Mixed-valence state of optically active 1',1'”-bis(2-phenylpropyl)-1,1”-biferrocenium salts

The mixed-valence state of 1',1'”-bis(2-phenylpropyl)-1,1”-biferrocenium polyiodides was studied for (R,R), (S,S), (R,S) isomers and the DL modification. The effect of cation symmetry appeared differently from 1',1'”-bis(2-phenylbutyl)-derivatives, while similar packing effect was observed.