New Low-Dimensional Molecular Metals: Single-Crystal Electrical Conductivity of Nickel Phthalocyanine Iodide

Abstract
Single crystals of NiPcI1.0 (Pc = phthalocyanine), which are composed of one-dimensional stacks of (NiPc)+0.33 molecules and chains of I3- molecules, exhibit metallic electrical conductivity in the stacking direction. At room temperature the mean free path of the carrier is 3.3 to 8.2 angstroms.