The activation enera of the SN2 reaction I?--t CII3F -KM3 + F-is found equal to 7.9 kcal/mole through ab initio calculations of the reactants and of the transition state [FCH3FJ-. This value results almost solely from the contribution of d-type polarization functions.
An ab initio relativistic calculation for (e113)2
β Scribed by C.P. Wood; N.C. Pyper
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 647 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
For a moiccule cant-g two heavy a.toms a method capable of pedommg full> 3b mitio fully relatwlsbc c&ulatmns bxed on the Duac equation 1s descriied and apphed to (El 13)~ The wavefunctlon 1s mainly composed of the covalent function constructed from the ground 78 configurations of the atoms although admixture of covalent functions built from 7p orbltak not mslgruficantJy lowers the energy Ioruc terms are ununportant.
π SIMILAR VOLUMES
The iodine clusters I2(1~-), i2(3Hu), 12 (25~) and 13 (~g), as well as excited states of I~-(2~+) and I3 (lEg), have been examined by means of different ab initio methods ranging from the SCF-HF to the QCISD(T) theoretical levels coupled with the relativistic effective core potential approach in a n