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Flame emission studies of ozone with metal alkyls: Zn (CH3)2 and Zn (C2H5)2

✍ Scribed by Henry U. Lee; Richard N. Zare

Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
409 KB
Volume
24
Category
Article
ISSN
0010-2180

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✦ Synopsis

Resolved flame emission spectra from the reaction of ozone, O 3, with zinc dimethyl, Zn (CH3) 2, and zinc diethyl, Zn (C2Hs)2, in a flow system at about one tort pressure reveal a number of interesting electronically-excited species. The Zn (CHs) 2 + 0 3 flame has a pale blue appearance, characteristic of the "cool flame" bands of CH=O, while the Zn (C. H.). + 0 s flame has a deep blue appearanct; caused by ZnH* emission. In addition the reaction ~f ~)3~with H atoms re.sulting probably from the decomposition of C2H s radicals in the latter reaction leads to strong OH T (2IIi) emission (Meinel . bands). Also, OH* (2 ~+) emission is observed and is found to have a quadratic dependence on OH T. Mechanisms involving the different chemistry of CH 3 and C2H s radicals in the flame are proposed to account for these observations.

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