Crystal and molecular structure ofN-acetylN-hydroxy α-amino acids
摘要:
AbstractThe crystal and molecular structures of racemic (DL) N‐acetyl‐N‐hydroxyvaline and 2‐(N‐acetyl‐N‐hydroxyamino)butyric acid have been determined from three‐dimensional X‐ray data. The crystals of both compounds are monoclinic, space group P21/a.The molecular conformation of these amino acid derivatives is similar, as far as the Φ torsion angle is concerned, but the ψ values are significantly different. In the crystal structures of both compounds, two series of intermolecular hydrogen bonds (HB's) are present: NOH…O  COH HB's link the N‐hydroxy and carboxylic groups, while OCOH…OCN HB's link the carboxylic and N‐hydroxyamidic groups.
Crystal and molecular structure ofN-acetylN-hydroxy α-amino acids
摘要:
AbstractThe crystal and molecular structures of racemic (DL) N‐acetyl‐N‐hydroxyvaline and 2‐(N‐acetyl‐N‐hydroxyamino)butyric acid have been determined from three‐dimensional X‐ray data. The crystals of both compounds are monoclinic, space group P21/a.The molecular conformation of these amino acid derivatives is similar, as far as the Φ torsion angle is concerned, but the ψ values are significantly different. In the crystal structures of both compounds, two series of intermolecular hydrogen bonds (HB's) are present: NOH…O  COH HB's link the N‐hydroxy and carboxylic groups, while OCOH…OCN HB's link the carboxylic and N‐hydroxyamidic groups.