Path-integral molecular dynamics simulations of hydrated hydrogen chloride cluster HCl(H2O)4 on a semiempirical potential energy surface

被引:16
|
作者
Takayanagi, Toshiyuki [1 ]
Takahashi, Kenta [1 ]
Kakizaki, Akira [1 ]
Shiga, Motoyuki [2 ]
Tachikawa, Masanori [3 ]
机构
[1] Saitama Univ, Dept Chem, Sakura Ku, Saitama 3388570, Japan
[2] Japan Atom Energy Agcy, Ctr Computat Sci & E Syst, Taito Ku, Tokyo 1100015, Japan
[3] Yokohama City Univ, Int Grad Sch Arts & Sci, Quantum Chem Div, Kanazawa Ku, Yokohama, Kanagawa 2360027, Japan
关键词
Path-integral molecular dynamics simulation; Hydrated hydrogen chloride cluster; Semiempirical MO theory; PM3-MAIS; Quantum effect; HYPERSPHERE SEARCH METHOD; AB-INITIO; WATER CLUSTERS; INFRARED-SPECTRA; PROTON-TRANSFER; HCL; ICE; DISSOCIATION; MODEL; HF;
D O I
10.1016/j.chemphys.2009.01.014
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
Path-integral molecular dynamics simulations for the HCl(H2O)(4) cluster have been performed on the ground-state potential energy surface directly obtained on-the-fly from semiempirical PM3-MAIS molecular orbital calculations. It is found that the HCl(H2O)(4) cluster has structural rearrangement above the temperature of 300 K showing a liquid-like behavior. Quantum mechanical fluctuation of hydrogen nuclei plays a significant role in structural arrangement processes in this cluster. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:196 / 202
页数:7
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