The Structure of Zinc Chloride Complexes in Aqueous Solution

M. Maeda; T. Ito; M. Hori; G. Johansson

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The Structure of Zinc Chloride Complexes in Aqueous Solution

机译：水溶液中氯化锌配合物的结构

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摘要

The structure of zinc chloride complexes with different ratios of chloride to zinc, formed in concentrated ZnCl_2 aqueous solutions, were determined from large-angle X-ray scattering using concentrations of the chloride complexes estimated by complementary Raman spectroscopic measurements. The highest chloro complex, [ZnCl_4]~(2-), is tetrahedral with a Zn-Cl bond length of 2.294(4) A. The trichloro complex, [ZnCl_3]~-, which coordinates one water molecule, is pyramidal with the Cl-Zn-Cl angle 111°. The Zn-Cl and the Zn-H_2O bonds are 2.282(4) and 1.9 A, respectively. The two lower complexes, [ZnCl_2] and [ZnCl]~+ , cannot be separated by Raman spectra. The average Zn-Cl distance in these complexes is 2.24 A, and the average Zn-H_2O distance is 1.9 A. In [Zn(H_2O)_6]~(2+) the Zn-H_2O distance is 2.15 A.

机译：在浓ZnCl_2水溶液中形成的氯化锌与锌之比不同的氯化锌络合物的结构，是通过大角度X射线散射法测定的，该氯射线络合物的浓度由补充拉曼光谱测量法估算得出。最高的氯配合物[ZnCl_4]〜（2-）是四面体，Zn-Cl键长为2.294（4）A。三氯配合物[ZnCl_3]〜-与一个水分子配位，与Cl-Zn-Cl角为111°。 Zn-Cl和Zn-H_2O键分别为2.282（4）和1.9A。较低的两个配合物[ZnCl_2]和[ZnCl]〜+不能通过拉曼光谱分离。这些配合物中的平均Zn-Cl距离为2.24 A，平均Zn-H_2O距离为1.9A。在[Zn（H_2O）_6]〜（2+）中，Zn-H_2O距离为2.15A。

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《Zeitschrift fur Naturforschung. A, A journal of physical sciences》 |1996年第2期|p.63-70|共8页
作者
M. Maeda; T. Ito; M. Hori; G. Johansson;
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作者单位

Department of Applied Chemistry, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466, Japan;

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正文语种 eng
中图分类物理学;
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X-ray diffraction; raman spectra; IR spectra; structures of zinc (Ⅱ) chloride complexes; structure of hydrated non-complexed zinc (Ⅱ) ion;

机译：X射线衍射;拉曼光谱;红外光谱;氯化锌（Ⅱ）配合物的结构;水合非络合锌（Ⅱ）离子的结构;

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The Structure of Zinc Chloride Complexes in Aqueous Solution

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