Melting of the water hexamerстатья
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Дата последнего поиска статьи во внешних источниках: 18 октября 2018 г.
Авторы:
Belega E.D. ,
Trubnikov D.N. ,
Cheremukhin E.A.
Журнал:
Journal of Structural Chemistry
Том:
56
Номер:
1
Год издания:
2015
Издательство:
Maik Nauka/Interperiodica Publishing
Местоположение издательства:
Russian Federation
Первая страница:
52
Последняя страница:
57
DOI:
10.1134/S0022476615010084
Аннотация:
Results are presented for a molecular dynamics simulation of melting of the water hexamer from three-dimensional configurations (the book, cage, and prism isomers). The interactions between water molecules are described using two rigid potentials-TIP4P and TIP5P. The isomer geometry is determined using the connectivity matrix of the H-bond network graph. It is found in a numerical experiment that the Lindemann index, which shows the fluctuations in the length of intermolecular bonds, behaves similarly for all the studied initial isomers of the cluster. The melting of the cluster is found to depend on the interaction potential used in the study. For the cluster’s full energy, regions are identified which can be attributed to the premelting phase, which is dominated by the book isomer for TIP4P and ring isomer for TIP5P. The energy region attributed to the quasi-liquid phase of the cluster is shown to be characterized by isomers with ring and linear structures for both of the potentials. © 2015 Pleiades Publishing, Ltd.
Добавил в систему:
Трубников Дмитрий Николаевич