Generation of NBr( ) by the reaction of N3 radicals with Br atoms: a flow reactor source for quenching rate constant measurements
作者:Kevin B Hewett、D.W Setser
DOI:10.1016/s0009-2614(98)01116-6
日期:1998.11
The reaction between azide radicals (N3) and Br atoms is shown to produce electronically excited NBr() molecules in a room temperature flow reactor. This chemical system provides adequate concentration of NBr() so that this molecule can be systematically studied. The yield of NBr() is minor. The quenching reactions of NBr(a) with HCl, HBr, HI, NH3, Br2, CF2Br2, and O2 were examined; the rate constants
叠氮基团(N 3)与Br原子之间的反应显示出在室温流动反应器中产生电子激发的NBr()分子。该化学系统提供了足够的NBr()浓度,因此可以系统地研究该分子。NBr()的收率很小。研究了NBr(a)与HCl,HBr,HI,NH 3,Br 2,CF 2 Br 2和O 2的猝灭反应;速率常数为(22±5)×10 -14,(280±30)×10 -14,(2300±200)×10 -14,(35±3)×10 -14,(2600±300)× 10 -14,(37±6)×10 -14,和(230±30)×10 -14 cm 3分子-1 s -1。