Activation of hydrogen- and halogen-bonding interactions in tetrathiafulvalene-based crystalline molecular conductors

An overview is given of the effort accomplished to direct intermolecular interactions in crystalline molecular conductors based on tetrathiafulvalene (TTF) derivatives. Focus is on the use of directional, electrostatic, normal, and weak hydrogen bonds and halogen bonds. Specifically, tetrathiafulvalene molecules functionalized by hydrogen-bonding donor or acceptor groups such as alcohols, carboxylic acids, and amides as well as halogenated tetrathiafulvalenes and their salts, are covered, specifically concentrating on the crystal structures they adopt in the solid state.