Affiliation:
1. The Department of Chemistry, The Ohio State UniversityColumbus, OH 43210, USA
Abstract
The MM quadruple bond of configuration MM σ
2
π
4
δ
2
is redox active and in many ways ideally suited for studies of mixed valency when two or more such centres are linked by a bridging ligand. In this account, the mechanism of electronic coupling is examined for complexes of the type [L
3
M
2
bridgeM
2
L
3
]
0/+
where L, a pivalate; bridge, a dicarboxylate or related ligand and M, Mo or W. The represented examples allow us to probe electronic factors close to the class II/III border and readily distinguish between electron and hole transfer in the superexchange mechanism. The potential for mixed valence organic radical anions mediated by the M
2
centre is also raised and one specific example of class III behaviour is described.
Subject
General Physics and Astronomy,General Engineering,General Mathematics
Cited by
13 articles.
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