Three-dimensional model calculation of torsional levels of (H2O)3 and (D2O)3

Dubravko Sabo, Zlatko Bacic, Thomas Bürgi, Samuel Leutwyler

Research output: Contribution to journalArticle

Abstract

A coupled three-dimensional model calculation of the low-frequency large-amplitude intermolecular torsional states in (H2O)3 and (D2O)3 is presented, based on the analytical modEPEN intermolecular potential surface and a three-dimensional discrete variable representation approach. The lowest torsional levels of both (H2O)3 and (D2O)3 lie above the sixfold (upd) torsional barrier. The first eight (eleven) torsions of (H2O)3 ((D2O)3) are pseudorotational states. The 'radial' and 'polar' torsional fundamental frequencies are predicted at 151 and 160 cm-1 for (D2O)3, and for (H2O)3 at 185.0 and 185.3 cm-1, respectively. Each of these in turn support a ladder of pseudorotational levels.

Original languageEnglish (US)
Pages (from-to)283-294
Number of pages12
JournalChemical Physics Letters
Volume244
Issue number3-4
DOIs
StatePublished - Oct 6 1995

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Ladders
three dimensional models
Torsional stress
ladders
torsion
low frequencies

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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Three-dimensional model calculation of torsional levels of (H2O)3 and (D2O)3 . / Sabo, Dubravko; Bacic, Zlatko; Bürgi, Thomas; Leutwyler, Samuel.

In: Chemical Physics Letters, Vol. 244, No. 3-4, 06.10.1995, p. 283-294.

Research output: Contribution to journalArticle

Sabo, Dubravko ; Bacic, Zlatko ; Bürgi, Thomas ; Leutwyler, Samuel. / Three-dimensional model calculation of torsional levels of (H2O)3 and (D2O)3 . In: Chemical Physics Letters. 1995 ; Vol. 244, No. 3-4. pp. 283-294.
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