Structures of cys-containing peptide complexes of Pd(II) in organic solvents.
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概要
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Cysteine-containing peptide (pep) complexes of Pd(II) have been synthesized and their structures in organic solvents such as dimethyl sulfoxide (Me<SUB>2</SUB>SO) and <I>N</I>,<I>N</I>-dimethylformamide (DMF) were examined by use of <SUP>1</SUP>H-, <SUP>13</SUP>CNMR, visible, and CD spectroscopies. In all cases of the Pd(II) complexes, only the thiolato group of the peptides coordinates to the metal. Upon mixing [PdCl<SUB>4</SUB>]<SUP>2−</SUP> and the peptide, a <I>trans</I>(<I>S</I>) isomer [PdCl<SUB>2</SUB>(pep)<SUB>2</SUB>]<SUP>2−</SUP> immediately forms, which gradually isomerizes to the <I>cis</I>(<I>S</I>) isomer at 20 °C in DMF. The reactivity of Pd(II)–S bonds in these complexes was examined by addition of 2,2′-bipyridyl, 2-mercaptoethanol, or 3,4-toluenedithiol.
- 公益社団法人 日本化学会の論文
著者
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Ueyama Norikazu
Department Oc Macromolecular Science Faculty Of Science Osaka University
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Nakamura Akira
Department Oc Macromolecular Science Faculty Of Science Osaka University
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Nakata Michio
Department of Macromolecular Science, Faculty of Science, Osaka University
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Sasaki Kazuko
Department of Macromolecular Science, Faculty of Science, Osaka University
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