Gas phase reactions of CF3O- and CF3O-•H2O and their relevance to the detection of stratospheric HCl

被引:13
作者
Amelynck, C [1 ]
Van Bavel, AM [1 ]
Schoon, N [1 ]
Arijs, E [1 ]
机构
[1] Inst Aeron Spatiale Belgique, B-1180 Brussels, Belgium
关键词
ion/molecule reactions; chemical ionization; stratospheric trace constituents;
D O I
10.1016/S1387-3806(00)00244-X
中图分类号
O64 [物理化学(理论化学)、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号
070203 ; 070304 ; 081704 ; 1406 ;
摘要
The reactions of CF3O-, CF3O-.H2O and CF3O-. HF with HCl and of CF3O- with H2O have been studied at room temperature in a flowing afterglow instrument. All reactions with HCl proceed at the gas kinetic rate. The reaction of CF3O- with HCl proceeds by fluoride transfer, whereas CF3O-.H2O and CF3O-. HF react with HCl by ligand switching. The Gibbs free energy change of the reaction of CF3O- with H2O has been determined at room temperature as well as the collisional dissociation rate constant of CF3O-.H2O ions. (Int J Mass Spectrom 202 (2000) 207-216) (C) 2000 Elsevier Science B.V.
引用
收藏
页码:207 / 216
页数:10
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