Conductive polymers consisting of partially oxidized, face-to-face linked metallomacrocycles

This communication reports on an approach to control molecular stacking interactions in low-dimensional mixed valence materials by locking partially oxidized metallomacrocycles together in a face-to-face orientation. Iodine doping of the face-to-face linked oligomers (M(Pc)O)(n)(M = Si, Ge, Sn; Pc = phthalocyaninato) produces electrically conductive polymers (M(Pc)O)I(X)n with a range of x stoichiometries. Electronic and lattice structure have been studied by resonance Raman spectroscopy, which indicates the presence of I3(-) or I5(-) but no I2, and by X-ray powder diffraction, which allows estimation of the interplanar (ring-ring) spacings. (Author)