A manganese(III) complex salt, TPP[Mn-III(Pc)(CN)(2)](.) DCM was crystallized in dichloromethane solution (Pc = phthalocyaninato, TPP+ = tetraphenylphosphonium, and DCM = dichloromethane). In the crystal, Pc molecules form a pair of one-dimensional regular chains along the c axis. The magnetic susceptibility measurement revealed Mn ions in the low-spin state (S = 1) and a spin-orbit coupling effect due to the incomplete quenching of the angular orbital moment under the symmetrical ligand field.