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

Hayden A Evans; John G Labram; Sara R Smock; Guang Wu; Michael L Chabinyc; Ram Seshadri; Fred Wudl

doi:10.1021/acs.inorgchem.6b02287

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

Inorg Chem. 2017 Jan 3;56(1):395-401. doi: 10.1021/acs.inorgchem.6b02287. Epub 2016 Dec 14.

Authors

Hayden A Evans^{1

2}, John G Labram³, Sara R Smock¹, Guang Wu¹, Michael L Chabinyc^{3

4}, Ram Seshadri^{2

4}, Fred Wudl⁴

Affiliations

¹ Department of Chemistry and Biochemistry, University of California , Santa Barbara, California 93106, United States.
² Materials Research Laboratory, University of California , Santa Barbara, California 93106, United States.
³ California NanoSystems Institute, University of California , Santa Barbara California 93106, United States.
⁴ Materials Department, University of California , Santa Barbara, California 93106, United States.

PMID: 27966942
DOI: 10.1021/acs.inorgchem.6b02287

Abstract

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.