Abstract
The reaction of aniline with hydrogen atom is investigated herein using the hybrid meta-DFT functional of BB1 K. Hydrogen atom is found to preferentially add at an ortho position. However, the fate of the o-(C6H5NH2)H adduct is found to be solely the deactivation of the initial addition channel. The rate constant for the abstraction channel (C6H5NH2 + H → C6H5NH + H2) is fitted by the expression 1.10 × 10−11 exp(−4,200/T) cm3 molecule−1 s−1. Our calculated rate constant for the abstraction channel agrees very well with the available experimental measurements. Satisfactory agreement is found between calculated and experimental measurements for the displacement channel (C6H5NH2 + H → C6H6 + NH2). Our detailed analysis for the corresponding displacements in toluene and phenol suggests that the three systems exhibit similar behavior with regard to the relative importance of abstraction and displacement channels.
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This study has been supported by a grant of computing time from the Australian Centre of Advanced Computing and Communications (ac3).
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Supporting Information Available: Calculated total energies, zero-point energies, Cartesian coordinates, moments of inertia, and vibrational frequencies of all structures. (DOC 67 kb)
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Batiha, M., Altarawneh, M., Alsofi, A. et al. Theoretical study on the reaction of hydrogen atoms with aniline. Theor Chem Acc 129, 823–832 (2011). https://doi.org/10.1007/s00214-011-0940-x
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DOI: https://doi.org/10.1007/s00214-011-0940-x