Electrocrystallisation of conductive nonstoicheiometric adducts of tetrathiafulvalene with inorganic or organic anions, and of similar adducts of tetracyanoquinodimethane
Abstract
Growth of single crystals of TTFXn 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.