Analytic ab initio -based molecular interaction potential for the BrO.H2O complex

Ross Hoehn, Sachin D. Yeole, Sabre Kais, Joseph S. Francisco

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Radical halogen oxide species play important roles within atmospheric processes, specifically those responsible for the removal of O3. To facilitate future investigations on this family of compounds, RCCSD(T)/aug-cc-pVQZ-level electronic structure calculations were employed to generate individual-molecule optimized geometries, as well as to determine the global minimum energy structure for the BrOâH2O complex. This information facilitated the generation of several one-dimensional potential energy surface (PES) scans for the BrOâH2O complex. Scans were performed for both the ground state and the first excited state; this inclusion is due to a low-lying first electronic excited-state energy. These rigid-geometry PES scans were used both to generate a novel analytic interaction potential by modifying the existing Thole-type model used for water and to the fitted potential function. This interaction potential features anisotropic atomic polarizabilities facilitating appropriate modeling of the physics regarding the unpaired electron residing within the p-orbitals of the oxygen atom of the bromine oxide radical. The intention of this work is to facilitate future molecular dynamics simulations involving the interaction between the BrO radical and water clusters as a first step in devising possible novel chemistries taking place at the water interface of clouds within the atmosphere.

Original languageEnglish
Article number204121
JournalJournal of Chemical Physics
Volume144
Issue number20
DOIs
Publication statusPublished - 28 May 2016

Fingerprint

Molecular interactions
molecular interactions
Potential energy surfaces
Excited states
Oxides
Water
potential energy
water
Bromine
Halogens
oxides
Geometry
interactions
bromine
geometry
halogens
Ground state
excitation
Electronic structure
Molecular dynamics

ASJC Scopus subject areas

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

Cite this

Analytic ab initio -based molecular interaction potential for the BrO.H2O complex. / Hoehn, Ross; Yeole, Sachin D.; Kais, Sabre; Francisco, Joseph S.

In: Journal of Chemical Physics, Vol. 144, No. 20, 204121, 28.05.2016.

Research output: Contribution to journalArticle

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