TY - JOUR
T1 - Theoretical calculations on the mechanisms of the gas-phase elimination kinetics of 2-chloro-1-phenylethane, 3-chloro-1-phenylpropane, 4-chloro-1-phenylbutane, 5-chloro-1-phenylpentane, and their corresponding chloroalkanes
T2 - The effect of the phenyl ring
AU - Maldonado, Alexis
AU - Mora, Jose R.
AU - Subero, Simon J.
AU - Loroño, Marcos
AU - Cordova, Tania
AU - Chuchani, Gabriel
N1 - Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2011/6
Y1 - 2011/6
N2 - The kinetics and mechanisms of the dehydrochlorination of 2-chloro-1- phenylethane, 3-chloro-1-phenylpropane, 4-chloro-1-phenylbutane, 5-chloro-1-phenylpentane, and their corresponding chloroalkanes were examined by means of electronic structure calculation using density functional theory methods B3LYP/6-31G(d,p), B3LYP/6-31++G(d,p), MPW1PW91/6-31G(d,p), MPW1PW91/6-31++G(d,p), PBEPBE/6-31G(d,p), and PBEPBE/6-31++G(d,p). The potential energy surface was investigated for the minimum energy path. Calculated enthalpies and energies of activation are in good agreement with experimental values using the MPW1PW91 and B3LYP methods. The transition state of these reactions is a four-centered cyclic structure. The reported experimental results proposing neighboring group participation by the phenyl group was not supported by theoretical calculations. The rate-determining process in these reactions is the breaking of ClC bond. The reactions are described as concerted moderately polar and nonsynchronous.
AB - The kinetics and mechanisms of the dehydrochlorination of 2-chloro-1- phenylethane, 3-chloro-1-phenylpropane, 4-chloro-1-phenylbutane, 5-chloro-1-phenylpentane, and their corresponding chloroalkanes were examined by means of electronic structure calculation using density functional theory methods B3LYP/6-31G(d,p), B3LYP/6-31++G(d,p), MPW1PW91/6-31G(d,p), MPW1PW91/6-31++G(d,p), PBEPBE/6-31G(d,p), and PBEPBE/6-31++G(d,p). The potential energy surface was investigated for the minimum energy path. Calculated enthalpies and energies of activation are in good agreement with experimental values using the MPW1PW91 and B3LYP methods. The transition state of these reactions is a four-centered cyclic structure. The reported experimental results proposing neighboring group participation by the phenyl group was not supported by theoretical calculations. The rate-determining process in these reactions is the breaking of ClC bond. The reactions are described as concerted moderately polar and nonsynchronous.
UR - http://www.scopus.com/inward/record.url?scp=79955514364&partnerID=8YFLogxK
U2 - 10.1002/kin.20548
DO - 10.1002/kin.20548
M3 - Artículo
AN - SCOPUS:79955514364
SN - 0538-8066
VL - 43
SP - 292
EP - 302
JO - International Journal of Chemical Kinetics
JF - International Journal of Chemical Kinetics
IS - 6
ER -