## Abstract The MM3 force field has been extended to deal with the lithium amide molecules that are widely used as efficient catalysts for stereoselective asymmetric synthesis. The MM3 force field parameters have been determined on the basis of the __ab initio__ MP2/6โ31G\* and/or DFT (B3LYP/6โ31G\
Molecular mechanics (MM3) calculations on azoxy compounds
โ Scribed by Yi Fan; Norman L. Allinger
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 950 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0192-8651
No coin nor oath required. For personal study only.
โฆ Synopsis
Abstract
The MM3 force field has been extended to include azoxy compounds and also the related amine oxides, both aliphatic and aromatic. The structures of nine molecules were all well fit. The heats of formation for the aliphatic compounds were also well fit, and the vibrational spectra of eight compounds were also fit to the accuracy expected for such calculations. Because many of the experimental data needed to derive the force field were either lacking or were inadequate, ab initio calculations on structures, optimized at the MP2/6โ31G* level, were used as needed. ยฉ 1994 by John Wiley & Sons, Inc.
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