Receised 7 February -969 Distortional effects on the barrier to L?p?nal rotation of ethane x-e investigated through ab tnttto calculations. yielding a theoretical barrier of 3.071 kcal/mole (experimental 2.928 kcal/mole). The com-Lwted barrier is 3.064 kcal/moIe ior borazane and 1.44 kcal/mole for m
A study of the ethane internal rotation barrier
β Scribed by Philip A. Christiansen; William E. Palke
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 565 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
In an effort to deduce the source of the.cttine internalrotation barrier, we have investigated the contributions of exchange energy and orthogonzlity: ti4io effects that are required by the Pauli principle. Fully ~tisymm~~~e~, ~partially antisymmctrizcd and non-anti;:?nmetrized optimized orbital product wavefunctions were determined.
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π SIMILAR VOLUMES
Sasis sets. Minimum basis set calculations predict the barrier in ethyl fluoride to be 0.5 kcd/mole smaller than the ethzne barrier. Extended basjs set cdcufations give barriers of 3.4 and 3.3 kcal/mole for ethyl fluoride and ethane. These results are in better ;igrecment with the espcrimcntal value
Molecular orbital calculations of sixfold barriers in nitromethane, methyl boron difluoride, and trifluoronitromethane were performed by various HartreeαFock and electron correlation methods. In those calculations, staggered and eclipsed conformations are of primary concern. These results indicated
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