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• W2040492816 abstract "Zwischen den Komplexen [(CO)4VEMe2]2 (1), [(CO)4CrEMe2](2) (2) und [(CO)4MnEMe2]2 (3) mit E = P(a) oder As (b) lassen sich durch elektrochemische Redoxreaktionen isoelektronische Beziehungen herstellen. Die einzelnen Redoxpotentiale und die erreichbaren Oxidationsstufen sind in systematischer Weise von den Metall- und Brückenatomen abhängig. 1a disproportioniert in Donor-Lösungsmitteln unter Bildung des anionischen Komplexes [(CO)4] V PMe[2]2−, der auch durch Reduktion zugänglich und als Natriumsalz isolierbar ist. Substitutionen an 1 mit Phosphan- und Arsan-Liganden verlaufen leicht und stufenweise zu den Verbindungen V2(PMe2)2(CO)7L (6) und V2(PMe2)2(CO)6L2 (7). Diese erlauben reversible Einelektronen-Übertragungen, deren Redoxpotentiale mit dem Donor/Akzeptor-Vermögen und dem Raumbedarf der Liganden korrelierbar sind. Redox and substitution Chemistry of Complexes [(CO)4MEMe2]2 with M = V, Cr, Mn and E = P, As Among the complexes [(CO)4VEMe2]2, (1), [(CO)4CrEMe2] (2), and [(CO)4MnEMe2]2 (3) with E = P (a) or As (b) isoelectronic relations can be established by electrochemical redox reactions. The redox potentials and the accessible oxidation states depend systematically upon the metal and bridge atoms. 1a disproportionates in donor solvents with formation of the anionic complex (CO)4VPMe22− which is also obtainable by reduction and can be isolated as the sodium salt. substitutions at 1 with phosphane and arsane ligands proceed smoothly and stepwise to give the compounds V2(PMe2)2(CO)7L(6) and V2(PMe2)2(CO)6L2 (7). These allow reversible one-electron transfers, the redox potentials of which can be correlated with the donor/acceptor properties and the steric requirements of the ligands." @default.
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• W2040492816 date "1981-02-01" @default.
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• W2040492816 title "Redox‐ und Substitutionschemie von Komplexen [(CO) ₄ MEMe ₂ ] ₂ mit M = V, Cr, Mn und E = P, As" @default.
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• W2040492816 doi "https://doi.org/10.1002/cber.19811140213" @default.
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