The use of the mulliken approximation in bond-bond pair potentials describing rotational barriers
✍ Scribed by Péter R. Surján
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 268 KB
- Volume
- 117
- Category
- Article
- ISSN
- 0009-2614
No coin nor oath required. For personal study only.
✦ Synopsis
Possible sources of the error compensation effect of the Mull&en approximation for 1ocallLBd bond orbItal overlap densities are discussed in terms of Ruedenberg's expansion. The Mullken approximalion has hen applied previously for one-and two-electron imegrals to simplify bond-bond pair potentials which descnbe barriers 10 internal relation around single bonds.
📜 SIMILAR VOLUMES
The Boys-Reeves Cl algorithm has been applied in a CNDO/?. framework to study the bonding in the cyclopropylmethyi cation. 1n:erpretive use is made of the fact that the CI algorithm is identical to a v;llence bond calculation except for the restriction to orthonormal one-electron orbit&. A pseudo-n
## Abstract A variety of 1,1,4,4‐tetraal kynylbutatrienes and 1,4‐dialkynylbutatrienes was synthezized by dimerization of the corresponding gem‐dibromoolefins. Both ^1^H and ^13^C NMR spectroscopy indicated that the di‐ and tetraalkynylated butatrienes are formed as a mixture of __cis__ and __trans
## Abstract ^13^C NMR was used to study the __cis‐trans__ isomerization of 1‐[(2__S__)‐3‐mercapto‐2‐methyl‐1‐oxopropyl]‐L‐proline (captopril) in D~2~O solution over the temperature range 50–100°C. Measurements of the rate of __cis‐trans__ interconversion were made by line‐shape analysis and saturat