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Electrochemical studies of bimetallic rhenium(III) complexes possessing two accessible mixed-valence states by G. N. Holder; T. F. Guarr is a Chemistry article available to read on EtoBox.

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## Bimetallic complexes of the general formula [C13(PPh3)zRenI(NC Ar--CN)Rem(PPh3)2C13] (where NC Ar CN represents an aromatic dinitrile) have been prepared and their solution phase electrochemistry examined. Each of these complexes undergoes two oneelectron metal-centred oxidations. The potential difference between these oxidations gives a measure of the stability of the Rein/Re w mixed-valence state toward disproportionation, and ranges from < 0.050 V in the most weakly coupled system (4,4'-biphenyldicarbonitrile bridge) to ca. 0.200V for the most strongly interacting metal centres (9,10-dicyanoanthracene bridge). Likewise, all of the complexes show two one-electron transfers in either simultaneous or sequential fashion depending on the nature of the bridge.

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Author

G. N. Holder; T. F. Guarr

Publisher

Springer; Springer-Verlag; Kluwer Academic Publishers; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0340-4285)

Published

1996

Language

EN

Field

Chemistry (Physical Sciences)