活性氮与氯代烷烃碰撞的发射光谱研究

Studies on the Emission Spectra of Chloralkane Reaction with Active Nitrogen

在流动反应管中通过氮气空心阴极放电产生了活性氮,在其下游加入含氯有机物,观察到解离产物的发射光谱,并对其解离过程进行了简单的讨论.实验结果表明,活性氮与CCl4碰撞反应时可产生激发态的NCl(b1Σ+)自由基,而活性氮与CHCl3或CH2Cl2等碰撞反应时则只有CN(A,B)出现,没有NCl(b1Σ+)产生.

Active nitrogen has been prepared by hollow-cathode discharge of N2 in a flowing afterglow system. Emission spectra of decomposition productions have been observed when chloralkane （CCl4, CHCl3, CH2Cl2, C2H2Cl4, C4H9Cl） are added to a stream of active nitrogen. The results show that the electronically excited NCl （b^1∑^＋ ） is obtained when CCl4 is admitted into a flow of active nitrogen, but CHCl3 or CH2Cl2 addition does not result in such emission.