Kinetics of the Gas-Phase Addition of the Ethyl Radical and the tert-Butyl Radical to NO

التفاصيل البيبلوغرافية
العنوان: Kinetics of the Gas-Phase Addition of the Ethyl Radical and the tert-Butyl Radical to NO
المؤلفون: Dilger, H., Stolmar, M., Himmer, U., Roduner, E., Reid, I. D.
المصدر: The Journal of Physical Chemistry - Part A; August 20, 1998, Vol. 102 Issue: 34 p6772-6777, 6p
مستخلص: The kinetics of the addition reaction of the ethyl radical and the tert-butyl radical to NO has been investigated at 1.5 bar as a function of temperature (219−475 K) using the muon spin relaxation technique in longitudinal magnetic fields. The data are represented by k1 = (%@mt;sys@%4.5%@sx@%-2.1%@be@%+4.1%@sxx@%%@mx@% ) × 10-10 T -0.5±0.1 cm3 molecule-1 s-1 for the ethyl radical and k2 = (%@mt;sys@%5.2%@sx@%-3.1%@be@%+8.3%@sxx@%%@mx@% ) × 10-4 T -3.1±0.2 cm3 molecule-1 s-1 for the tert-butyl radical, or alternatively by Arrhenius parameters of Ea = −(1.4 ± 0.3) kJ mol-1 and A = (1.3 ± 0.2) × 10-11 cm3 molecule-1 s-1 for the ethyl radical and of Ea = −(7.3 ± 0.4) kJ mol-1 and A = (5.5 ± 0.9) × 10-13 cm3 molecule-1 s-1 for the tert-butyl radical. They provide a basis for tests of absolute rate theories for reactions occurring on more than one potential energy surface.
قاعدة البيانات: Supplemental Index