Tunneling Splittings in Water Clusters from Path Integral Molecular Dynamics.
Tunneling Splittings in Water Clusters from Path Integral Molecular Dynamics.
复制标题
从路径积分分子动力学研究水簇中的隧道分裂。
DOI:
10.1021/acs.jpclett.9b02951
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Vaillant CL
中科院分区:
文献类型:
--
作者:
Vaillant CL
We present calculations of tunneling splittings in selected small water clusters, based on a recently developed path integral molecular dynamics (PIMD) method. The ground-rotational-state tunneling motions associated with the largest splittings in the water dimer, trimer, and hexamer are considered, and we show that the PIMD predictions are in very good agreement with benchmark quantum and experimental results. As the tunneling spectra are highly sensitive to both the details of the quantum dynamics and the potential energy surface, our calculations are a validation of the MB-Pol surface as well as the accuracy of PIMD. The favorable scaling of PIMD with system size paves the way for calculations of tunneling splittings in large, nonrigid molecular systems with motions that cannot be treated accurately by other methods, such as the semiclassical instanton.
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影响因子:
4.4
作者:
Mariko Takahashi;Yumiko Watanabe;T. Taketsugu;D. Wales
通讯作者:
D. Wales
DOI:
10.1063/1.5020426
发表时间:
2018-02
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Xiao-Gang Wang;T. Carrington
通讯作者:
Xiao-Gang Wang;T. Carrington
DOI:
10.1063/1.4943980
发表时间:
2016
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Mátyus E
通讯作者:
Mátyus E
影响因子:
5.5
作者:
C. L. Vaillant;S. Althorpe;D. Wales
通讯作者:
C. L. Vaillant;S. Althorpe;D. Wales
影响因子:
4.4
作者:
Groenenboom, GC;Wormer, PES;Szalewicz, K
通讯作者:
Szalewicz, K