Mono- and Mixed-Valence Tetrathiafulvalene Semiconductors (TTF)BiI4 and (TTF)4BiI6 with 1D and 0D Bismuth-Iodide Networks

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• 作者：Hayden A. Evans ; John G. Labram ; Sara R. Smock ; Guang Wu ; Michael L. ChabinycRam Seshadri ; Fred Wudl
• 刊名：Inorganic Chemistry
• 出版年：2017
• 出版时间：January 3, 2017
• 年：2017
• 卷：56
• 期：1
• 页码：395-401
• 全文大小：417K
• ISSN：1520-510X

文摘

Two new compounds containing tetrathiafulvalene (TTF) cations with extended and discrete anions based on Bi and I are reported. The compound (TTF)BiI₄ comprises [BiI₂I_4/2]⁻ chains of edge-shared octahedra that are interspersed with stacks of TTF^+•. The compound (TTF)₄BiI₆ has mixed-valence stacks of TTF and TTF^+• and discrete molecules of TTF^+• separated by discrete [BiI₆]⁻³ anions. The optical and electrical transport properties of these compounds are reported. Due to the mixed-valence stacks of TTF, (TTF)₄BiI₆ is the significantly better electrical conductor than (TTF)BiI₄, despite the discrete nature of the inorganic moiety.