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作 者:吴明丽[1] 隆正文[1] 龙波[1] WU Mingli LONG Zhengwen* LONG Bo(College of Science, Guizhou University, Guiyang 550025, Chin)
出 处:《贵州大学学报(自然科学版)》2016年第5期6-9,46,共5页Journal of Guizhou University:Natural Sciences
基 金:国家自然科学基金项目资助(41165007)
摘 要:本文主要运用量子化学方法和过渡态理论对羰基化合物(CH_3)_2C(OH)C(O)CH_3与Cl原子的大气反应进行研究。在CCSD(T)-F12A/VDZ-F12//BHand HLYP/6-311++G(d,p)能级沿着势能面找到了四条反应通道。研究表明来自于与(CH_3)_2C(OH)C(O)CH_3中—OH相邻两个甲基(—CH_3)的氢提取是主要反应通道,有最低的能垒-0.69 kcal/mol和-1.31 kcal/mol。因此,大气中Cl原子与(CH_3)_2C(OH)C(O)CH_3中H_2反应最容易进行。This paper mainly researches on the reactions of C1 atom with carbonyl compound (CH3 ) 2C (OH) C (O) CH3 by quantum chemical methods and transition state theory. We explore four reaction pathways at the CCSD( T)- F 12A/VDZ- F 12// BHandHLYP/6- 311 + + G ( d, p) level. The calculated kinetics demonstrate that come from the CH3 in the ( CH3 ) 2C(OH) C(O) CH3 which adjacent to OH are major reaction pathways, which involve the lowest reaction barriers of -0.69 kcal/mol and -1.31 kca]/mol with respect to separate reactants, respectively. As a result, the C1 atom in the atmosphere with (CH3) 2C (OH)C (O)CH3 in H2 reaction is the most easily.
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