A Purely Organic Molecular Metal Based on a Hydrogen‐Bonded Charge‐Transfer Complex: Crystal Structure and Electronic Properties of TTF‐Imidazole–<i>p</i>‐Chloranil

Abstract

Modification of tetrathiafulvalene with an imidazolyl substituent as a hydrogen-bond donor allows the generation of a hydrogen-bonded 2:1 charge-transfer complex with chloranil. This complex forms a three-dimensional network with columnar stacking of each component and multiple S⋅⋅⋅S interactions (see picture). This strongly hydrogen-bonded purely organic conducting material is the first to display metallic behavior.