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Abstract
Ab initio RHF/4-31G level molecular orbital calculations have been carried out on dimethoxymethane as a model compound for the acetal moiety in methyl pyranosides. The calculations are consistent with the predictions of the anomeric effect and the exo-anomeric effect. They reproduce very successfully the differences in molecular geometry observed by x-ray and neutron diffraction of single crystals of the methyl cy-D- and methyl 0-D-pyranosides. Calculations carried out at the 6-3 1G* level for methanediol confirm the earlier calculations at the 4-31G level, with smaller energy differences between the four staggered conformations.
Item Type: | Journal Article |
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Publication: | Journal Of The American Chemical Society |
Publisher: | American Chemical Society |
Additional Information: | Copyright of this article belongs to American Chemical Society. |
Department/Centre: | Division of Biological Sciences > Molecular Biophysics Unit |
Date Deposited: | 10 Oct 2009 12:23 |
Last Modified: | 23 Oct 2018 14:49 |
URI: | http://eprints.iisc.ac.in/id/eprint/24111 |
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