期刊
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
卷 107, 期 14, 页码 2817-2827出版社
WILEY
DOI: 10.1002/qua.21507
关键词
quantum chemical topology; atoms in molecules; electrostatic potential; multipole moments; molecular simulation; neural networks; polarization; charge transfer
The HF molecule is a simple polar system that serves as a prototype for developing new potentials. Here we build on earlier work [Liem and Popelier, J Chem Phys 2003, 119, 4560] in which a high-rank multipolar potential was used to simulate liquid HF. That work was the first example of high-rank multipole moments (up to hexadecapole) being employed in conjunction with multipolar Ewald summation in a molecular dynamics simulation. This potential is now extended with polarization, which is delivered by artificial neural networks. The neural nets predict how atomic multipole moments change as the position of neighboring molecules vary. This novel approach is successfully tested on the HF dimer in vacuum. (c) 2007 Wiley Periodicals, Inc.
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