Three-dimensional "Mercedes-Benz" model for water.

Three-dimensional "Mercedes-Benz" model for water.
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水的三维“梅赛德斯-奔驰”模型。

DOI:
10.1063/1.3183935
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发表时间:
2009
期刊:
The Journal of chemical physics
影响因子:
--
通讯作者:
M. Karttunen
M. Karttunen
中科院分区:
--
文献类型:
--
作者:
Cristiano L. Dias;T. Ala‐Nissila;M. Grant;M. Karttunen

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在本文中,我们介绍了一个三维版本的梅赛德斯-奔驰模型来描述水分子。在这个模型中,货车德瓦尔斯相互作用和氢键明确地分别通过一个Lennard-Jones势和一个高斯取向相关的条款。在低温下,该模型冻结形成冰-I,它再现了水的实验径向分布函数的主峰。除了这些结构特性外,该模型还捕获了水的化学异常:异常密度分布,负热膨胀率,大热容和等温压缩率最小值。
In this paper we introduce a three-dimensional version of the Mercedes-Benz model to describe water molecules. In this model van der Waals interactions and hydrogen bonds are given explicitly through a Lennard-Jones potential and a Gaussian orientation-dependent terms, respectively. At low temperature the model freezes forming Ice-I and it reproduces the main peaks of the experimental radial distribution function of water. In addition to these structural properties, the model also captures the thermodynamical anomalies of water: The anomalous density profile, the negative thermal expansivity, the large heat capacity, and the minimum in the isothermal compressibility.
DOI: 10.1063/1.1808117
发表时间: 2004-11-22
影响因子: 4.4
作者:
Price, DJ;Brooks, CL
通讯作者: Brooks, CL