Abstract
AbstractA modified Perdew–Wang one‐parameter hybrid density functional (mPW1N) was developed for nucleophilic substitution reactions by optimizing the fraction of exact exchange in vPW1PW91/6–31+G(d). Activation energies for 20 identity nucleophilic substitution and alkyl halide heterolysis reactions involving fluorine and chlorine were compared to values computed at the MCG3//MC‐QCISD level to arrive at an optimal value of 40.6% HF exchange in mPW1N. This choice also leads to improved transition‐state geometries over the training set. Results from mPW1N are compared with those from other common DFT methods, and some sources of error are explored. Copyright © 2002 John Wiley & Sons, Ltd.
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Dates
Type | When |
---|---|
Created | 22 years, 10 months ago (Oct. 8, 2002, 11:57 p.m.) |
Deposited | 1 year, 9 months ago (Nov. 19, 2023, 5:48 a.m.) |
Indexed | 2 months ago (July 2, 2025, 1:11 p.m.) |
Issued | 23 years ago (Aug. 13, 2002) |
Published | 23 years ago (Aug. 13, 2002) |
Published Online | 23 years ago (Aug. 13, 2002) |
Published Print | 22 years, 11 months ago (Oct. 1, 2002) |
@article{Kormos_2002, title={Adiabatic connection method for X− + RX nucleophilic substitution reactions (X = F, Cl)}, volume={15}, ISSN={1099-1395}, url={http://dx.doi.org/10.1002/poc.548}, DOI={10.1002/poc.548}, number={10}, journal={Journal of Physical Organic Chemistry}, publisher={Wiley}, author={Kormos, Bethany L. and Cramer, Christopher J.}, year={2002}, month=aug, pages={712–720} }