Diels-Alder reactions of cyclopentadiene and 9,10-dimethylanthracene with cyanoalkenes: The performance of density functional theory and Hartree-Fock calculations for the prediction of substituent effects

Jones, GO; Guner, VİLDAN; Houk, KN

doi:10.1021/jp052055z

Diels-Alder reactions of cyclopentadiene and 9,10-dimethylanthracene with cyanoalkenes: The performance of density functional theory and Hartree-Fock calculations for the prediction of substituent effects

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Jones G., Guner V., Houk K.

JOURNAL OF PHYSICAL CHEMISTRY A, vol.110, no.4, pp.1216-1224, 2006 (SCI-Expanded)

Publication Type: Article / Article
Volume: 110 Issue: 4
Publication Date: 2006
Doi Number: 10.1021/jp052055z
Journal Name: JOURNAL OF PHYSICAL CHEMISTRY A
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Page Numbers: pp.1216-1224
Hacettepe University Affiliated: Yes

Abstract

The activation enthalpies for the reactions of cyclopentadiene with ethylene, acrylonitrile, fumaronitrile, maleonitrile, vinylidene cyanide, tricyanoethylene, and tetracyanoethylene have been computed with the Hartree-Fock quantum mechanical method and a variety of density functionals (B3LYP, BPW91, and MPW1K) and compared to classic experimental data obtained by Sauer, Wiest, and Mielert (Chem. Ber. 1964, 97, 3183). Some significant errors in B3LYP activation enthalpies involving cyano groups, especially 3 or 4 cyano groups, have been identified, whereas HF and MPW1K reproduce substituent effects quite accurately.