Delocalization and Valence Tautomerism in Vanadium Tris(iminosemiquinone) Complexes
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چکیده
منابع مشابه
Intermediate-valence tautomerism in decamethylytterbocene complexes of methyl-substituted bipyridines.
Multiconfigurational, intermediate valent ground states are established in several methyl-substituted bipyridine complexes of bis(pentamethylcyclopentadienyl)ytterbium, Cp2*Yb (Me(x)-bipy). In contrast to Cp2*Yb(bipy) and other substituted-bipy complexes, the nature of both the ground state and the first excited state are altered by changing the position of the methyl or dimethyl substitutions ...
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We report electrochemical and spectroelectrochemical investigations on the butadienediyl-bridged diruthenium complexes [{Ru(PPh3h(CO)CI} 2(Il-C4H4)] (1), [{Ru(PEt3h(CO)Clh(~l-C4H4)] (2), and [{Ru(PPh3h (CO)CI(NCsH4COOEt-4) h(p-C4H4)] (3). All these complexes are oxidized in two consecutive one-electron steps separated by 315 to 680 mV, depending on the coligands. The first oxidation is a chemic...
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For the RuIII/II couple in [(bpy)2ClOs(4,4′-bpy)Ru(NH3)5] (bpy ) 2,2′-bipyridine; 4,4′-bpy ) 4,4′bipyridine), E1/2 varies linearly with the donor number (DN) of the solvent with a slope of -26 ( 3 mV/DN unit ranging from nitromethane to dimethyl sulfoxide. For the OsIII/II couple, the variation is -3 ( 1 mV/DN unit. Plots of ∆E1/2 ) E1/2(2) E1/2(1) vs DN (E1/2 is the half wave potential for the...
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Mixed-valence complexes (chemical species containing multiple metal centers that exist formally in more than one oxidation state) represent ideal models for testing and understanding optical and thermal electron transfer.1 Though the prototypical mixed-valence ion, the Creutz-Taube ion, was first studied over 25 years ago,2 new mixed-valence complexes continue to be made and studied. Among the ...
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ژورنال
عنوان ژورنال: Angewandte Chemie International Edition
سال: 2016
ISSN: 1433-7851,1521-3773
DOI: 10.1002/anie.201510403