Experimental and theoretical studies of the title molecule were carried out to analyse its preferential conformation according to the usual energetic criteria and also examine its IR and Raman spectra. Molecular orbital calculations were performed via the semiempirical AM1 and PM3 methods and ab ini
Experimental and theoretical studies of the vibrational spectra of 3,3,6,6-tetramethyl-1,2,4,5-tetroxane
β Scribed by A. H. Jubert; R. Pis Diez; L. F. R. Cafferata
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 101 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0377-0486
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β¦ Synopsis
Spectroscopic and theoretical studies of 3,3,6,6-tetramethyl-1,2,4,5-tetroxane are presented. Molecular dynamics calculations were performed to scan the conformational space of the molecule. Density functional calculations were carried out on the stable conformers to obtain a better description of molecular geometries and total energy differences. Raman and IR spectra were recorded and assigned by comparison with harmonic vibrational wavenumbers obtained within the density functional framework and with current literature values.
π SIMILAR VOLUMES
study ( < -30"C)1111. This is best evidenced by the upfield shift of protons H' (by 23Hz) and H5 (by 32Hz) on going from ( 3 ) to ( 5 ) , which simply reflects the increased availability of the lone pair for limited delocalization but is clearly inconsistent with the development of the diamagnetic r