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• W1986700897 abstract "The reactions of Cl atoms with cis- and trans-2-butene have been studied using FTIR and GC analyses. The rate constant of the reaction was measured using the relative rate technique. Rate constants for the cis and trans isomers are indistinguishable over the pressure range 10−900 Torr of N2 or air and agree well with previous measurements at 760 Torr. Product yields for the reaction of cis-2-butene with Cl in N2 at 700 Torr are meso-2,3-dichlorobutane (47%), dl-2,3-dichlorobutane (18%), 3-chloro-1-butene (13%), cis-1-chloro-2-butene (13%), trans-1-chloro-2-butene (2%), and trans-2-butene (8%). The yields of these products depend on the total pressure. For trans-2-butene, the product yields are as follows: meso-2,3-dichlorobutane (48%), dl-2,3-dichlorobutane (17%), 3-chloro-1-butene (12%), cis-1-chloro-2-butene (2%), trans-1-chloro-2-butene (16%), and cis-2-butene (2%). The products are formed via addition, addition−elimination from a chemically activated adduct, and abstraction reactions. These reactions form (1) the stabilized 3-chloro-2-butyl radical, (2) the chemically activated 3-chloro-2-butyl radical, and (3) the methylallyl radical. These radicals subsequently react with Cl2 to form the products via a proposed chemical mechanism, which is discussed herein. This is the first detailed study of stereochemical effects on the products of a gas-phase Cl+olefin reaction. FTIR spectra (0.25 cm-1 resolution) of meso- and dl-2,3-dichlorobutane are presented. The relative rate technique was used (at 900 Torr and 297 K) to measure: k(Cl + 3-chloro-1-butene) = (2.1 ± 0.4) × 10-10, k(Cl + 1-chloro-2-butene) = (2.2 ± 0.4) × 10-10, and k(Cl + 2,3-dichlorobutane) = (1.1 ± 0.2) × 10-11 cm3 molecule-1 s-1." @default.
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• W1986700897 date "2007-01-30" @default.
• W1986700897 modified "2023-09-27" @default.
• W1986700897 title "Kinetics, Products, and Stereochemistry of the Reaction of Chlorine Atoms with <i>c</i><i>is</i>- and <i>t</i><i>rans</i>-2-Butene in 10−700 Torr of N₂ or N₂/O₂ Diluent at 297 K" @default.
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• W1986700897 doi "https://doi.org/10.1021/jp067317r" @default.
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