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Reaction of hot H atoms with CD 3 Br
Author(s) -
Oldershaw Geoffrey A.,
Smith Alan
Publication year - 1984
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550160304
Subject(s) - chemistry , yield (engineering) , photodissociation , range (aeronautics) , translational energy , activation energy , chemical reaction kinetics , chemical kinetics , photochemistry , thermodynamics , kinetics , physics , materials science , dissociation (chemistry) , composite material , quantum mechanics
Energetic H atoms produced by photolysis of gaseous HI react with CD 3 Br by D abstraction (1) and Br abstraction (2) and possibly also by the substitution reactions (4) and (5).Yields of HD and CD 3 H have been determined for several defined initial translational energies of H * . The phenomenological threshold energy of reaction (1) is 53 ± 5 kJ/mol. Over the range of initial energies of 76–109 kJ mol the integral probability of reaction (1) increases substantially, but the sum of the integral probabilities of reactions (2) and (5) shows little change. The ratio of the sum of the integral yields of reactions (2) and (5) to the integral yield of reaction (1), when normalized to equal numbers of Br and D atoms, is 69 ± 33 at an initial energy of 76 kJ/mol and 31 ± 6 at 109 kJ/mol.