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Theoretical Study on Photodissociation of CH2=CCIF hv→· CH= CCIF+ H
Author(s): WANG, Cai-Xia, LIU, Kun, LI, Zong-He
Pages: 1236-
1240
Year: 2005
Issue:
13
Journal: ACTA CHIMICA SINICA
Keyword: 1-氟-1-氯乙烯; Frank-Condon点; CIS; CASSCF;
Abstract: 采用UHF,CIS和CASSCF方法,在aug-cc-pvdz基组水平上对CH2=CCIFhv→·CH=CClF+H的光解反应通道及其后续反应作了研究.计算表明:分子吸收一个光子后,在第一电子激发态(S1)经过一个过渡态解离与Cl原子同侧的C-H键,这与用CIS方法计算垂直激发得到的π→σ*C-H跃迁及其对Frank-Condon点的计算中分子的单占轨道和键电荷密度变化所预测的结果是一致的.光解产物·CH=CCIF(基态)还可再发生反应,经过渡态解离C-Cl键或是C-F键.
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