Experimental Kinetics Study of the Reaction of Boron Atoms, B( 2 P J ), with Ethylene at Very Low Temperatures (23−295 K) (original) (raw)

The kinetics of the reaction B(2 P J) + C 2 H 4 has been investigated between 23 and 295 K in a continuous flow CRESU (cinétique de réaction en écoulement supersonique uniforme) apparatus using pulsed laser photolysis of trimethyl borate, B(OCH 3) 3 , to generate B(2 P J) atoms and laser-induced fluorescence to observe the kinetic decay of the boron atoms and hence determine the rate coefficients. The thermal rate constant temperature dependency is well described by the following expression: k(T)) (1.86 (0.40) × 10-10 (T/300)-(0.70(0.30) × exp(-(26 (14)/T) cm 3 molecule-1 s-1 indicating the absence of any significant activation barrier in the entrance channel of the potential energy surface of the title reaction.