Metal complexes of amino acids. IX. Carbon-13 nuclear magnetic resonances of cobalt(III) complexes.
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概要
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The <SUP>13</SUP>C NMR spectra of cobalt(III) complexes containing various amino acids as unidentate or bidentate ligands were measured. The relation between the coordination types and the changes of the chemical shifts was clarified. The changes of chemical shift on coordination of α-amino acid to cobalt(III) (NH<SUB>3</SUB><SUP>+</SUP>–R–COOH→NH<SUB>3</SUB><SUP>+</SUP>–R–COOCo) were about 7 and 1 ppm for the carboxy-carbon and α-carbon, respectively. On the other hand, those on chelation (NH<SUB>3</SUB><SUP>+</SUP>–R–COOH→chelated amino acid) were about 15 and 5 ppm for each carbon, respectively. However, the changes of chemical shift on chelation of β-alanine were different from those of α-amino acids.
- 公益社団法人 日本化学会の論文
著者
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Yasui Takaji
Faculty of Arts and Science, Kochi University
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Ama Tomoharu
Faculty of Arts and Science, Kochi University
関連論文
- Metal Complexes of Amino Acids. V. μ-Aminocarboxylato Bi- and Tri-nuclear Complexes of Cobalt(III)
- Metal complexes of amino acids. VIII. Carbon-13 nuclear magnetic resonances of cobalt(III) complexes containing L-aspartic and L-glutamic acids.
- Metal complexes of amino acids. IX. Carbon-13 nuclear magnetic resonances of cobalt(III) complexes.