Regresar

F+ CF3I-IF+ CF3

Abstract:

Within the general discussion of the selectivity of energy consumption in chemical reactions the influence of translational energy upon the dynamics of neutral reactions has received significant attention [1]. A first series of investigations of the effect of reagent translational energy on the internal state distribution of reaction products was carried out by Polanyi and co-workers, applying the method of infrared arrested relaxation chemiluminescence. A number of three-atom exchange reactions forming hydrogen halides have been found to obey the general rule that collision energy in excess of a barrier of type I is channelled into translational and rotational energy of the reaction product: AT-AT’+ AR’. This is interpreted in terms of" induced repulsive energy release"[2]. The development of novel techniques, in particular the combination of the molecular beam and the laser-induced fluorescence methods, has permitted study of the detailed dynamics of chemical reactions with selective translational reagent excitation to be extended to a variety of other reaction systems