Preparation and structures of biferrocenes with alicyclic substituents: Order-disorder of substituents in the crystal structures of cyclohexenylbiferrocene and its charge-transfer salt
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- 作者：Tomoyuki Mochida ; Takashi Kobayashi ; Takahiro Akasaka
- 关键词：Biferrocene ; Crystal structures ; Redox potentials ; Charge-transfer salts ; Mixed-valence compound
- 刊名：Journal of Organometallic Chemistry
- 出版年：2013
- 出版时间：1 October, 2013
- 年：2013
- 卷：741-742
- 期：Complete
- 页码：72-77
- 全文大小：1028 K
文摘
Biferrocene derivatives with cyclohexyl, cyclohexenyl, and cyclopentenyl substituents were prepared and crystallographically characterized. The cyclohexenyl substituents exhibited twofold disorder in the crystals. A charge-transfer salt of 1¡ä-cyclohexenylbiferrocene with [Ni(mnt)2] was prepared. The biferrocenium cation in this salt was in a valence-trapped state owing to electrostatic interactions with the anion. The cyclohexenyl substituent in the [Ni(mnt)2] salt exhibited no disorder because of closer packing of the salt.