Rate constants for the dissociation of OH(-)(H(2)0) and OH(-)(H(2)0)(2) by transfer of electronic energy from 0(2)(a(1)Delta(g)) were measured. Values of 1.8 X 10(-11) and 2.2 X 10(-11) cm3 molecule(-1) s(-1) respectively, at 300 K were derived and temperature dependencies were obtained from 300 to 500 K for OH(-1)(H(2)0) and from 300 to 400 K for OH(-)(H(2)0)(2). Dissociative excitation transfer with OH(-1)(H(2)0) is slightly endothermic and the reaction appears to have ...
Rate constants and product ion distributions for the O and O(2) reactions with 02(a delta g) were measured as a function of temperature from 200 to 700 K. The measurements were made in a selected ion flow tube (SIFT) using a newly calibrated 0:(a'As) emission detection scheme with a chemical singlet oxygen generator. The rate constant for the 02 reaction is 7 x 10(-10) cm(3) s(-1) at all temperatures, approaching ...
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