Ab initio calculations at the Hartree-Fock, MP2 and MP4 levels were performed to find structures of the equilibrium and transition states and the reaction energies and energies of activation of several competing reaction pathways of O (3P)+CH3SH. A 6-31G\* basis set was used in all calculations. The
A theoretical study of the reaction of P+ with water: Potential energy surfaces and reaction dynamics
✍ Scribed by Jesús R. Flores; Pilar Redondo
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 658 KB
- Volume
- 230
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Accurate ab initio computations have been carried out on the minima and saddle points involved in the dynamics of the reaction of P+ with water using a slightly modified version of G 1 and G2 theories (J. Chem. Phys. 94 ( 199 1) 43 1 S ). In addition, an approximate classical trajectory method and RRKM theory (Progr. Energy Combust. Sci. f 8 ( 1992) 75 ) have been employed
to study the dynamics of such a reaction. The results indicate that intersystem crossing must take place giving HPOH+ ('A'), which could be the intermediate responsible for the production of both PO'( 'Z+ ) + H2( 'Cz ) and POHf ( 2A') +H(*S).
📜 SIMILAR VOLUMES
MNDO molecular orbital calculations have been employed to investigate limited reaction pathways and potential energy surfaces for a series of S , 2 reactions. Model calculations for X-+ CH,X ( X = H, F, OH, OCH,, and CN) indicate that the MNDO method gives qualitative agreement with ab initio studie
The dynamics of the reaction of P' with methane were studied by means of a combination of an approximate classical trajectory method and RRKM theory, using accurate ab initio computations of the relevant minima and saddle points of the lowest singlet and triplet potential energy surfaces. The result
The two lowest potential energy surfaces for C(3p)+ NO(2II) have been investigated. The stationary points were first located using CASSCF gradient calculations and the geometries reoptimized using complete active space second-order perturbation theory. Zero-point corrections have been included in th
## Abstract For Abstract see ChemInform Abstract in Full Text.
Optimised geometries and harmonic vibrational frequencies for possible products and intermediates of the reaction of BH2 with NO, calculated at the HF/6-31G\* level of theory, are presented. Energies calculated using these optimised geometries at the HF, MP2 and MP4SDQ levels of theory are given.