Ab initio study of the (H2O...HF)n, n = 1 - 5, complexes

Natalja A. Zvereva

doi:10.1117/12.375364

25 January 2000 Ab initio study of the (H₂O...HF)_n, n = 1 - 5, complexes

Natalja A. Zvereva

Proceedings Volume 4063, 13th Symposium and School on High-Resolution Molecular Spectroscopy; (2000) https://doi.org/10.1117/12.375364
Event: 13th Symposium and School on High-Resolution Molecular Spectroscopy, 1999, Tomsk, Russian Federation

Abstract

The equilibrium structures and molecular properties of S₀ and S₁ states of (H₂O...HF)_n, n equals 1 - 5, complexes were calculated at ab initio SCF and ROHF levels with use of the MONSTERGAUSS program. Analysis of electron density distribution for S₀ and S₁ states were performed. The excitation energies of S₀ yields S₁ transitions for (H₂O...HF)_n, n equals 1 - 5, complexes were determined. The influence of hydrogen bond formation on the shift in the maximum of first absorption band of these complexes was examined. The investigations of electronic excited states of molecules allow solving some analytical problems. One of them it is a problem about identification of substances. In virtue of data about electronic excited states it is possible to carry out a study of photophysical and photochemical processes what take place after photon absorption. From an analysis of experimental data follow that formation of intermolecular hydrogen bond results in the shifts of absorption bands. The shift depends from type of electronic transition. The investigation of the nonrigid molecular complexes is important for atmospheric spectroscopy purposes.

Citation Download Citation

Natalja A. Zvereva "Ab initio study of the (H₂O...HF)_n, n = 1 - 5, complexes", Proc. SPIE 4063, 13th Symposium and School on High-Resolution Molecular Spectroscopy, (25 January 2000); https://doi.org/10.1117/12.375364

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