Crystal Structure of Ruthenium Phthalocyanine with Diaxial Monoatomic Ligand: Bis(Triphenylphosphine)Iminium Dichloro(Phthalocyaninato(2‐))Ruthenium(III)

Abstract

Axially‐ligated iron phthalocyanines have been found to be good molecular conductors with giant negative magnetoresistance (GNMR) which originates from a strong intramolecular π‐d interaction between the metal and phthalocyanine. Ab initio theoretical calculations showed that substitution of ruthenium into the phthalocyanine complex would result in a significant increase in the π‐d interaction of the system, potentially intensifying GNMR. This paper presents the crystal preparation and X‐ray structural characterization of bis(triphenylphosphine)iminium dichloro(phthalocyaninato(2‐))ruthenium(III), PNP [RuIII(Pc2−)Cl2]. It is observed that [RuIII(Pc2−)Cl2] system has a symmetric planar RuPc unit with perpendicular axial ligands which results in a unidirectional and uniform solid‐state arrangement, suitable for π‐d interaction‐based molecular conductors with potentially exceptional GNMR.