Preparation and stereochemistry of cobalt(III) complexes with ethylenediamine-N-acetate and 3-azapentane-1,5-diamine or 3-methyl-3-azapentane-1,5-diamine.
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概要
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Four geometrical isomers possible in each of [Co(edma)(dien)]<SUP>2+</SUP> and [Co(edma)(mdien)]<SUP>2+</SUP>, where edma, dien, and mdien denote ethylenediamine-<I>N</I>-acetate, 3-azapentane-1,5-diamine, and 3-methyl-3-azapentane-1,5-diamine respectively, and facial isomer of [Co(edma)(NH<SUB>3</SUB>)<SUB>3</SUB>]<SUP>2+</SUP> were prepared and resolved into optically active isomers by a column-chromatographic method. The structural assignments of these geometrical isomers were carried out on the basis of the absorption, <SUP>1</SUP>H NMR, and <SUP>13</SUP>C NMR spectral data. The absolute configurations of the optically active isomers containing facially coordinated edma were determined by <SUP>1</SUP>H NMR measurements of the glycinate-ring methylene (–CHD–) of edma stereospecifically deuterated in a weak basic D<SUB>2</SUB>O. The relationship between the absolute configurations and the CD spectral behaviors of these isomers is also discussed.
- 公益社団法人 日本化学会の論文
著者
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Yasui Takaji
Department Of Chemistry Faculty Of Science Kochi University
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Ama Tomoharu
Department Of Chemistry Faculty Of Science Kochi University
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Koine Norio
Department Of Applied Chemistry Faculty Of Engineering Ehime University
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Kawaguchi Hiroshi
Department Of Applied Chemistry Faculty Of Engineering Utsunomiya University
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Shikiji Toshie
Department of Chemistry, Faculty of Science, Kochi University
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