Received 8 October 2013
aSchool of Materials Science and Engineering, Changzhou University & High Technology, Research Institute of Nanjing University, Changzhou 213162, Jiangsu, People's Republic of China, and bHigh Technology Research Institute of Nanjing University, Changzhou 213162, Jiangsu, People's Republic of China
Correspondence e-mail: firstname.lastname@example.org
The title compound, C4H6ClNO3, crystallizes with two independent molecules (A and B) in the asymmetric unit. In each molecule, there are N-HO and N-HCl hydrogen bonds. Both molecules are relatively planar, with the mean plane of the acetamide [N-C(=O)C] group being inclined to the mean plane of the acetate group [C-C(=O)O] by 9.23 (13)° in molecule A and 6.23 (12)° in molecule B. In the crystal, adjacent molecules are linked by O-HO hydrogen bonds and weak C-HO contacts forming -A-A-A- and -B-B-B- parallel chains propagating along the a-axis direction.
For the use of the title compound as an intermediate in the synthesis of polydespipeptides and their copolymers, which have a wide range of biomedical properties, see: Feng et al. (2010). For the synthetic procedure, see: Allmendenger et al. (1988). For bond-length data, see: Allen et al. (1987). For the crystal structure of (2,2,2-trichloroacteyl)glycine, see: Dou et al. (1995).
Data collection: CAD-4 Software (Enraf-Nonius, 1985); cell refinement: CAD-4 Software; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2655 ).
The authors thank the Center of Testing and Analysis, Nanjing University, for the data collection.
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