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- W2056551928 endingPage "6819" @default.
- W2056551928 startingPage "6811" @default.
- W2056551928 abstract "This paper contains a study of the pair and many-body interactions in cyclic water clusters: trimer, tetramer, and pentamer. Symmetry-adapted perturbation theory (SAPT) is applied to compute the pair- and three-body interactions directly and to analyze the individual electrostatic, induction, dispersion, and exchange contributions. The total interaction energies are also obtained by supermolecule coupled-cluster calculations including single, double, and noniterative triple excitations, CCSD(T). The three-body interactions contribute up to 28% of the total interaction energy in these water clusters in their equilibrium geometries and up to 50% of the barriers for different tunneling processes investigated in the trimer. The main three-body contribution is due to second- and third-order induction effects, but also three-body exchange effects are substantial. Dispersion contributions are only significant in the pair energy. The four-body effects are relatively small, and the five-body effects were found to be negligible. Furthermore, we tested the quality of various density functional methods for describing these many-body interactions." @default.
- W2056551928 created "2016-06-24" @default.
- W2056551928 creator A5030928179 @default.
- W2056551928 creator A5038941097 @default.
- W2056551928 creator A5040009005 @default.
- W2056551928 creator A5060407639 @default.
- W2056551928 date "1999-08-01" @default.
- W2056551928 modified "2023-10-18" @default.
- W2056551928 title "Hydrogen Bonding in Water Clusters: Pair and Many-Body Interactions from Symmetry-Adapted Perturbation Theory" @default.
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