摘要
By means of direct dynamics methods, theoretical investigations are carried out on the multiple-channel reaction Br + CH3Br. The minimum energy path are calculated at the MP2/6-311+G(d, p) level, and energetic information is further refined at the QCISD(T)/6-311+G(3df, 2p) (single-point) level. The rate constants for H-abstraction channel is calculated by canonical variational transition state theory with small-curvature tunneling contributions over the wide temperature region 200-3000 K. The theoretical three-parameter expression of reaction (R1) is given as k1 = 1.05 × 10-17T 2.43exp(-5510.86/T) (in cm3 molecule-1 s -1). For the title reaction, H-abstraction channel leading to the formation of CH2Br + HBr is the predominant channel.
源语言 | 英语 |
---|---|
页(从-至) | 12-17 |
页数 | 6 |
期刊 | Chemical Physics Letters |
卷 | 420 |
期 | 1-3 |
DOI | |
出版状态 | 已出版 - 10 3月 2006 |
已对外发布 | 是 |