𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Ab initio calculations of molecules with efficient GTO basis sets

✍ Scribed by P. Russegger; H. Lischka; P. Schuster


Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
285 KB
Volume
12
Category
Article
ISSN
0009-2614

No coin nor oath required. For personal study only.

✦ Synopsis


Near HF energies un be obtained with smallGT0 basis sets and optimized functions in the centers of chemical bonds. Energy differences, force constants and charge distributions remein aknost unchangtxl, if the number of gaus- sian functions representing the cusp at the nuclei is reduced drastically. Three examples are discussed in detail: Hz, LiH and Lit.


πŸ“œ SIMILAR VOLUMES


Ab initio calculations on transition met
✍ L. Seijo; Z. Barandiaran; M. Klobukowski; S. Huzinaga πŸ“‚ Article πŸ“… 1985 πŸ› Elsevier Science 🌐 English βš– 236 KB

A group 01 small minimal GTO basis sc~5 was lested for a set or molecules containing first-and second-row transition metal atoms. The resul& are more uniform in quality Lhan Lhose obtained by the use 01 the STOJG basis sek.

Small gaussian basis sets for AB initio
✍ E.L. Mehler; C.H. Paul πŸ“‚ Article πŸ“… 1979 πŸ› Elsevier Science 🌐 English βš– 467 KB

Gausshn basis sets of (Ss, Zp) for carbon, nitrogen, and oxygen, and (7s. Ip) for phosphorous and sulfur hake been ds\eloped for ab initio calculations of biological molecules. Double zeta contracted bases are gRen for all five atoms\_ Minimum bases are given for carbon. nitrogen and oxygen, and a m

Basis set dependence of ab initio geomet
✍ Steven R. Ungemach; Henry F. Schaefer III πŸ“‚ Article πŸ“… 1976 πŸ› Elsevier Science 🌐 English βš– 299 KB

Theoretical predictions of AB4 molecular structures are very sensitive to choice of basis set. This has been previously demonstrated for the SH4 and SF4 molecules. Here it is shown that while both minimum and double zeta basis sets predict ClK$ to have a C4v structure, the addition of d functions on

Ab initio molecular orbital calculations
✍ Eugenia C. Garrett; Anthony S. Serianni πŸ“‚ Article πŸ“… 1990 πŸ› Elsevier Science 🌐 English βš– 531 KB

Ab initio molecular orbital calculations were performed on 2-deoxy-beta-D-glycero-tetrofuranose (1) using the 6-31G\* basis set to evaluate the effect of ring conformation on the molecular parameters (bond lengths, angles, and torsions). Geometric optimizations were conducted on the planar and ten e

Basis set effects and the choice of refe
✍ D. Michalska; L. J. Schaad; P. CΜ†arsky; B. Andes Hess Jr.; C. S. Ewig πŸ“‚ Article πŸ“… 1988 πŸ› John Wiley and Sons 🌐 English βš– 876 KB

Tatewaki and Huzinaga's [J. Comput. Chem. 1, 205 (198011 basis sets, constructed to minimize superposition error, were used to calculate infrared (IR) frequencies and intensities. They were found inferior to Pople bases such as 3-21G and 6-31G\*. The question of whether a theoretical vibrational spe