%0 Journal Article %1 Albrecht.2000c %A Albrecht, Markus %A Kaim, Wolfgang. %D 2000 %J Zeitschrift fuer Anorganische und Allgemeine Chemie %K ESR;imidazolylglyoxal complex complex;rhodium coordination;iridium copper crystal imidazolylglyoxal metal prepn rhodium structure structure;mol transition %N 6 %P 1341--1348 %T Coordination of rhodium(III), iridium(III), and copper(II) with the potentially tetradentate acceptor ligand bis(1-methylimidazol-2-yl)glyoxal (big) %V 626 %X Bis(1-methylimidazol-2-yl)glyoxal (big), which has hitherto not been used in coordination chem., crystallizes to form two perpendicular (1-methylimidazol-2-yl)carbonyl mol. halves. Out of the various possibilities for mono- and bis-chelate coordination, the N,N'-alternative with a 7-membered chelate ring is realized in Cp*Cl(big)Rh(PF6) as evident from crystal structure anal. The Ir analog reacts by hydration of big and elimination of HCl to form Cp*(bigOH)Ir+ which dimerizes in the crystal through H-bonding and contains one 5- and one 6-membered chelate ring involving the alcoholate O. Reaction of Cu(ClO4)2 with the ligand big yields Cu(big)22+ with an ESR spectrum that suggests the coordination of the central metal by four N atoms in an approx. planar setting. on SciFinder(R)

@article{Albrecht.2000c, abstract = {Bis(1-methylimidazol-2-yl)glyoxal (big), which has hitherto not been used in coordination chem., crystallizes to form two perpendicular (1-methylimidazol-2-yl)carbonyl mol. halves. Out of the various possibilities for mono- and bis-chelate coordination, the N,N'-alternative with a 7-membered chelate ring is realized in [Cp*Cl(big)Rh](PF6) as evident from crystal structure anal. The Ir analog reacts by hydration of big and elimination of HCl to form [Cp*(bigOH)Ir]+ which dimerizes in the crystal through H-bonding and contains one 5- and one 6-membered chelate ring involving the alcoholate O. Reaction of Cu(ClO4)2 with the ligand big yields [Cu(big)2]2+ with an ESR spectrum that suggests the coordination of the central metal by four N atoms in an approx. planar setting. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Albrecht, Markus and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2c2afcb51d2981ea1f6af8a744ebbb800/huebleriac}, interhash = {a2bf3f97bc8b2914fca5e0f19065c3cc}, intrahash = {c2afcb51d2981ea1f6af8a744ebbb800}, issn = {0044-2313}, journal = {Zeitschrift fuer Anorganische und Allgemeine Chemie}, keywords = {ESR;imidazolylglyoxal complex complex;rhodium coordination;iridium copper crystal imidazolylglyoxal metal prepn rhodium structure structure;mol transition}, number = 6, pages = {1341--1348}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Coordination of rhodium(III), iridium(III), and copper(II) with the potentially tetradentate acceptor ligand bis(1-methylimidazol-2-yl)glyoxal (big)}, volume = 626, year = 2000 }