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Crystal structure of ?-methyl l-glutamate N-carb-oxy anhydride.

ABSTRACT: In the title compound, C7H9NO5, alternative name N-carb-oxy-l-glutamic anhydride ?-methyl ester, the oxazolidine ring is essentially planar with a maximum deviation of 0.020?(3)?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 methyl ester group, forming a tape structure along the a-axis direction. The tapes are linked by C-H?O inter-actions 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.

SUBMITTER: Kanazawa H

PROVIDER: S-EPMC4331887 | biostudies-other | 2015 Jan

REPOSITORIES: biostudies-other

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Crystal structure of γ-methyl l-glutamate N-carb-oxy anhydride.

Kanazawa Hitoshi H Inada Aya A Sakon Aya A Uekusa Hidehiro H

Acta crystallographica. Section E, Crystallographic communications 20150101 Pt 1

In the title compound, C7H9NO5, alternative name N-carb-oxy-l-glutamic anhydride γ-methyl ester, the oxazolidine ring is essentially planar with a maximum deviation of 0.020 (3) 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 methyl ester group, forming a tape structure along the a-axis direction. The tapes are linked by C-H⋯O inter-actions into a sheet parallel to the ac plane. The tapes are also stacked along the b axis wi ...[more]

PMID: 25705448

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