October 1, 1989Angewandte Chemie International Edition in English25 citations
Pronounced Anion Dependence of Valence Detrapping Temperature in Mixed‐Valence 1′, 1‴‐Disubstituted Biferrocenium Salts
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Abstract
The rate of intramolecular electron transfer changes from > 109 s−1 at 4.2 K to < 107 at 350 K when I is exchanged for PF in the mixed-valence solid diiodobiferrocenium salt 1. This is revealed by Mössbauer and EPR spectra. Coulomb interactions between cation and surrounding anions are decisive for the rate of electron transfer.