## Abstract Pseudopotential theory is introduced into the __ab initio__ FSGO molecular fragment method. Pseudopotential molecular fragments using pseudopotentials of double‐zeta quality are characterized, and a method of their assembly into larger molecules is presented. Core–valence electron separ
Ab initio molecular fragment calculations with pseudopotentials. Some fragments containing nitrogen and oxygen
✍ Scribed by R. Gáspár Jr.; R. Gáspár
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 145 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
Abstract
Parameters for the OH (sp^2^) and NH~3~ (planar, sp^2^) pseudopotential–FSGO molecular fragments have been established in this paper. Calculations for the molecules of formic acid, formaldehyde, and formamide show good agreement with experiment.
📜 SIMILAR VOLUMES
## Abstract Pseudopotential theory is introduced into the __ab initio__ FSGO molecular fragment method. A theoretical background for the pseudopotential fragment description and a method for large molecule formation is presented. Core‐valence electron separation is achieved at both levels of the ca
## Abstract New psudopotentials of higher quality have been used in __ab initio__ molecular calculations. Simple molecular systems like Li~2~, LiH, and BeH~2~ have been investigated with varying basis sets. Energy, geometrical parameters, and dipole moments have been determined. The convergence pro
## Abstract Calculations with pseudopotentials of double‐zeta quality have been performed on ethylene, acetylene, and water molecules. A description of the carbon–carbon double and triple bonds is presented in the framework of the pseudo‐FSGO method. A possible model of the oxygen lone pairs has be