Temperature dependence of the Cl+HN3 reaction from 300 to 480

The rate constant for Cl + HN3 over the temperature range 300-480 K has bee n studied in a flow reactor. Based on the rate of loss of HN3 and the rate of NCl(a(1)Delta) generation, the temperature dependence of this reaction i s described by the collision theory expression 1.2 +/- 0.3 X 10(-11) T-0.5 exp(-1514 +/- 93/T), with E-0 = 3.0 +/- 0.2 kcal mol(-1) or an Arrhenius fi t k(T) = 2.0 +/- 1.0 X 10(-10) exp(-1452 +/- 150/T) with E-a = 2.9 +/- 0.2 kcal mol(-1). (C) 1999 Elsevier Science B.V. All rights reserved.