The X-ray structure of bis((S,S)-2,4-pentanediamine)platinum(II) ion, [Pt(SS-ptn)2]2+.
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概要
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The bis((<I>S</I>,<I>S</I>)-2,4-pentanediamine)platinum(II) chloride monohydrate crystallizes in the space group P2<SUB>1</SUB>2<SUB>1</SUB>2<SUB>1</SUB> with four formula units in a unit cell of dimensions <I>a</I>=12.089(3), <I>b</I>=13.547(3), <I>c</I>=10.697(2) Å. The crystal structure has been determined from diffractometer data and refined to R=0.052 for 1903 independent reflections. The Pt atom has a square planar coordination by four N atoms, the average value of the Pt-N distance being 2.05 Å. The complex has a pseudo two-fold axis which is perpendicular to the coordination plane defined by the four N atoms. The 6-membered chelate ring is of a chair conformation and one methyl group is axial with respect to the chelate ring, while the other is equatorial. From a comparison of the circular dichroism spectra of the diammine-(<I>S</I>,<I>S</I>)-2,4-pentanediamineplatinum(II) and the bis((<I>S</I>,<I>S</I>)-2,4-pentanediamine)platinum(II) ions, the effect of the (<I>S</I>,<I>S</I>)-2,4-pentanediamine on the rotatory strength of the Pt(II) complex has been found to be not additive.
- 公益社団法人 日本化学会の論文
著者
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Kuroya Hisao
Department of Chemistry, Okayama University of Science
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Nakayama Yasuji
Department of Chemistry, Faculty of Science, Osaka City University
関連論文
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