𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Study of the quality of Gaussian basis sets for carbon and silicon: Calculations on methane and silane

✍ Scribed by R. Daudel; R. A. Poirier; J. D. Goddard; I. G. Csizmadia


Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
417 KB
Volume
15
Category
Article
ISSN
0020-7608

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

A number of Gaussian basis sets for carbon and silicon have been examined in terms of the one‐electron properties of methane and silane. The convergence of the properties to their limiting values is not monotonic but, in general, a representation that involves five Gaussian functions per occupied atomic orbital on the heavy atom is sufficient to closely approach the limits. A relationship between the sizes and partitioned electronic energies is shown to hold to a good approximation for the Boys spatially localized molecular orbitals employed in this study.


πŸ“œ SIMILAR VOLUMES


Uniform quality gaussian basis sets for
✍ Raymond Daudel; Raymond A. Poirier; Imre G. Csizmadia πŸ“‚ Article πŸ“… 1982 πŸ› John Wiley and Sons 🌐 English βš– 483 KB

## Abstract Energy optimization (Eo) and property optimization (PO) were performed on the H~2~O molecule. A definition of the β€œoptimality” ΞΊ, a dimensionless quantity of the form has been proposed where Ο‰~i~ is a weighting factor, γ€ˆΗ’γ€‰~i~ is the computed observable, and __O__~i~ is the correspondin

MO SCF studies of the protonation of car
✍ S. ForsΓ©n; B. Roos πŸ“‚ Article πŸ“… 1970 πŸ› Elsevier Science 🌐 English βš– 528 KB

Ab initio MO SCF calculations using gaussian basis functions have been performed to study the protonation of carbon monoxide and the nitrogen molecule. The geometry of the protonated species has been investigated in some detail. The calculated pratan affinities are 118 kcal/mole for N3 and 13'7 kcal

On the relative importance of core and v
✍ Paul G. Mezey; Ch. V. S. Ramachandra Rao πŸ“‚ Article πŸ“… 1980 πŸ› John Wiley and Sons 🌐 English βš– 519 KB

## Abstract Several β€œcore‐deficient” small Gaussian basis sets were constructed and analyzed in terms of the balance requirements of functions that contribute predominantly to the core. Variations in the conformational energy barriers and geometrical parameters for ammonia and ethane, calculated wi

A study of the performance of numerical
✍ Julianna A. Altmann; Nicholas C. Handy; Victoria E. Ingamells πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 869 KB

The performance of numerical basis sets in relation to Gaussian basis sets is examined, by studying 20 small sulfur-containing molecules. The results of geometry optimization calculations are reported for each molecule using both density functional and Hartee-Fock methods. In comparison with experim

Ab initio calculations on sulfur-contain
✍ R. A. Poirier; R. Daudel; P. G. Mezey; I. G. Csizmadia πŸ“‚ Article πŸ“… 1982 πŸ› John Wiley and Sons 🌐 English βš– 462 KB

## Abstract Uniform quality basis sets (UQ‐NG; __N__=3, 4, 5), with __s__ = __p__ and __s__ β‰  __p__, and a 6‐31 __G__^\*^ basis set have been optimized for the sulfur atom. These uniform quality basis sets in their uncontracted and contracted forms were used, together with other basis sets reported