The rotatxonal energy btier in carbonyIyiide CH~OCH~ IS studied using RHF CI calculations J&pending on the sizi, of the CS and the basis set (STO-3G and 4-31G), values m the iange 13-17 kcal/molare found. At this level of calcuhtion. the rmd-point of the isomenzatzon process can be mainly described
Rotational barriers in the guanidinium ion: an ab initio study
β Scribed by Joseph F Captaini; L Pedersen
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 294 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Ab initio molecular orbital calculations are performed on the guanidmium ion using the STO-3G and 4-3 1G basis sets. Values for the single. double, and tripte rigid barriers of rotation, aiong with values for the geometry optimized single barrier of rotation are obtained. In addition, molecular orbital contributions, net atomic charges and bond orders are included.
π SIMILAR VOLUMES
## Abstract SCF HartreeβFock calculations are used to predict properties of the guanidinium fragment present in tetrodotoxin and saxitoxin, toxins known to block the sodium channels of the nerve cell membrane. The results, in terms of net atomic charges and geometries, are compared to similar calcu
The heights of the rotational barn-ers of the diselenide bridge in dimethyl diselenide have been calculated at the Hartree-Fock level with the 3-21G basis set. The minimum in the rotational potential energy function occurs at a torsional angle of 85.64". The bam'ers were determined by complete geome
The heights of the rotational barriers of the ditelluride bridge in H 2 Te 2 and (CH 3 ) 2 Te 2 have been calculated at the Hartree-Fock level with the 3-21G basis set. The minima in the rotational potential energy functions occur at torsional angles of 87.58Π and 89.32Π, respectively. The barriers