Abstract
Fully optimized SCF wavefunctions using minimum Slater-type basis sets have been obtained for BH3, NH3, C2H2, C2H4, HCN, and H2CO. Calculations employing anisotropic minimum basis sets are reported for NH3, H2O, HCN, and H2CO. The lower SCF energies of the calculations for anisotropic sets are primarily due to a reduction in electron–electron repulsion. Improvements in calculated dipole moments occur when independent p-orbital components are used to describe lone pairs and covalent bonds. A geometry-optimized calculation for H2O is also reported.
Keywords
Affiliated Institutions
Related Publications
Self-Consistent Molecular-Orbital Methods. I. Use of Gaussian Expansions of Slater-Type Atomic Orbitals
Least-squares representations of Slater-type atomic orbitals as a sum of Gaussian-type orbitals are presented. These have the special feature that common Gaussian exponents are ...
A systematic theoretical study of the harmonic vibrational frequencies for polyatomic molecules: The single, double, and perturbative triple excitation coupled-cluster [CCSD(T)] method
Analytic gradient methods have been used to predict the harmonic vibrational frequencies and the infrared (IR) intensities of HCN, HNC, CO2, CH4, NH4+, C2H2, H2O, H2CO, and NH3 ...
Self-Consistent Procedures for Generalized Valence Bond Wavefunctions. Applications H3, BH, H2O, C2H6, and O2
Methods of efficiently optimizing the orbitals of generalized valence bond (GVB) wavefunctions are discussed and applied to LiH, BH, H3, H2O, C6H6, and O2. The strong orthogonal...
The balance between theoretical method and basis set quality: A systematic study of equilibrium geometries, dipole moments, harmonic vibrational frequencies, and infrared intensities
Analytic gradient methods have been used to predict the equilibrium geometries, dipole moments, harmonic vibrational frequencies, and infrared (IR) intensities of HCN, HNC, CO2,...
Electronic Structure of N2, CO, and BF
Approximate Hartree—Fock calculations are reported for the 1Σ+ ground states of the isoelectronic 14-electron molecules N2, CO, and BF. In each case calculations have been carri...
Publication Info
- Year
- 1969
- Type
- article
- Volume
- 51
- Issue
- 12
- Pages
- 5229-5235
- Citations
- 67
- Access
- Closed
External Links
Social Impact
Social media, news, blog, policy document mentions
Citation Metrics
Cite This
Identifiers
- DOI
- 10.1063/1.1671937