Derivatographic Studies on Transition Metal Complexes. X. Thermal Octahedral-to-Square Planar Transformation of Ni(<I>NN</I>-deen)<SUB>2</SUB>X<SUB>2</SUB>·<I>n</I>H<SUB>2</SUB>O in Solid Phase

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概要

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• Thermal reactions of the complexes [Ni(H<SUB>2</SUB>O)<SUB>2</SUB>(<I>NN</I>-deen)<SUB>2</SUB>]X<SUB>2</SUB>·<I>n</I>H<SUB>2</SUB>O (<I>NN</I>-deen is <I>N</I>,<I>N</I>-diethylethylene-diamine and X is Cl or Br) were investigated. It was found by derivatography and spectral and magnetic measurements that the bromide undergoes transformation from octahedral to square planar structure by "deaquation" upon heating, whereas the chloride turned to the dichloro complex by thermal "deaquation-anation" losing the coordinated water and drawing chloride ion into the coordination sphere with retention of octahedral structure around the central metal. No such transformation could be found in the corresponding iodide and nitrate, since only diamagnetic complexes, [Ni(<I>NN</I>-deen)<SUB>2</SUB>]X<SUB>2</SUB> (X is I or NO<SUB>3</SUB>), and no paramagentic complexes were obtained.

• 公益社団法人 日本化学会の論文

著者

• Uehara Akira

  Department Of Chemistry Faculty Of Science Kanazawa University

• Kyuno Eishin

  Department of Chemistry Faculty of Science Kanazawa University

• Tsuchiya Ryokichi

  Department of Chemistry, Faculty of Science, Kanazawa University

• Joba Seiji

  Department of Chemistry, Faculty of Science, Kanazawa University

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