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Cobalt(II) mediates electronic coupling between two N-methyl-pyridinium-terpyridine
ligands that are related to redox-active N,N-dialkyl-4,4'-bipyridinium
dications (viologens). Borderline Class II/III electronic delocalization
imparts the cobaltoviologen complex with distinct electronic properties (e.g. 7
accessible redox states) relative to those of viologens, leading to enhanced