%0 Journal Article %1 Ernst.1989 %A Ernst, Sylvia %A Haenel, Peter %A Jordanov, Jeanne %A Kaim, Wolfgang %A Kasack, Volker %A Roth, Eberhard. %D 1989 %J Journal of the American Chemical Society %K bipyridine configuration electrochem redox ruthenium semiquinone semiquinone;ESR semiquinone;UV semiquinone;electron semiquinone;phenanthrolinesemidione semiquinone;phosphinobenzosemiquinone %N 5 %P 1733--1738 %R 10.1021/ja00187a026 %T Stable binuclear o- and p-semiquinone complexes of [Ru(bpy)2]2+. Radical ion versus mixed-valence dimer formulation %V 111 %X Paramagnetic [Ru(bpy)2]2(μ-L3+ [L = N,O;N',O'-coordinating 4,7-phenanthroline-5,6-semidione and P,O;P',O'-coordinating 2,5-bis(diphenylphosphino)-p-benzosemiquinone; bpy = 2,2'-bipyridine] were obtained as redox-active yet stable species. UV-visible-near-IR spectrosocopic results were analyzed for the 3 chem. and electrochem. available oxidn. states (2+/3+/4+), and the ESR data of the (3+) intermediates show that these 1st binuclear semiquinone complexes are situated at the borderline between anion radical complexes and metal-centered mixed-valent dimers. [on SciFinder(R)]

@article{Ernst.1989, abstract = {Paramagnetic {[Ru(bpy)2]2(μ-L}3+ [L = N,O;N',O'-coordinating 4,7-phenanthroline-5,6-semidione and P,O;P',O'-coordinating 2,5-bis(diphenylphosphino)-p-benzosemiquinone; bpy = 2,2'-bipyridine] were obtained as redox-active yet stable species. UV-visible-near-IR spectrosocopic results were analyzed for the 3 chem. and electrochem. available oxidn. states (2+/3+/4+), and the ESR data of the (3+) intermediates show that these 1st binuclear semiquinone complexes are situated at the borderline between anion radical complexes and metal-centered mixed-valent dimers. [on SciFinder(R)]}, added-at = {2022-06-15T11:26:56.000+0200}, author = {Ernst, Sylvia and Haenel, Peter and Jordanov, Jeanne and Kaim, Wolfgang and Kasack, Volker and Roth, Eberhard.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/271be9cd5ac966edd4ef3c6b7f8c53b63/huebleriac}, doi = {10.1021/ja00187a026}, interhash = {eee42a6edcfa2ad9eb63266a540ac815}, intrahash = {71be9cd5ac966edd4ef3c6b7f8c53b63}, issn = {0002-7863}, journal = {Journal of the American Chemical Society}, keywords = {bipyridine configuration electrochem redox ruthenium semiquinone semiquinone;ESR semiquinone;UV semiquinone;electron semiquinone;phenanthrolinesemidione semiquinone;phosphinobenzosemiquinone}, number = 5, pages = {1733--1738}, timestamp = {2022-06-15T09:26:56.000+0200}, title = {Stable binuclear o- and p-semiquinone complexes of [Ru(bpy)2]2+. Radical ion versus mixed-valence dimer formulation}, volume = 111, year = 1989 }