Charge-Displacement Analysis of the Interaction in the Ammonia鈥揘oble Gas Complexes

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• 作者：Giovanni Bistoni ; Leonardo Belpassi ; Francesco Tarantelli ; Fernando Pirani ; David Cappelletti
• 刊名：Journal of Physical Chemistry A
• 出版年：2011
• 出版时间：December 29, 2011
• 年：2011
• 卷：115
• 期：51
• 页码：14657-14666
• 全文大小：1033K
• 年卷期：v.115,no.51(December 29, 2011)
• ISSN：1520-5215

文摘

We carry out an accurate ab initio study of the interaction between ammonia and the whole series of noble gas atoms and relate the results to those of high-resolution scattering experiments that provide access to the average radial dependence of the interaction potential. The charge-displacement calculations show that charge transfer is a non-negligible, strongly anisotropic, component of the interaction, governing some basic features of the potential energy surfaces especially for the heavier systems. A comparison is made with the analogous binary complexes of H₂O with the water鈥揌₂ system (Belpassi, L.; et al. J. Am. Chem. Soc.2010, 132, 13046), supporting the conclusion that charge transfer plays a peculiarly special role in water鈥檚 intermolecular interactions.