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Competition between electron correlation of NiIII states and electron-phonon interaction of PdII-PdIV mixed-valence states in quasi-one-dimensional halogen-bridged mixed-metal complexes, Ni1-xPdX(ch
Author(s): Toshio Manabe; Masahiro Yamashita; Takuya Kawashima; Hiroshi Okamoto; Hiroshi Kitagawa; Tadaoki Mitani; Koshiro Toriumi; Hiroshi Miyamae; Katsuya Inoue; Kyuya Yakushi
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Paper Abstract

A series of single crystals of quasi-one-dimensional halogen-bridged Ni-Pd mixed-metal compounds, Ni1-xPdx(chxn)2Br3 (chxn equals 1R, 2R- cyclohexanediamine) have been obtained by electrochemical oxidation methods. In order to investigate the competition between the electron-correlation in the NiIII states (SDW states) and the electron-phonon interaction in the PdII-PdIV mixed-valence states (CDW states) in the Ni-Pd mixed-metal compounds, the single-crystal electrical conductivities, IR, resonance Raman spectra, ESR, magnetic susceptibilities, and XPS, have been measured. The electrical conductivities of these compounds show semiconducting behavior with the conductivities maximized and the activation energies minimized at x equals ca. 0.5. The IR, resonance Raman spectra, and XPS show that the PdII- PdIV mixed-valence states are influenced and approaching to the PdIII states with the increase of the NiIII components.

Paper Details

Date Published: 1 December 1997
PDF: 10 pages
Proc. SPIE 3145, Optical Probes of Conjugated Polymers, (1 December 1997); doi: 10.1117/12.279273
Show Author Affiliations
Toshio Manabe, Nagoya Univ. (Japan)
Masahiro Yamashita, Nagoya Univ. (Japan)
Takuya Kawashima, Nagoya Univ. (Japan)
Hiroshi Okamoto, Tohoku Univ. (Japan)
Hiroshi Kitagawa, Japan Advanced Institute of Science and Technology (Japan)
Tadaoki Mitani, Japan Advanced Institute of Science and Technology (Japan)
Koshiro Toriumi, Himeji Institute of Technology (Japan)
Hiroshi Miyamae, Jyosai Univ. (Japan)
Katsuya Inoue, Institute for Molecular Science (Japan)
Kyuya Yakushi, Institute for Molecular Science (Japan)

Published in SPIE Proceedings Vol. 3145:
Optical Probes of Conjugated Polymers
Z. Valy Vardeny; Lewis J. Rothberg, Editor(s)

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