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• Molecular structures of <I>cis</I>-[Co(CN)<SUB>2</SUB>(acac)(dppe)] (<B>a</B>) and <I>trans</I>(<I>C</I>,<I>N</I>)-[Co(CN)<SUB>2</SUB>(acac)(edpp)]·H<SUB>2</SUB>O (<B>b</B>) have been determined by X-ray analysis, where acac, dppe, and edpp denote an acetylacetonate ion, 1,2-bis(diphenylphosphino)ethane and (2-aminoethyl)diphenylphosphine, respectively. Crystal data for <B>a</B>: monoclinic, <I>P</I>2<SUB>1</SUB>⁄<I>a</I>, <I>a</I>=13.975(2), <I>b</I>=19.709(2), <I>c</I>=11.575(2) Å, β=109.71(1)°, <I>V</I>=3001.5(6) Å<SUP>3</SUP>, <I>Z</I>=4, and <I>R</I>=0.049. Crystal data for <B>b</B>: monoclinic, <I>P</I>2<SUB>1</SUB>⁄<I>c</I>, <I>a</I>=17.870(3), <I>b</I>=7.354(2), <I>c</I>=16.709(3) Å, β=105.45(2)°, <I>V</I>=2116.5(5) Å<SUP>3</SUP>, <I>Z</I>=4, and <I>R</I>=0.056. The Co–O bonds trans to the phosphine and the cyanide ligands are longer, respectively, by ca. 0.06–0.08 Å and ca. 0.03–0.05 Å than those usually found in Co(III)–acac complexes such as [Co(acac)<SUB>3</SUB>], indicating stronger trans influence of the former than the latter.

• 公益社団法人 日本化学会の論文

著者

• KASHIWABARA Kazuo

  Department of Chemistry, Faculty of Science, Nagoya University

• Kashiwabara Kazuo

  Department Of Chemistry Faculty Of Science Nagoya University

• Fujita Junnosuke

  Department of Chemistry Faculty of Science Osaka University

• Kita Masakazu

  Department of Chemistry, Faculty of Science, Nagoya University

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