%0 Journal Article %1 Ernst.1988 %A Ernst, Sylvia %A Kaim, Wolfgang. %D 1988 %J Inorganica Chimica Acta %K bipyrimidine carbonyl electrochem electronic transition trinuclear trinuclear;redox trinuclear;tungsten tungsten %N 2 %P 223--226 %R 10.1016/S0020-1693(00)86290-8 %T On charge transfer-assisted polynucleation reactions. A trinuclear carbonyl-tungsten complex of ambident 4,4'-bipyrimidine %V 144 %X Coordinative satn. of 4,4'-bipyrimidine (L) was achieved in W(CO)52-m4-LW(CO)4. Electrochem. and spectroscopic studies of the compd. and its anion radical exhibit a metal-to-ligand charge-transfer absorption max. at unexpected high energy, despite a small HOMO/LUMO gap. Inspection of band widths shows that large Franck-Condon contributions from the structurally flexible W(CO)5 fragments are responsible for the hypsochromic shift relative to the mononuclear chelate system. The propensity of polyfunctional p acceptor ligands towards complete coordinative satn. with electron-rich metal fragments is discussed. on SciFinder(R)

@article{Ernst.1988, abstract = {Coordinative satn. of 4,4'-bipyrimidine (L) was achieved in [W(CO)5]2-\textgreek{m}4-LW(CO)4. Electrochem. and spectroscopic studies of the compd. and its anion radical exhibit a metal-to-ligand charge-transfer absorption max. at unexpected high energy, despite a small HOMO/LUMO gap. Inspection of band widths shows that large Franck-Condon contributions from the structurally flexible W(CO)5 fragments are responsible for the hypsochromic shift relative to the mononuclear chelate system. The propensity of polyfunctional \textgreek{p} acceptor ligands towards complete coordinative satn. with electron-rich metal fragments is discussed. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Ernst, Sylvia and Kaim, Wolfgang.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2e8a74b29b60d0ba7b6847b3acb4e873c/huebleriac}, doi = {10.1016/S0020-1693(00)86290-8}, interhash = {4c1d603398eb3cf72ce89d18467b029a}, intrahash = {e8a74b29b60d0ba7b6847b3acb4e873c}, issn = {0020-1693}, journal = {Inorganica Chimica Acta}, keywords = {bipyrimidine carbonyl electrochem electronic transition trinuclear trinuclear;redox trinuclear;tungsten tungsten}, number = 2, pages = {223--226}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {On charge transfer-assisted polynucleation reactions. A trinuclear carbonyl-tungsten complex of ambident 4,4'-bipyrimidine}, volume = 144, year = 1988 }