Trends in R-X bond dissociation energies (R = Me, Et, i -Pr, t -Bu; X = H, CH 3 , OCH 3 , OH, F): a surprising shortcoming of density functional theory
The performance of a variety of high-level composite procedures, as well as lower-cost density functional theory (DFT)- and second-order perturbation theory (MP2)-based methods, for the prediction of absolute and relative R-X bond dissociation energies (BDEs) was examined for R = Me, Et, i-Pr and t-Bu, and X = H, CH3, OCH3, OH and F. The methods considered include the high-level G3(MP2)-RAD and G3-RAD procedures, a variety of pure and hybrid DFT methods (B-LYP, B3-LYP, B3-P86, KMLYP, B1B95,...[Show more]
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|Source:||Journal of Physical Chemistry A|
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