Theoretical investigations on mechanisms and kinetics of CH2XO2 (X=F, Cl) with Cl reaction in the atmosphere
Theoretical investigations on mechanisms and kinetics of CH2XO2 (X=F, Cl) with Cl reaction in the atmosphere
复制标题
CH2XO2 (X=F, Cl)与Cl在大气中反应的机理和动力学的理论研究
DOI:
10.1007/s00894-020-4318-7
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发表时间:
2020-05
影响因子:
2.2
通讯作者:
He Bing
中科院分区:
文献类型:
--
作者:
Zhang Yunju;Tang Yizhen;Sun Jingyu;He Bing
The reactions of the CH2XO2(X=F, Cl) with chlorine radical have been firstly investigated utilizing the BMC-CCSD//B3LYP method. The comprehensive calculations indicate that the association-elimination and SN2 displacement reaction mechanisms existed on the singlet potential energy surface (PES), and H-abstraction and SN2 displacement reaction mechanism existed on the triplet PES for the CH2XO2(X=F, Cl) + Cl reactions. On the triplet PES, the dominant reactions are production of P3X(CHXO2(X=F, Cl) + HCl) by direct H-abstraction. On the singlet PES, three energy-rich adducts, IM1X(CH2XOOCl (X=F, Cl)), IM2X(CH2XOClO (X=F, Cl)), and IM3X(CH2(OX)OCl (X=F, Cl)), are produced. RRKM-computed reveals that IM1X(CH2XOOCl (X=F, Cl)) produced by collisional stabilization occupied the reaction T ≤ 500 and 400 K, respectively, while P1X(CHXO (X=F, Cl) + HOCl) are forecasted to be the dominant products at high temperatures. The atmospheric lifetime of CH2FO2and CH2ClO2in Cl is around 1.18 and 2.50 weeks, respectively. Time-dependent density functional theory (TDDFT) computations imply that IM1X(CH2XOOCl (X=F, Cl)) will photolyze under the sunlight. The current results could guide us to well understand the mechanism of the CH2XO2(X=F, Cl) + Cl reactions and may be helpful to understand Cl-combustion chemistry. Graphical Abstract Predicted rate constant of the dominant pathways and the total rate constants at 760 Torr, N2 in the temperature region of 200-3000 K for the CH2XO2(X=F, Cl) + Cl reactions.
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影响因子:
1.9
作者:
Jinhu Liu;Dalei Zhang;Rongshun Wang;Junhong Dai
通讯作者:
Junhong Dai
影响因子:
--
作者:
Wen-Mei Wei;Ren-hui Zheng
通讯作者:
Wen-Mei Wei;Ren-hui Zheng
影响因子:
2.8
作者:
S. Nishida;Kenshi Takahashi;Y. Matsumi;M. S. Chiappero;G. Argüello;T. Wallington;M. D. Hurley;J. C. Ball
通讯作者:
S. Nishida;Kenshi Takahashi;Y. Matsumi;M. S. Chiappero;G. Argüello;T. Wallington;M. D. Hurley;J. C. Ball
DOI:
10.1002/chin.201248241
发表时间:
2012-11
期刊:
ChemInform
影响因子:
--
作者:
S. Brown;J. Stutz
通讯作者:
S. Brown;J. Stutz
影响因子:
--
作者:
GONZALEZ, C;SCHLEGEL, HB
通讯作者:
SCHLEGEL, HB