Low dimensional molecular semiconductor : the radicalar bis-phthalocyaninato lutetium Pc2Lu.CH2Cl2

Crystals of solvate bisphthalocyaninato-lutetium, Pc2Lu.CH 2Cl2, are shown to be intrinsic molecular semiconductors (σR.T. = 6 x 10-5 Ω-1. cm-1 , Eact. = 0.32 eV). Both crystallographic determinations and magnetic properties demonstrate the one-dimensional character of this radicalar material. While dioxygen has drastic and reversible effects on the magnetic properties, it has not anyone on transport properties. This is characteristic of spin coupling between the adsorbed oxygen and the radicalar host molecule, Pc2Lu.CH2Cl2.