Gas-Phase Reactions of Cl Atoms with Hydrochloroethers: Relative Rate Constants and their Correlation with Substituents? Electronegativities.

PABLO R. DALMASSO, RAÚL A. TACCONE, JORGE D. NIETO, PABLO M. COMETTO, SILVIA I. LANE

John Wiley & Sons, Ltd.

Año: 2008 vol. 21 p. 393 - 393

ate constants for the reactions of Cl atoms with CH3OCHCl2 and CH3OCH2CH2Cl were determined at (296 ± 2) K and atmospheric pressure using synthetic air as bath gas. Decay rates of these organic compounds were measured relative to the following reference compounds: CH2ClCH2Cl and n-C5H12. Using rate constants of 1.33 x 10-12 and 2.52 x 10-10 cm3 molecule-1 sec-1 for the reaction of Cl atoms with CH2ClCH2Cl and n-C5H12, respectively, the following rate coefficients were derived: k(Cl + CH3OCHCl2) = (1.05 ± 0.11) x 10-12 and k(Cl + CH3OCH2CH2Cl) = (1.14 ± 0.10) x 10-10, in units of cm3 molecule-1 s-1. The rate constants obtained were compared with previous literature data and a correlation was found between the rate coefficients of some CH3OCHR1R2RCl reactions and ∆Electronegativity of ?CHR1R2.