Premium
Pronounced Anion Dependence of Valence Detrapping Temperature in Mixed‐Valence 1′, 1‴‐Disubstituted Biferrocenium Salts
Author(s) -
Webb Robert J.,
Rheingold Arnold L.,
Geib Steven J.,
Staley Donna L.,
Hendrickson David N.
Publication year - 1989
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198913881
Subject(s) - valence (chemistry) , chemistry , ion , electron paramagnetic resonance , electron transfer , intramolecular force , spectral line , crystallography , nuclear magnetic resonance , stereochemistry , physics , organic chemistry , astronomy
The rate of intramolecular electron transfer changes from > 10 9 s −1 at 4.2 K to < 10 7 at 350 K when I 3 ⊖is exchanged for PF 6 ⊖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.