结构化学
結構化學
결구화학
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
2002年
1期
67-70
,共4页
迟国臣%陈茹玉%王宏根%姚心侃
遲國臣%陳茹玉%王宏根%姚心侃
지국신%진여옥%왕굉근%요심간
nucleosides%oxazoline%conformation%crystal structure
The title compound, C15H22N3O9P·2H2O, Mr=455.36, crystallizes in orthorhombic, space group P212121, with a =9.193(2), b =14.681(3), c =15.201(3)A, V =2501(1)A3, Z =4, Dx=1.474g/cm3, λ(MoKα)=0.71073A, μ=0.1894mm-1, T=299±1K, F(000)=960, R=0.061 and Rw=0.068 for 1899 observed reflections with I≥3σ(I). The analysis results indicate that the title compound is of lyxo-configuration and the configuration at C4″ is S. In the crystal state the molecule has anti conformation about glycosidic bond with the torsion angle-151.7°, the sugar ring is puckered with C3′-endo-C2′-exo, and the conformation of the C4′-C5′ bond is-sc.
