Crystal structure of γ-methyl l-glutamate N-carb­oxy anhydride

Acta Crystallographica Section E: Crystallographic Communications

Uekusa, H.¹  Sakon, A.¹  Kanazawa, H.²  Inada, A.² 

[1] Chemistry and Materials Science, Tokyo Institute of Technology, Ookayama-2, Meguro-ku, Tokyo 152-8551, Japan;Faculty of Symbiotic Systems Science, Fukushima University, Kanayagawa-1, Fukushima 960-1296, Japan

关键词: CRYSTAL STRUCTURE;    POLYMERIZATION;    AMINO ACID N-CARBOXY ANHYDRIDES;    HYDROGEN BONDING;   

DOI  :  10.1107/S2056989014026917

学科分类：数学（综合）

来源: International Union of Crystallography

【 摘 要 】

In the title compound, C7H9NO5, alternative name N-carb­oxy-l-glutamic anhydride γ-methyl ester, the oxazolidine ring is essentially planar with a maximum deviation of 0.020 (3) Å. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds between the imino group and the carbonyl O atom in the methyl ester group, forming a tape structure along the a-axis direction. The tapes are linked by C—H⋯O inter­actions into a sheet parallel to the ac plane. The tapes are also stacked along the b axis with short contacts between the oxazolidine rings [C⋯O contact distances = 2.808 (4)–3.060 (4) Å], so that the oxazolidine rings are arranged in a layer parallel to the ab plane. This arrangement of the oxazolidine rings is very preferable for the polymerization of the title compound in the solid state.

【 授权许可】

CC BY