%0 Journal Article %1 Sarper.2010 %A Sarper, Orkan %A Sarkar, Biprajit %A Fiedler, Jan %A Lissner, Falk %A Kaim, Wolfgang. %D 2010 %J Inorganica Chimica Acta %K DFT MO;imidazolylketone MO;optimized arene chlorocymeneosmium crystal cymene fluorophosphate;mol imidazolylglyoxal imidazolylketone mol osmium prepn reaction spectroelectrochem structure voltammetry %N 12 %P 3070--3077 %R 10.1016/j.ica.2010.04.007 %T Organoosmium complexes of imidazole-containing chelate acceptor ligands %V 363 %X (L)Os(h6-Cym)Cl(PF6), Cym = p-cymene and L = bis(1-methylimidazol-2-yl)ketone (bik) or bis(1-methylimidazol-2-yl)glyoxal (big), were obtained and characterized with respect to spectroscopy, crystal structure (big complex) and spectroelectrochem. behavior at variable temps. DFT calcns. confirm the structure of (big)Os(h6-Cym)Cl+ with imidazolyl-N-bonded Os(II) in a boat-shaped seven-membered chelate ring with small N-Os-N angles (\textless84°). Redn. of this compd. proceeds reversibly to a neutral complex of the a-semidione radical anion ligand big·-; EPR and IR spectroelectrochem. indicate very little participation from the heavy metal in the spin distribution. The analogous (bik)Os(h6-Cym)Cl+ could not be reduced reversibly to the ketyl radical complex but displayed a more reversible oxidn. at high potential. on SciFinder(R)

@article{Sarper.2010, abstract = {[(L)Os(\textgreek{h}6-Cym)Cl](PF6), Cym = p-cymene and L = bis(1-methylimidazol-2-yl)ketone (bik) or bis(1-methylimidazol-2-yl)glyoxal (big), were obtained and characterized with respect to spectroscopy, crystal structure (big complex) and spectroelectrochem. behavior at variable temps. DFT calcns. confirm the structure of [(big)Os(\textgreek{h}6-Cym)Cl]+ with imidazolyl-N-bonded Os(II) in a boat-shaped seven-membered chelate ring with small N-Os-N angles ({\textless}84°). Redn. of this compd. proceeds reversibly to a neutral complex of the \textgreek{a}-semidione radical anion ligand big·-; EPR and IR spectroelectrochem. indicate very little participation from the heavy metal in the spin distribution. The analogous [(bik)Os(\textgreek{h}6-Cym)Cl]+ could not be reduced reversibly to the ketyl radical complex but displayed a more reversible oxidn. at high potential. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Sarper, Orkan and Sarkar, Biprajit and Fiedler, Jan and Lissner, Falk and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2797a3057a11a46c48741553acbc5c966/huebleriac}, doi = {10.1016/j.ica.2010.04.007}, interhash = {4de3d887f889ea3db00822fed936c25e}, intrahash = {797a3057a11a46c48741553acbc5c966}, issn = {0020-1693}, journal = {Inorganica Chimica Acta}, keywords = {DFT MO;imidazolylketone MO;optimized arene chlorocymeneosmium crystal cymene fluorophosphate;mol imidazolylglyoxal imidazolylketone mol osmium prepn reaction spectroelectrochem structure voltammetry}, number = 12, pages = {3070--3077}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Organoosmium complexes of imidazole-containing chelate acceptor ligands}, volume = 363, year = 2010 }