Crystal structure of 4-nitro-phenyl 6
| Autor: | Bruno Leonardo, Silva, Ricardo José, Alves, Nivaldo Lúcio, Speziali |
|---|---|
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Acta Crystallographica Section E: Crystallographic Communications |
| ISSN: | 2056-9890 |
| Popis: | The pyranoid ring of the title compound C14H19NO8·H2O has a 4 C 1 conformation and the 4-nitrophenyl moiety is essentially planar. The galactoside molecules are connected by several O—H⋯O hydrogen bonds, forming a sheet lying parallel to (100), and by intermolecular C—H⋯O interactions. The synthesis and crystal structure of the title compound, C14H19NO8·H2O, prepared in three steps from 6-O-ethyl-1,2;3,4-di-O-isopropylidene-α-d-galactopyranose using protecting-group strategies employed in carbohydrate chemistry, is reported. The asymmetric unit consists of a single galactoside molecule, in which the pyranoid ring has a 4 C 1 conformation and the 4-nitrophenyl moiety is essentially planar. In the crystal, each carbohydrate is surrounded by other d-galactose residues and water molecules, linked by O—H⋯O hydrogen bonds involving all hydroxy groups, giving a two-dimensional substructure lying parallel to (100) and extended into three dimensions by C—H⋯O interactions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|