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Reactions of O2H− and its hydrates with CH3CN, CO2 and SO2

✍ Scribed by X. Yang; A.W. Castleman Jr.

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
502 KB
Volume
179
Category
Article
ISSN
0009-2614

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✦ Synopsis

Gas-phase hydrated anions 02H-(H30)n=0-2 are produced by a simple discharge ionization method, and their reactivities are studied in a fast flow reactor at room temperature. Rate constants for the reactions of OzHm and its hydrates with CH,CN, SO* and CO2 are measured, and reaction mechanisms are proposed to account for the findings. In the case of CHJN, dominant reaction channels for OzH-are proton transfer to form CH&N-and a more complicated mechanism to form CN-; association and switching evidently may occur for reactions with 02H-(Hz0).=1.1. For SO1 and CO*, the major reaction pathways are switching reactions leading to the formation of HCOc(H20),, HSO,( H,O), and HSO; (H,O),. The effect of salvation, and some possible applications to atmospheric chemistry are also discussed.

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