In this paper, the study of various ortho and meta-substituted chroman-6-ol derivatives is presented. The OAH bond dissociation enthalpies (BDE) related to hydrogen atom transfer (HAT) mechanism of the phenolic antioxidants action, for studied molecules were calculated using DFT/B3LYP method. Calcul
PCM study of the solvent and substituent effects on bond dissociation energies of the ONO Bond—A DFT study
✍ Scribed by Li Xiaohong; Zhang Xianzhou
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 116 KB
- Volume
- 112
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
Abstract
A PCM continuum model, at the B3LYP, B3P86, and B3PW91 three‐parameter hybrid DFT methods with 6‐311G** basis set, is used to study the bond dissociation energies (BDEs) of benzyl nitrites. Compared the computed results with the experimental values, it is noted that B3PW91 functional is the best method to compute the BDEs of benzyl nitrites. The solvent and substituent effects on the BDEs of the ONO bond are analyzed, and it is shown that the BDE of the ONO bond decreases with the increment of the Hammett constants of substituent groups on benzene for benzyl nitrites except C~6~H~5~CH~2~ONO. © 2011 Wiley Periodicals, Inc. Int J Quantum Chem, 2012
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