Biferrocenium salts with magnetite-like mixed-valence iron: coexistence of Fe3+ and Fe(2.5+) in the crystal.
The biferrocene-based salt [Bifc]2[Ni(mnt)2]3 (Bifc = bis(isopropylthio)biferrocene; mnt = maleonitriledithiolate) contains a biferrocenium monocation and dication within the same crystal. The coexistence of Fe(3+) and mixed-valence Fe(2.5+), which resembles the valence state of magnetite, was confirmed by Mössbauer spectroscopy.
Department of Chemistry, Graduate School of Science, Kobe University, Rokkodai, Nada, Hyogo 657-8501, Japan. tmochida@platinum.kobe-u.ac.jp.
Tomoyuki
T
Mochida
Eri
E
Nagabuchi
Masashi
M
Takahashi
Hatsumi
H
Mori