Infrared Absorption Spectra and Normal Coordinate Analysis of Metal-DL-Tyrosine Chelates
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概要
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The infrared absorption spectra of DL-tyrosine and six metal DL-tyrosine chelates have been investigated from 4000 to 300 cm<SUP>−1</SUP>. A detailed normal coordinate analysis was performed for the metal chelates as a 39-body problem and an approximate description of the vibrational modes has been assigned to the observed frequencies. DL-Tyrosine chelates are found to be coordinated with the metal through nitrogen and oxygen and to have a <I>trans</I> configuration; the same is true for other aliphatic amino acid chelates. The bond-stretching force constants for the metal-nitrogen bonds have been found to decrease in the order Pd(II)>Cu(II)>Zn(II)>Cd(II)>Ni(II)>Co(II). The calculated frequencies, which were obtained using the same force constants as in other aliphatic amino acid chelates, were in good agreement with the observed frequencies.
- 公益社団法人 日本化学会の論文
著者
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Inomata Yoshie
Department of Chemistry, Faculty of Science and Technology, Sophia University
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Inomata Tadaaki
Department of Chemistry, Faculty of Science and Technology, Sophia University
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Moriwaki Takao
Department of Chemistry, Faculty of Science and Technology, Sophia University
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