. Varying Electronic Structures of Diosmium Complexes from Noninnocently Behaving Anthraquinone-Derived Bis-chelate Ligands. Inorganic Chemistry, (54)16:7936--7944, 2015. [PUMA: UV bipyridine complex complex;IR complex;electron complex;osmium crystal density diaminoanthraquinone dihydroxyanthraquinone osmium phenylazopyridine potential prepn redox spectroelectrochem spin structure]

Subhas Samanta, Priti Singh, Jan Fiedler, Stanislav Zalis, Wolfgang Kaim, und Sreebrata. Goswami. Singlet Diradical Complexes of Ruthenium and Osmium: Geometrical and Electronic Structures and their Unexpected Changes on Oxidation. Inorganic Chemistry, (47)5:1625--1633, 2008. [PUMA: 8 ESR UV crystal diradical electrochem metal osmium oxidn phenylaminophenylazopyridine phenylaminophenylazopyridine;group prepn ruthenium singlet spectroelectrochem;phenylaminophenylazopyridine structure]

Frank Baumann, Wolfgang Kaim, Luis M. Baraldo, Leonardo D. Slep, Jose A. Olabe, und Jan. Fiedler. Reduction of the NO+ ligand in the pentacyanonitrosylosmate(II) ion. Inorganica Chimica Acta, (285)1:129--133, 1999. [PUMA: ESR complex cyano electrochem nitrosyl osmium prepn redn spectroelectrochem]

Arijit Singha Hazari, Alexa Paretzki, Jan Fiedler, Stanislav Zalis, Wolfgang Kaim, und Goutam Kumar. Lahiri. Different manifestations of enhanced p-acceptor ligation at every redox level of Os(9-OP)L2n, n = 2+, +, 0, - (9-OP- = 9-oxidophenalenone and L = bpy or pap). Dalton Transactions, (45)45:18241--18251, 2016. [PUMA: bipyridine complex crystal electrochem mol optimization osmium oxidophenalenone phenylazopyridine phenylazopyridine;ESR phenylazopyridine;osmium prepn structure]

Fridmann M. Hornung, Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Leonardo D. Slep, und Jan. Fiedler. Spectroelectrochemical Characterization of the Two-Step Redox System (μ-pz)Os(CN)52n- (n = 4, 5, 6; pz = Pyrazine). Similarities and Differences in Relation to the Creutz-Taube System. Erratum to document cited in CA128:56656. Inorganic Chemistry, (37)20:5402, 1998. [PUMA: charge cyano dinuclear electrochem erratum erratum;cyano erratum;electrochem erratum;erratum erratum;oxidn erratum;transfer osmium oxidn prepn pyrazine pyrazine;osmium spectra spectroelectrochem transfer]

Orkan Sarper, Biprajit Sarkar, Jan Fiedler, Falk Lissner, und Wolfgang. Kaim. Organoosmium complexes of imidazole-containing chelate acceptor ligands. Inorganica Chimica Acta, (363)12:3070--3077, 2010. [PUMA: DFT MO;imidazolylketone MO;optimized arene chlorocymeneosmium crystal cymene fluorophosphate;mol imidazolylglyoxal imidazolylketone mol osmium prepn reaction spectroelectrochem structure voltammetry]

Frank Baumann, Wolfgang Kaim, Jose A. Olabe, Alejandro R. Parise, und Jeanne. Jordanov. Tetranuclear osmium complexes of tetracyanoquinodimethane TCNQ, 2,2'-(cyclohexa-2,5-diene-1,4-diylidene)bis(propane-1,3-dinitrile) and 1,2,4,5-tetracyanobenzene (TCNB). Synthesis, spectroelectrochemistry and magnetism. Journal of the Chemical Society, Dalton Transactions: Inorganic Chemistry, 22:4455--4460, 1997. [PUMA: TCNB TCNQ charge complex complex;osmium intervalence magnetism magnetism;TCNQ osmium prepn spectroelectrochem spectroelectrochem;TCNB tetranuclear tetranuclear;magnetism transfer]

