Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Structures, Molecular Orbital Properties and Vibrational Spectra of the Homo- and Heterodimers of Sulphur Dioxide and Ozone. An Ab Initio Study

Version 1 : Received: 29 September 2020 / Approved: 30 September 2020 / Online: 30 September 2020 (18:36:52 CEST)

How to cite: Ford, T.A. The Structures, Molecular Orbital Properties and Vibrational Spectra of the Homo- and Heterodimers of Sulphur Dioxide and Ozone. An Ab Initio Study. Preprints 2020, 2020090763 (doi: 10.20944/preprints202009.0763.v1). Ford, T.A. The Structures, Molecular Orbital Properties and Vibrational Spectra of the Homo- and Heterodimers of Sulphur Dioxide and Ozone. An Ab Initio Study. Preprints 2020, 2020090763 (doi: 10.20944/preprints202009.0763.v1).

Abstract

The structures of a number of dimers of sulphur dioxide and ozone have been optimized by means of a series of ab initio calculations. The dimer species have been classified as either genuine energy minima or transition states of first or higher order, and the most probable structures consistent with the experimental data have been confirmed. The molecular orbitals engaged in the interactions resulting in adduct formation have been identified and relations between the orbitals of the dimers of the valence isoelectronic monomer species examined. The vibrational spectra of the most probable structures have been computed, and compared with those reported in the literature, particularly with spectra observed in cryogenic matrices. The calculations have been extended to predict the properties of a number of possible heterodimers formed between sulphur dioxide and ozone.

Subject Areas

ab initio; sulphur dioxide; ozone; dimers; complexes; structures; vibrational spectra.

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