An infrared study of the competition between hydrogen-bond networking and ionic solvation:: Halide-dependent distortions of the water trimer in the X-•(H2O)3, (X = Cl, Br, I) systems

被引：125

作者：

Ayotte, P

Weddle, GH

Johnson, MA

机构：

[1] Yale Univ, Sterling Chem Lab, New Haven, CT 06520 USA

[2] Fairfield Univ, Dept Chem, Fairfield, CT 06430 USA

来源：

JOURNAL OF CHEMICAL PHYSICS | 1999年 / 110卷 / 15期

关键词：

D O I：

10.1063/1.478616

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Vibrational spectra of the water trimers solvating the halide anions (Cl-, Br-, I-) have been acquired in the OH stretching region by predissociation spectroscopy of the X- .(H2O)(3). Ar-3 complexes. These "wet" ions display two groups of bands assigned to normal modes of the (C-3) pyramidal structure. We interpret the evolution of the spectra down the halogens in the context of the rings closing up toward the structure of the bare (H2O)(3) neutral. This trend is discussed in terms of the disruptive effect of the ionic H bonds on the water network. (C) 1999 American Institute of Physics. [S0021-9606(99)02115-7].

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页码：7129 / 7132

页数：4

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