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
Ab initio calculations of the rotational barrier in PH4NH2
โ Scribed by James M. Howell
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 445 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The nature of the rotational barrier in substituted phosphoranes has been investigated by ab initio calculations of P&NH2 using gaussian expansions of Slater orbitals. The conformation with the amino group's lone pair lying in the equatorial plane of the phosphorsne system was favored by 2 1.0 kcallmole without using d orbitals and
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Ab initio calculations have been used to determine the structural parameters of both the planar and the orthogorial form of H~BNHz. The BN bond hngths were found to be 1.378 A and 1.469 A, respectively. The arrangement about nitrogen is pyramidal in the orthogonal form, The best estimate of the barr
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
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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 87.58ะ and 89.32ะ, respectively. The barriers