Abstract
Theoretical investigations are carried out on the reaction multi-channel CH3COCH3 + Cl (R1) and CH3 COCH3 + CH3 (R2) by means of direct dynamics methods. The minimum energy path (MEP) is obtained at the MP2/6-31 + G(d,p) level, and energetic information is further refined at the BMC-CCSD (single-point) level. The rate constants are calculated by the improved canonical variational transition state theory (ICVT) with the small-curvature tunneling (SCT) correction in a wide temperature range 200-3,000 K. The theoretical overall rate constants are in good agreement with the available experimental data and are found to be k 1 = 3.08 × 10-17 T 2.03exp(-32.96/T) and k 2 = 1.61 × 10-23 T 3.53 exp(-3969.51/T) cm 3molecule-1s-1.
Original language | English |
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Pages (from-to) | 445-451 |
Number of pages | 7 |
Journal | Theoretical Chemistry Accounts |
Volume | 119 |
Issue number | 5-6 |
DOIs | |
Publication status | Published - Apr 2008 |
Externally published | Yes |
Keywords
- Gas-phase reaction
- Rate constants
- Transition state