He-, Ne-, and Ar-phosgene intermolecular potential energy surfaces

Cristian R. Munteanu, Christian Henriksen, Peter M. Felker, Berta Fernández

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Using the CCSD(T) model, we evaluated the intermolecular potential energy surfaces of the He-, Ne-, and Ar-phosgene complexes. We considered a representative number of intermolecular geometries for which we calculated the corresponding interaction energies with the augmented (He complex) and double augmented (Ne and Ar complexes) correlation-consistent polarized valence triple-ζ basis sets extended with a set of 3s3p2d1f1g midbond functions. These basis sets were selected after systematic basis set studies carried out at geometries close to those of the surface minima. The He-, Ne-, and Ar-phosgene surfaces were found to have absolute minima of -72.1, -140.4, and -326.6 cm -1 at distances between the rare-gas atom and the phosgene center of mass of 3.184, 3.254, and 3.516 Å, respectively. The potentials were further used in the evaluation of rovibrational states and the rotational constants of the complexes, providing valuable results for future experimental investigations. Comparing our results to those previously available for other phosgene complexes, we suggest that the results for Cl2-phosgene should be revised.
Original languageEnglish
JournalJournal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
Volume117
Issue number18
Pages (from-to)3835-3843
ISSN1089-5639
DOIs
Publication statusPublished - 2013

Keywords

  • Neon
  • Potential energy surfaces
  • Quantum chemistry
  • Chlorine compounds

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