33272-71-8Relevant academic research and scientific papers
Kinetics of Photochlorination of Halogen (F, Cl, Br) Substituted Methanes
Tschuikow-Roux, E.,Faraji, F.,Paddison, S.,Niedzielski, J.,Miyokawa, K.
, p. 1488 - 1495 (2007/10/02)
The reactions of photochemically generated Cl(2PJ) atoms with CH3Br, CH2Cl2, CH2Br2, CH2ClF, and CH2BrCl have been studied over the temperature range 0-95 deg C by using the competitive method with methane as a primary standard.Relative and absolute rate constants are reported.The preexponential factors for this group of compounds fall within the range (3.1-9.5)E-11 cm3s-1 and activation energies vary from 2.4 to 3.1 kcal mol-1.The results are compared with the results for other members of this series including CH3F, CH2F2, CHF3, CH3Cl, CH2Cl2, and CHCl3 from this and other laboratories and discussed in terms of the thermoch emistry involved.A sample calculation of the A factor using the thermochemical kinetics version of transition-state theory (TST) shows reasonable agreement with experiment.The sensitivity of the input parameters in the bond energy-bond order (BEBO) method prediction of activation energy and tunneling is discussed in some detail with CH2Cl2 as an example.
