INFLUENCES OF EXTERNAL ELECTRIC-FIELD AND TEMPERATURE ON THE ELECTRON-TRANSFER IN NO2- NO2 SYSTEM/

In this article, the self-exchange electron transfer (ET) reaction NO2 -... NO2 --> NO2 ... NO2- has been investigated by using the semiclass ical model. The authors have focused on the influence of external elec tric field upon the diabatic potential energy surfaces and the tempera ture effect of the rate constant. It has been found that when the appl ied electric field reached a strength of 5.760 x 10(9) V.m(-1), the en ergy barrier collapsed and therefore the ET reaction became a barrier- free one. It, is interesting to note a new feature of the temperature effect on a nonadiabatic ET. Unlike those conclusions in simple collis ion theory and activated complex theory, there exists a maximum rate c onstant for a nonadiabatic ET as the value of temperature being 2E(c)/ R. Discussions have been made for this new feature.