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Mixed-valence two-legged MX-ladder complex with a pair of out-of-phase charge-density waves
Atsushi Kobayashi1, Hiroshi Kitagawa
1Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki 6-10-1, Fukuoka 821-8581, Japan.
Abstract:
A novel two-legged MX-ladder complex {[(dien)PtIVBr2-bpy-PtII(dien)]Br4.2H2O}infinity was synthesized and analyzed by single-crystal X-ray diffraction method and Raman and diffuse reflectance spectra. The electronic structure on two-legged MX-ladder is a pair of out-of-phase charge-density-waves state within each ladder, and these pairs of CDWs are also ordered from ladder to ladder. The intervalence charge-transfer (PtII to PtIV) excitation energy is significantly larger than that in the MX-chain system because of the intersite Coulomb repulsion along the rung.
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