Valence engineering of ionic molecular crystals: monovalent–divalent phase diagram for biferrocene–tetracyanoquinodimethane salts†
Abstract
The valence state of ionic molecular solids composed of biferrocene derivatives (D) and tetracyanoquinodimethane (TCNQ) derivatives (A), either monovalent ([D]+[A2]−) or divalent ([D]2+[A2]2−), can be controlled by changing the redox potentials and molecular volumes of the components.