Martina Heilmann, Stephanie Frantz, Wolfgang Kaim, Jan Fiedler, und Carole. Duboc. Mixed-valent and radical states of complexes (bpy)2M(m-abpy)M'(bpy)2n+, M,M' = Ru or Os, abpy = 2,2'-azobispyridine: Electron transfer vs. hole transfer mechanism in azo ligand-bridged complexes. Inorganica Chimica Acta, (359)3:821--829, 2006. [PUMA: EPR azobispyridine bridge complex complex;electron complex;hole complex;mixed cyclic electrochem heterobinuclear;osmium homobinuclear osmium prepn redox ruthenium spectroelectrochem;radical transfer valence voltammetry]

Martina Bubrin, David Schweinfurth, Fabian Ehret, Stanislav Zalis, Hana Kvapilova, Jan Fiedler, Qiang Zeng, Frantisek Hartl, und Wolfgang. Kaim. Structure and Spectroelectrochemical Response of Arene-Ruthenium and Arene-Osmium Complexes with Potentially Hemilabile Noninnocent Ligands. Organometallics, (33)18:4973--4985, 2014. [PUMA: EPR FMO;mol FMO;ruthenium amidophenolate arene crystal electrochem hemilabile osmium prepn redox ruthenium spectroelectrochem structure]

Masa-aki Haga, Masahide Ishizuya, Tomokazu Kanesugi, Tomona Yutaka, Daisuke Sakiyama, Joerg Fees, und Wolfgang. Kaim. Synthesis and formation of dinuclear mixed-valent complexes of ruthenium and osmium bridged by 2-(2-pyrimidyl)benzimidazolate. Indian Journal of Chemistry, Section A: Inorganic, Bio-inorganic, Physical, Theoretical & Analytical Chemistry, (42A)9:2290--2299, 2003. [PUMA: MO bibenzimidazolate;pyrimidylbenzimidazolate bipyridine electrochem energy level osmium oxidn prepn pyrimidylbenzimidazolate redn ruthenium]

Dipanwita Das, Biprajit Sarkar, Tapan Kumar Mondal, Shaikh M. Mobin, Jan Fiedler, Wolfgang Kaim, und Goutam Kumar. Lahiri. Oxidation State Analysis of a Four-Component Redox Series Os(pap)2(Q)n Involving Two Different Non-Innocent Ligands on a Redox-Active Transition Metal. Inorganic Chemistry, (50)15:7090--7098, 2011. [PUMA: ESR NIR complex complex;osmium crystal cyclic iminobenzoquinone osmium phenylazopyridine prepn spectra structure voltammetry]

Sudipta Mondal, Vasileios Filippou, Martina Bubrin, Brigitte Schwederski, Jan Fiedler, und Wolfgang. Kaim. Metalloradical Compounds with 1,2-Dipivaloylhydrazido Ligands: Electron Transfer and Alkylation/Protonation Effects. European Journal of Inorganic Chemistry, (2019)21:2639--2647, 2019. [PUMA: alkylation calcn complex complex;spectroelectrochem crystal dipivaloylhydrazido effect mol osmium prepn protonation ruthenium structure structure;electron transfer]

Axel Knoedler, Matthias Wanner, Wolfgang Kaim, und Jan. Fiedler. Organometallic 5d6 transition metal complexes of 1-methyl-(2-alkylthiomethyl)-1H-benzimidazole ligands: Structures and electrochemical oxidation. Zeitschrift fuer Anorganische und Allgemeine Chemie, (628)5:1132--1139, 2002. [PUMA: alkylthiomethyl benzimidazole complex complex;mol electrochem osmium oxidn;crystal prepn rhenium structure]

Sascha Berger, Frank Baumann, Thomas Scheiring, und Wolfgang. Kaim. Organometallic complex cations (hn-CnR'n)M(RN:CHCH:NR)Cl+ of 1,4-diazabutadienes (M = Os and n = 6 or M = Rh, Ir and n = 5, R = 2,6-dialkylphenyl). Structures and reduction to neutral compounds (hn-CnR'n)M(RNCH:CHNR). Zeitschrift fuer Anorganische und Allgemeine Chemie, (627)4:620--630, 2001. [PUMA: azabutadiene complex complex;diazabutadiene complex;redn complex;redox complex;rhodium crystal diazabutadiene diisopropylphenyl iridium mol osmium potential prepn redox redox;crystal redox;mol structure structure;iridium]