Dissociative electron attachment;
Temperature dependence;
2-Chlorotoluene;
MOLECULAR-ORBITAL METHODS;
GAUSSIAN-TYPE BASIS;
PI-ASTERISK;
BASIS-SETS;
DEPENDENCE;
CHLOROBENZENE;
COMPETITION;
ANIONS;
D O I:
10.1016/j.cplett.2019.06.057
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Dissociative electron attachment to 2-chlorotoluene has been studied experimentally. The formed Cl- fragment appears in the energy range from 0 to 2 eV. Increasing the temperature of the target molecule results in a decrease of the height of the threshold peak (similar to 0 eV) but in a considerable increase of the height of the second peak at 0.78 eV. Such behaviour was observed only rarely and does not occur in similar molecules. We have analysed the out-of-plane vibrations and calculated approximate potential energy curves for the neutral and anionic states. Possible explanations of the observed temperature dependence are discussed.