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Title: | An ortho-rhom-bic polymorph of 6-de-oxy-6-iodo-1,2:3,4-di-O-isopropyl-idene - D-galactopyran-oside |
Authors: | Fun, H.-K. Liew, W.-C. Rai, S. Shetty, P. Isloor, A.M. |
Issue Date: | 2009 |
Citation: | Acta Crystallographica Section E: Structure Reports Online, 2009, Vol.65, 8, pp.o1999-o2000 |
Abstract: | The title compound, C12H19IO5, is the ortho-rhom-bic polymorph of a previously reported monoclinic form [Krajewski et al. (1987). Bull. Pol. Acad. Sci. Chem. 35, 91-102]. The dihedral angles between the six-membered ring and the two five-membered rings are 67.66 (14) and 71.79 (13) , whereas the dihedral angle between the five-membered rings is 74.41 (12) , indicating that all three rings are twisted from each other. The six-membered ring has a twist-boat conformation while both of the five-membered rings have envelope conformations. The crystal structure is stabilized by a network of C - H?O contacts linking the mol-ecules into a two-dimensional array parallel to the ab plane. 2009 Fun et al. |
URI: | 10.1107/S1600536809029031 http://idr.nitk.ac.in/jspui/handle/123456789/9932 |
Appears in Collections: | 1. Journal Articles |
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