The temperature dependence of the cage effect in the gas phase
The photodissocn. of I2 was studied in the gas phase by laser flash photolysis. The decrease of the quantum yield with increasing C2H5 and C3H8 pressure is interpreted in terms of the cage effect. As the temp. is increased a less pronounced cage effect is obsd. The trends in the measured quantum yields with changing temp. and pressure agree with model calcns. for dissocn. in a viscous continuum. However the simple model applied is not useful for quant. predictions. The 2nd order rate const. for 1 atom recombination increases slightly with increasing temp.
Keywords: 74-84-0 ; 74-98-6 Role: RCT (Reactant) ; RACT (Reactant or reagent) (photolysis of iodine vapor in presence of ; laser flash ; cage effect in) ; 7553-56-2 Role: RCT (Reactant) ; RACT (Reactant or reagent) (photolysis of ; laser flash ; in vapor phase ; temp. dep ; cage effect gas phase temp ; photolysis iodine vapor cage effect
Copyright 2003 ACS
Radiation Chemistry, Photochemistry, and Photographic Processes
Inst. Chim. Phys.,Ec. Polytech. Fed. Lausanne,Lausanne,Switz. FIELD URL:
written in English.
Kinetics of recombination (of iodine atoms in vapor phase, temp. effect on); Photolysis (flash, laser-induced, of iodine vapor, temp. dependence of cage effect in)
Record created on 2011-02-01, modified on 2016-08-09