Preparation and characterization of (Co(acetylacetonato)(diamine or 2,2'-bipyridyl)(aminoalkylphosphine))2+. Crystal structure of (+)5C3D1-.LAMBDA.-fac(N)-(acetylacetonato){(1R,2R)-1,2-cyclohexanediamine}{(2-aminoethyl)diphenylphosphine}cobalt(III) perchl

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• Nine new cobalt(III) complexes of the types, [Co(acac)(L)(edpp)]<SUP>2+</SUP> (L=ethylenediamine(en), (1<I>R</I>,2<I>R</I>)-1,2-cyclohexanediamine(<I>RR</I>-chxn), 2,2′-bipyridyl(bpy)), [Co(acac)(L′)(empp)]<SUP>2+</SUP> (L′=en, bpy), and structurally related [Co(acac)(bpy)(en)]<SUP>2+</SUP> were prepared and resolved into optical isomers, where acac, edpp, and empp denote an acetylacetonate ion, (2-aminoethyl)diphenylphosphine, and (2-aminoethyl)methylphenylphosphine, respectively. The molecular structure of (+)<SUB>531</SUB><SUP>CD</SUP>-[Co(acac)(<I>RR</I>-chxn)(edpp)](ClO<SUB>4</SUB>)<SUB>2</SUB> was determined by single-crystal X-ray analysis. Crystal data; monoclinic, P2<SUB>1</SUB>, <I>a</I>=19.562(3)Å, <I>b</I>=16.882(1)Å, <I>c</I>=9.696(1)Å, β=91.22(1)°, <I>V</I>=3201.3(6)Å<SUP>3</SUP>, <I>Z</I>=4. Three nitrogen donor atoms in the complex ion are arranged in the facial mannar (<I>fac</I>(<I>N</I>)) and the absolute configuration of the complex ion is <I>Λ</I>. The structures of other complexes were assigned by comparing the <SUP>1</SUP>H NMR and circular dichroism spectra with those of the <I>fac</I>(<I>N</I>)-<I>Λ</I>-[Co(acac)(<I>RR</I>-chxn)(edpp)]<SUP>2+</SUP> complex. The complexes containing a 1,2-diamine yielded selectively the <I>fac</I>(<I>N</I>) isomer, whereas those containing bpy the <I>mer</I>(<I>N</I>) isomer.

• 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

• Takata Masakazu

  Department Of Orthopedic Surgery University Of Occupational And Environmental Health School Of Medic

• Fujita Junnosuke

  Department of Chemistry Faculty of Science Osaka University

• Ito Tasuku

  Department of Applied Molecular Science, Institute for Molecular Science

• Ito Haruko

  Department of Applied Molecular Science, Institute for Molecular Science, Okazaki National Research Institutes

• Ito Haruko

  Department of Applied Molecular Science, Institute for Molecular Science

• Takata Masakazu

  Department of Chemistry, Faculty of Science, Nagoya University

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