One-dimensional π- d system with axially substituted iron(III) phthalocyanine

Abstract

With the axially CN-substituted phthalocyanines, novel one-dimensional conductors, (PTMA) x [M III (Pc)(CN) 2 ]·yCH 3 CN (M=Co and Fe) have been obtained. Although their crystal structures appear as if they were simple salts, their physical properties show metallic behaviors. These crystals are therefore partially oxidized salts in which part of the cation sites are replaced by CH 3 CN. Especially, when M=Fe, the Pc unit has a local magnetic moment and a 1-D π-d system is formed. The existence of the π-d interaction is suggested from the electrical and magnetic measurements.