Charge fluctuation in quasi-one-dimensional halogen-bridged platinum binuclear mixed-valence compounds, A(4)[Pt-2(pop)(4)I]center dot nH(2)O

Kawashima T; Miya S; Manabe T; Yamashita M; Takizawa K; Ishii T; Matsuzaka H; Sonoyama T; Kitagawa H; Mitani T; Matsuzaki H; Kishida H; Okamoto H; Ikeda R

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.342, 145-150, 2000

DOI10.1080/10587250008038258 Export Citation

Charge fluctuation in quasi-one-dimensional halogen-bridged platinum binuclear mixed-valence compounds, A(4)[Pt-2(pop)(4)I]center dot nH(2)O

Kawashima T, Miya S, Manabe T, Yamashita M, Takizawa K, Ishii T, Matsuzaka H, Sonoyama T, Kitagawa H, Mitani T, Matsuzaki H, Kishida H, Okamoto H, Ikeda R

New quasi-one-dimensional halogen-bridged platinum binuclear mixed-valence compounds, A(4)[Pt-2(pop)(4)I]. nH(2)O (A= alkaline metal and NH4, and; n=0, 2 and 4) have been synthesized. The Li, Na and K compounds take structures -Pt2.5+-Pt2.5+-X-Pt2.5+-Pt2.5+-X- (a). On the other hand, the Cs and Rb compounds take structures ...Pt2+-Pt2+...X-Pt3+-Pt3+-X... (b). Interestingly, the NH4 compound takes a phase transition between (a) and (b) around 200K.

Keywords:phase transitions;mixed-valence complexes