Received 14 January 2013
The asymmetric unit of the title compound, C14H17NO4·1.25H2O, consists of four substituted pyrrolidone molecules (two pairs of enantiomers) and five water molecules. The five-membered rings each have an envelope conformation, with the C atom bonded to the ester group as the flap. The mean planes of the five-membered rings of the four pyrrolidone molecules make dihedral angles of 60.87 (5), 64.45 (5), 62.03 (5) and 65.79 (5)° with respect to the phenyl rings. In the crystal, the pyrrolidone and water molecules are connected through O-HO hydrogen bonds, forming a layer parallel to the ab plane. The two-dimensional network is further stabilized by intermolecular C-HO hydrogen bonds.
For the structures of similar compounds, see: Ma & Jiang (1998); Chu et al. (2011); Gainsford & Mason (2010). For the synthesis of the precursor substituted 2,5-dihydropyrrole-2-one, see: Mohammat et al. (2009).
Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: SHELXL97 and publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: IS5239 ).
The authors acknowledge the generous support of Universiti Teknologi MARA Malaysia (FRGS grant No. 600-RMI/ST/FRGS 5/3/Fst (11/2008) and the University of Malaya.
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