Preparation, solid-state characterisation and X-ray crystal structure of a 1:1 complex of tetrathiafulvalene and m-dinitrobenzene (TTF-mDNB)

Abstract

A crystalline 1:1 complex of tetrathiafulvalene (TTF) and m-dinitrobenzene (mDNB) has been prepared in high yield and characterised by i.r. and u.v. spectroscopy, bulk magnetic susceptibility data, four-probe d.c. conductivity, and single-crystal X-ray analysis. There is essentially no intermolecular charge transfer in the complex which has low conductivity σ_rt2.7 × 10^–9 S cm^–1. The structure consists of molecules arranged in an alternating donor-acceptor fashion along the a axis. Projection onto the plane of TTF shows that there is no eclipsing overlap between the TTF moiety and the neighbouring mDNB molecules.