Abstract
The method of the previous paper (I) in this series is applied to situations describable by a tight-binding Hamiltonian which shows no energy band gap as the bridge length becomes infinite. It is applicable to systems describable by just one set of quantum numbers, e.g. vibrational or electronic; here we consider specifically the purely electronic aspects of the electron-transfer phenomenon. Examples of systems for which this treatment is valid include, for essentially π-type bridges, Brooker dye molecules, for σ-type bridges, the extensive series of stacked-complex systems with negligible Peierls distortion such as cofacially joined phthalocyanines.
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