| Autor: |
Inomata, Yoshie, Inomata, Tadaaki, Moriwaki, Takao |
| Zdroj: |
Bulletin of the Chemical Society of Japan; April 1974, Vol. 47 Issue: 4 p818-824, 7p |
| Abstrakt: |
The infrared absorption spectra of Dl-tyrosine and six metal Dl-tyrosine chelates have been investigated from 4000 to 300 cm-1. 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 transconfiguration; 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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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