High levels of ab initio molecular orbital theory have been used to study the structures, binding energies, vibrational frequencies and equilibrium constants of hydrogen peroxide-water dimers. The geometries of the different possible conformers were optimized at the HF/6-3 1 1 + + G (2d, 2p) level o
Molecular structure, vibrational frequencies and ionization potential of tin dihalides: An ab initio SCF and CI study
β Scribed by J.M. Ricart; J. Rubio; F. Illas
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 408 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The geometrical parameters for SnX, (X = Cl, Br, 1) and SnXl have been optimized at the SCF and CI levels using non-empirical pseudopotentials and a basis set of double-zeta plus polarization quality. For the neutral molecules the geometrical parameters are in agreement with the experimental values, the difference being of only 2%. Vibrational frequencies and ionization potentials are also in agreement wth experiment.
π SIMILAR VOLUMES
Ab initio molecular geometries and vibrational frequencies of various isolated vanadate species NO,"-, HVO;-, H2V0;, and V,O;-) were calculated using different pseudopotentials. The relative merits of these were assessed by comparing the calculated molecular parameters with the corresponding values
Ab-initio calculations using three large gaussian basis sets arc reported for the unstable molecule SF2. The cffcct on tbc energy and computed geometry of polarhation functions and their expcrnents is examined, and a variety of one4cciron propertics computed.
## Abstract The geometry, harmonic and anharmonic force fields, and fundamental vibrational frequencies of __cis__β and __trans__βthiolformic acid are studied __ab initio__ in the 4β31G basis set. An extensive comparison is made between changes in diagonal and offβdiagonal quadratic and cubic force