Photoinduced absorption spectra of halogen-bridged binuclear metal complexes: Possible contrast between R4[Pt2(P 2O5H2)4X]·nH2O and Pt2(CH3CS2)4I

Abstract

The optical conductivity of photogenerated solitons in quasi-one- dimensional halogen-bridged binuclear metal (MMX) complexes is investigated with particular emphasis on a comparison between the two family compounds R 4[Pt2(pop)4X]·nH2O (X = Cl, Br, I; R = NH4, Na, K, . . .; pop = diphosphonate = P 2O5H22-) and Pt2(dta) 4I (dta = dithioacetate = CH3CS2-). Soliton-induced absorption spectra for the pop complexes should split into two bands, while those for the dta complex should consist of a single band. ©2005 The Physical Society of Japan.