The Raman spectrum of coronene was calculated using the scaled quantum mechanical force Ðeld approach, based on density functional calculations at the B3LYP/6-31G\* level. This procedure applied to benzene reproduces the position of the gas phase fundamentals with 7 cm-1 absolute mean deviation. Sem
Scaled quantum mechanical study of vibrational force field for p-difluorobenzene and p-fluorotoluene
✍ Scribed by Andrzej A. Jarzęcki; Ernest R. Davidson; Quan Ju; Charles S. Parmenter
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 248 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
The ground-state geometries, scaled quantum mechanical SQM quadratic force field, and infrared and Raman intensities of p-difluorobenzene and p-fluorotoluene have been determined from density functional theory, using the B3-LYP hybrid functional and the 6-31G U basis set. Based on these calculations, one b mode of 2 u p-difluorobenzene is reassigned. Possible reassignments of a few other, less certain, experimental bands are proposed.
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