ISSN:
1572-901X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Summary Bimetallic complexes of the general formula [Cl3(PPh3)2ReIII(NC―Ar―CN)ReIII(PPh3)2Cl3] (where NC―Ar―CN represents an aromatic dinitrile) have been prepared and their solution phase electrochemistry examined. Each of these complexes undergoes two one-electron metal-centred oxidations. The potential difference between these oxidations gives a measure of the stability of the ReIII/ReIV mixed-valence state toward disproportionation, and ranges from 〈0.050 V in the most weakly coupled system (4,4′-biphenyldicarbonitrile bridge) to ca. 0.200 V 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00166014
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