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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 35, Number 12
BKCSDE 35(12)
December 20, 2014

Title	Study on Anharmonic Effect of the Unimolecular Reaction of CH₂(D₂)FO
Author	Jingjun Zhong, Qian Li, Ji Luo, Wenwen Xia, Li Yao*, S. H. Lin
Keywords	RRKM theory, Rate constant, Anharmonic effect, Isotope effect, Unimolecular reaction
Abstract	Study on the unimolecular reaction for CH2FO and CD2FO is carried out. The structures, energy barriers and zero point energy of the three channels in the title unimolecular reactions are computed with the MP2/6- 311++G(3df, 3pd) method. RRKM theory is used to calculate the rate constants of canonical case at temperature range of 500–5000 K and microcanonical system at total energy of 19.05–71.68 kcal/mol. The results indicate that the anharmonic effect and isotope effect are very small for the three channels, and the anharmonic rate constants, around 109–1011 s−1, are close to the experimental prediction reasonably.
Page	3559 - 3566
Full Text	PDF

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