A NEW APPROACH TO COFACIALLY ASSEMBLED PARTIALLY OXIDIZED METAL PHTHALOCYANINE LOW-DIMENSIONAL SOLIDS - SYNTHESIS, STRUCTURE, AND ELECTRICAL-CONDUCTIVITY PROPERTIES OF THE FE(IV) CONTAINING SPECIES [(PCFE)(2)C](I-3)(0.66) OBTAINED BY I-2 DOPING OF (MU-CARBIDO)BIS[PHTHALOCYANINATOIRON(IV)]

Oxidation by iodine of the Fe(IV)-phthalocyanine mu-carbido complex [P cFe]C-2 (Pc = phthalocyaninato anion) leads to the species [(PCFe)(2)C ](I-3)(0.66) (I), whose structure consists of partially oxidized stack ed [(PCFe)(2)C](+0.66) cations and parallel chains of I-3(-) ions. Pow der X-ray diffraction patterns of I indicate isomorphism with PcNiI an d other known saltlike I-2 doped linearly elongated metal phthalocyani ne derivatives, though different samples having different crystalline character are obtained, Ia and Ib, depending on the medium used for th e preparation, i.e. benzene or chloronaphthalene, respectively. Mossba uer, EPR, and IR spectra confirm, in both Ia and Ib, the presence of F e(IV) and the formation of the phthalocyanine pi-cation radical, while Raman spectra give clear evidence of the presence of the totally symm etric I-3(-) anion. IR spectra show also, both for Ia and Ib, the typi cal broad absorption normally present for highly electrically conducti ng systems. Crystalline character and IR spectral features are examine d in connection with the observed electrical conductivity values obtai ned on pressed powders, i.e (1.0 +/- 0.5) x 10(-2) Omega(-1) cm(-1) (I a) and (0.5 +/- 0.5) Omega(-1) cm(-1) (Ib). A relationship between str ucture and electrical conductivity is discussed in the light of the da ta already reported on related systems.