Methyl 2-O-[alpha]-D-Mannopyranosyl-[beta]-D-glucopyranoside

The structure of the title compound, C₁₃H₂₄O₁₁, has been determined. The torsion angles of the glycosidic linkage connecting the two sugar residues, [varphi]_H (H1'-C1'-O2-C2) and [psi]_H (C1'-O2-C2-H2), have values of -62.7 (2)° and -28.6 (2)°, respectively. The conformation in the crystal is similar to that obtained by energy minimization in vacuo using the HSEA force field. A chain of seven inter-residue hydrogen bonds, involving all possible H-atom donors in the molecule is observed. The chain is terminated by a ring O atom as an acceptor.

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