Potentials interpolated with potentials: The six-dimensional B̃ state surface of thiophosgene

B. Strickler, M. Gruebele

Research output: Contribution to journalArticlepeer-review

Abstract

We present a new method for fitting potential energy surfaces (PESs), which combines the compactness of analytical fits with the flexibility of interpolation. In essence, potentials are interpolated with potential-shaped interpolation functions. Numerically efficient global PESs are constructed from a few interpolation points, updated as new regions are sampled, and easily constrained by spectroscopic and thermodynamic data. As an application, we compute an interpolated potential surface for the B̃ state of thiophosgene, which combines CASSCF calculations with refinement based on experimental vibrational frequencies and tunneling splittings.

Original languageEnglish (US)
Pages (from-to)137-145
Number of pages9
JournalChemical Physics Letters
Volume349
Issue number1-2
DOIs
StatePublished - Nov 23 2001

ASJC Scopus subject areas

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

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