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ABSTRACT:
SUBMITTER: Nallasivam A
PROVIDER: S-EPMC2968396 | biostudies-literature | 2009 Jan
REPOSITORIES: biostudies-literature
Acta crystallographica. Section E, Structure reports online 20090114 Pt 2
The title mol-ecule, C(21)H(18)O(8), crystallizes in two crystal polymorphs, see also Nallasivam, Nethaji, Vembu & Jaswant [Acta Cryst. (2009), E65, o314-o315]. The mol-ecules of both polymorphs differ by the conformation of the oxomethyl-acetate groups. The title mol-ecules are rather planar compared to the mol-ecules of the other polymorph. In the title mol-ecule, one of the oxomethyl-acetate groups is disordered (occupancies of 0.6058/0.3942). The structures of both polymorphs are stabilized ...[more]