title: Crystal structure of γ-ethyl-l-glutamate N-carb-oxy anhydride.
abstract: In the title compound (alternative name N-carboxy-l-glutamic anhydride γ-ethyl ester), C8H11NO5, the oxazolidine ring is essentially planar, with a maximum deviation of 0.019 (2) Å. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds between the imino group and the carbonyl O atom in the ethyl ester group, forming a tape structure along the c-axis direction. The oxazolidine rings of adjacent tapes are arranged into a layer parallel to the ac plane. This arrangement is favourable for the polymerization of the title compound in the solid state.
authors.affiliation: Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, Fukushima, 960-1296, Japan.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Kanazawa
authors.affiliation: Faculty of Symbiotic Systems Science, Fukushima University, 1 Kanayagawa, Fukushima, 960-1296, Japan.
authors.forename: Aya
authors.initials: A
authors.lastname: Inada
keywords: amino acid N-carb­oxy anhydrides; crystal structure; hydrogen bonding; solid-state polymerization