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Azide mechanisms for the production of NCl metastables
Author(s) -
Pritt A. T.,
Coombe R. D.
Publication year - 1980
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.550121007
Subject(s) - chemistry , chlorine atom , molecule , chlorine , reaction rate constant , sequence (biology) , azide , production (economics) , excited state , crystallography , medicinal chemistry , atomic physics , kinetics , physics , organic chemistry , biochemistry , quantum mechanics , economics , macroeconomics
The production of both the b 1 Σ + and a 1 Δ states of NCl has been observed from the reaction of HN 3 with flowing streams of Cl and F atoms. The results suggest that a two‐step reaction sequence is responsible for the production of excited NCl, as follows:The rate contant (all products) for the first step is k (F + HN 3 ) > 1 × 10 −11 cm 3 /molecule sec. Comparison of this value to results obtained in a previous study of the F + HN 3 system yields a value k (F + N 3 ) = 2 × 10 −12 cm 3 /molecule sec. The rate constant for the reaction of chlorine atoms with HN 3 was determined to be k (Cl + HN 3 ) 1 × 10 −12 cm 3 /molecule sec. The difference between the Cl + HN 3 and F + HN 3 rates is interpreted in terms of an addition–elimination mechanism.