## Abstract This article compares several quantum mechanical approaches to the computation of chemical shielding tensors in peptide fragments. First, we describe the effects of basis set quality up to the complete basis set (CBS) limit and level of theory (HF, MP2, and DFT) for four different atoms
Evaluation of a Combined Quantum Chemical Method Used in Calculating OH Bond Dissociation Enthalpy
✍ Scribed by You-Min Sun; Hong-Yu Zhang; De-Zhan Chen
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 355 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0256-7660
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
OH bond dissociation enthalpies (BDE) for a variety of substituted phenols were calculated using a combined quantum chemical method. It is found that the calculated OH BDE correlated well with the recommended values, except for __ortho‐tert‐__butyl substituted phenols. For the electron‐donating group substituted phenols the calculated OH BDE are slightly higher than the recommended values, however, for the electron‐withdrawing group substituted phenols the calculated OH BDE are slightly lower than the recommended values.
📜 SIMILAR VOLUMES
## Abstract Although the two hydroxyl groups in 1,2‐diols interact as evidenced by NMR and IR spectroscopic shifts, electron density topological analysis has shown a bond critical point (BCP) and atomic bond path to be absent (Klein, R. A.; J Comp Chem 2002, 23, 585–599; J Am Chem Soc 2002, 124, 13