Using a gaussian Lobe basis set nearly cquivalcnt to the double-zeta Sl;lter type orbital basis set, the principal force constants and rhe derivatives of the electric dipole moment are nIcuIated. The force constants are found to be in scltisktory agreement with csperimentol
Ab initio MO calculation of force constants and dipole derivatives for the formamide dimer. An estimation of hydrogen-bond force constants
✍ Scribed by Marek J. Wójcik; Akiko Y. Hirakawa; Masamichi Tsuboi; Shigeki Kato; Keiji Morokuma
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 430 KB
- Volume
- 100
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Ab initio SCF h10 calculations (with the 4-31G basis set) have been carried out to determine the equilibrium Seometry, vibmtional frequencies, dipole-moment derivatives, and force constants for intermolecular modes of the formamide dimer and its d4 and d6 derivatives. The results are correlated with monomer calculations and experimental data for crystalline formamide.
📜 SIMILAR VOLUMES
The C=O bond length and fc=o,c=o, the corresponding harmonic stretching force constant, are calculated ab initio using the 4-31G basis set (augmented by polarization functions on the sulfur and chlorine) with full geometry optimization for the monosubstituted carbonyl compounds RCHO, where R = H, CH
Recewed 27 July 1981 Quadratic. cubic and quartic force constants assocmted v&h the proton bridge of F-H ..NCH. and derivatwes, up to thud order, of the electric &pole moment have been computed at the SCF level. 6-31 spht-valence and 00~6~) Dunning basis sets have been used to mvestigate the related
## Abstract The OH bond length and the quadratic, cubic, and quartic stretching force constants, calculated __ab initio__ using the unscaled 4‐31G basis set with full geometry optimization, are reported for 30 planar conformers of ten molecules contaning either the COH, NOH, or OOH group. The d