Electrocrystallisation of conductive nonstoicheiometric adducts of tetrathiafulvalene with inorganic or organic anions, and of similar adducts of tetracyanoquinodimethane

Abstract

Growth of single crystals of TTFX_n by electrocrystallisation on a platinum anode in acetonitrile solutions of TTF⁰ and X^– gives unidimensionally metallic nonstoicheiometric (n≠ 1) adducts (TTF is tetrathiafulvalene, X^– is NO₃^–, Cl^–, Br^–, I^–, HCO₃^–, BF₄^–, HSO₄^–, C₂O₄K^–, OAc^–, maleate, fumarate, p-MeC₆H₄SO₂^–, N₃^–, or B₄O₇^–, the last three giving powders or microcrystals); conductivities at ca. 300 K are 10^–3–20 Ω^–1 cm^–1, and (NO₂)_0·1 TCNQ (TCNQ = tetracyanoquinodimethane) and other TCNQ adducts were likewise prepared cathodically.