Abstract
Theoretical investigations are carried out on the reaction Cl + CH2FCl by means of direct dynamics method. The minimum energy path (MEP) is obtained at the MP2/6-311G(d, p) level. The energetic information is further improved by single-point energy calculations using QCISD(T)/6-311++G(d, p) method. The kinetics of this reaction are calculated by canonical variational transition state theory incorporating with the small-curvature tunneling correction over a wide temperature range of 220–3,000 K, and rate constant expression are found to be k(T) = 1.48 × 10−17 T 2.04exp(−913.91/T). For the title reaction, H-abstraction reaction channel is the major channel at the lower temperatures. At higher temperatures, the contribution of Cl-abstraction reaction channel should be taken into account.
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Acknowledgments
The authors thank Prof. Donald G. Truhlar for providing POLYRATE 9.1 program. This work is supported by the National Natural Science Foundation of China (No. 20773021), and Training Fund of NENU’S Scientific Innovation Project (NENU-STC07016). We are greatly thankful for the referees’ helpful comments.
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Jia, XJ., Liu, YJ., Sun, JY. et al. Mechanistic and dual-level direct dynamics studies on the reaction Cl + CH2FCl. Theor Chem Acc 124, 105–113 (2009). https://doi.org/10.1007/s00214-009-0587-z
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DOI: https://doi.org/10.1007/s00214-009-0587-z