The Brandi reaction is the transformation of spiro[cyclopropane-1,5Ј-isoxazolidines] into tetrahydropyridones under thermal conditions. According to calculations performed by the restricted and unrestricted density functional theory and post-Hartree-Fock single-and multireference methods of ab initi
Ab initio and density functional study of the conformational space of1C4 ?-L-fucose
✍ Scribed by Csonka, Gabor I.; �li�s, Krisztina; Csizmadia, Imre G.
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 213 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0192-8651
No coin nor oath required. For personal study only.
✦ Synopsis
The conformational space of 1 C ␣-L-fucose was searched by the MM2*-SUMM 4 molecular mechanics conformational search technique. The molecular geometries of the first 17 structures of lowest energy were analyzed at the HFr3᎐21G, Ž . Ž .
📜 SIMILAR VOLUMES
Ab initio calculations, in the frame of MO theory, were carried out on both most stable (chair) conformers of trimethylene cyclic sulfite. Optimized geometries derived at the HF/6-31G\* level reveal that both conformers possess a rigid chair conformation with the S=O group located either axially (co
The bonding nature of the N-N bonds in 1,2,5-trinitroimidazole I and Ž . 1,2,4,5-tetranitroimidazole II was examined with various levels of ab initio and density Ž . Ž . functional DF theories. The second-order Møller᎐Plesset perturbation method MP2 with the 6-31G\*\* basis set has predicted signifi