Theoretical Chemistry Accounts

, Volume 130, Issue 2, pp 251–260

Assessment of theoretical procedures for hydrogen-atom abstraction by chlorine, and related reactions

Regular Article

DOI: 10.1007/s00214-011-0967-z

Cite this article as:
Chan, B. & Radom, L. Theor Chem Acc (2011) 130: 251. doi:10.1007/s00214-011-0967-z


We have examined a number of hydrogen-abstraction reactions and assessed various theoretical procedures with regard to their performance for geometry optimization and for calculating barriers and reaction energies. We find that the BH&H-LYP and M05-2X procedures with the 6-31+G(d,p) basis set provide reasonable predictions for the geometries of the transition structures and also yield reasonable imaginary frequencies when compared with our benchmark QCISD/6-31+G(d,p) and CCSD(T)/6-311+G(3df,2p) values. For the calculation of barriers and reaction energies, M05-2X appears to be the most accurate of the hybrid functionals. The double-hybrid functionals, B2K-PLYP, UB2-PLYP-09, ROB2-PLYP, and DSD-B-LYP-D3, when used in combination with an augmented triple-zeta basis set, give very good agreement with the benchmark URCCSD(T)/aug-cc-pVQZ energies. We find that for wavefunction procedures, use of CCSD(T) in combination with an augmented triple-zeta quality basis set is required for the accurate prediction of barriers and reaction energies for these reactions.


Hydrogen abstractionAb initioDensity functional theory

Supplementary material

214_2011_967_MOESM1_ESM.pdf (247 kb)
Supplementary material 1 (PDF 247 kb)

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.School of Chemistry and ARC Centre of Excellence for Free Radical Chemistry and BiotechnologyUniversity of SydneySydneyAustralia