The crystal and molecular structure of the aquabis(cyclo-L-histidyl-L-histidylato)dicopper(II) perchlorate hydrate [H2O Cu2(C12H13N6O2)2](ClO4)2 3.5H2O.

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概要

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• The crystal structure of the title compound has been determined by a three-dimensional X-ray structure analysis, using 4563 counter intensity data. The crystals are monoclinic, with <I>a</I>=22.97(2), <I>b</I>=15.89(1), <I>c</I>=10.00(1) Å, β=100.1(1)°, space group P2<SUB>1</SUB>, and <I>Z</I>=4. The structure was solved by the Patterson and Fourier technique and was refined by the block-diagonal least-squares method to <I>R</I>=0.061. The unit cell contains two crystallographically independent complex cations, the structure of which are very similar to each other. The complex cation is dimeric; there are two Cu atoms, and each of the two cyclo-L-histidyl-L-histidylato ligands bridges two metal atoms. Except for the aqua ligand, the main body of the complex has an approximate twofold axis which passes through the two metal atoms and relates the ligands to each other. The two Gu atoms have different coordination geometries. One Gu atom has a flattened tetrahedral coordination by 4N atoms, whereas the other is surrounded by 2N and 3O atoms and is intermediate between the square pyramid and the trigonal bipyramid.

• 公益社団法人 日本化学会の論文

著者

• Hirotsu Ken

  Department Of Chemistry Faculty Of Science Osaka City University

• Matsumoto Keiji

  Department Of Applied Physics Graduate School Of Engineering Yokohama National University

• Kojima Yoshitane

  Department Of Chemistry Faculty Of Science Osaka City University

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