金属錯体のクロモトロビズム

書誌事項

タイトル別名
  • Chromotropism of Coordination Compounds.
  • キンゾク サクタイ ノ クロモトロピズム

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説明

Transition metal complexes show beautiful colors in solid and in solutions. Their colors are changed reversibly by the changes of surrounding chemical or physical conditions such as solvent, temperature, pressure, electric power, or light, which we call chromotropism. In this review, at first, color origins of these complexes are explained, i. e., d-d transition, CT transition (metal to ligand and ligand to metal), inter-valence transition (in mixed valence compounds), etc. Secondly, some examples of chromotropisms are explained:(1) In solution;(a) CoC12 which shows solvatochromism, thermochromism, and piezochromism, (b) Mn (II, III)-complexon type complexes which show a typical electrochromism, (c) Cu (II) and Ni (II) mixed ligand complexes showing solvatochromism and thermochromism as the color indicator of solvent polarity.(2) At solid state;(a) Cu (II) and Ni (II) diamine complexes as interesting examples of thermochromism, (b) Fe (II) spin-crossover complexes which show thermochromic behavior and have photochromic switching functions at low temperature.

収録刊行物

  • 資源と素材

    資源と素材 111 (8), 523-530, 1995

    一般社団法人 資源・素材学会

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