We present in this paper a mapping of t&tic ttnee-dimmsiond Born-Oppenheimer potential enera 'surfaces Y for ivhich'all arrangement ckumels are r-presented evenhandedI)-. This representation is very USefUl for viwalizing the geometical and dynamical properties of such surfaces..
A useful triangular plot of triatomic potential energy surfaces
โ Scribed by A.J.C. Varandas
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 585 KB
- Volume
- 138
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
A triangular plot of triatomlc potential energy surfaces is suggested in which the hidden coordinate -the perimeter of the molecule or the sum of squares of the three bond distances -is allowed to relax in order to give the lowest potential energy. This graphIcal representation preserves the full permutational symmetry of the problem. Examples are presented for the H, and HO2 systems.
๐ SIMILAR VOLUMES
A program has been developed in order to fit analytical power series expansions (Dunham, Simon-Parr-Finlan, Ogilvie and their exponential variants) and Padรฉ approximants to discrete ab initio potential energy surfaces of non-linear triatomic molecules. The program employs standard least-squares fitt
A coordinate representation for a polenlial energy surface is derived usmg the semiclassical hmil of the algebrax Hamihonian This provides a direct route rrom the observed ovenone spectrum IO a potential. The limilalions of this potenual are noted. Applicallons lo HCN. H,O. SO2 and 0, are reported.
The Wall-Porter method of rotating a hlorse function to construct poiential energy surfaces for colLnez~ atom-diatom chemical reactions is modified by using a numerical spline interpolation technique. This procedure is shown to have BP-at fk.uibility in giving a potential surface desired characteris
An inversion procedure for obtaining a local stretching/bending three-mode potential for the CO2 molecule is outlined, and a FORTRAN program for implementing this procedure is presented. The technique is a general one, and should be applicable to any small molecule for which adequate vibration/rotat