Crystal structure of methyl 3-amino-2,3-dideoxy-β-d-arabino-hexopyranoside. Stabilization of the crystal lattice by a double network of N–H⋯O, O–H⋯N and O–H⋯O interactions
作者:Aleksandra Dąbrowska、Dagmara Jacewicz、Artur Sikorski、Lech Chmurzyński
DOI:10.1016/j.carres.2005.06.031
日期:2005.9
The structure, conformation and configuration of methyl 3-amino-2,3-dideoxy-beta-D-arabino-hexopyranoside were investigated by H-1 NMR, C-13 NMR and IR spectroscopy, as well as by optical rotation. The crystal structure was confirmed by single-crystal X-ray crystallographic analysis at 293 K and R = 0.0434 based on 910 independent. reflections. The crystal belongs to the monoclinic system, space group of P2(1) with cell dimensions a = 6.050(1) angstrom, b = 7.284(1) angstrom, c = 10.289(2) angstrom, beta = 104.69(3)degrees, D-c = 1.341 Mg cm(-3) and V= 438.9(1) angstrom(3) for Z = 2. Furthermore, the molecule has a typical C-4(1) chair conformation. Hydrogen bonds between sugar molecules are responsible for stabilizing the crystal lattice. (C) 2005 Elsevier Ltd. All rights reserved.