Received 7 June 2011
In the title compound, C10H9N3O3, there is a small twist between the benzene and triazole rings [dihedral angle = 6.32 (7)°]; the carboxylic acid residue is almost coplanar with the benzene ring to which it is attached [O-C-C-C torsion angle = 1.49 (19)°]. The main deviation from coplanarity of the non-H atoms is found for the hydroxy group which is almost perpendicular to the remaining atoms [N-C-C-O torsion angle = -75.46 (16)°]. In the crystal, the presence of O-HO (between carboxyl groups) and O-HN (between the hydroxy group and the triazole ring) hydrogen bonds leads to supramolecular chains along . The chains are connected into sheets via C-HO(hydroxy) interactions.
For background to the fluorescence potential, see: McCaroll & Wandruzska (1997). For synthetic protocols, see: Rostovtsev et al. (2002); Ryu & Zhao (2005); Himo et al. (2005). For additional geometric analysis, see: Spek (2009).
Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: PLATON (Spek, 2009) and publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB5906 ).
The University of Malaya is thanked for a University of Malaya Research Grant (No. RG080/09AFR) and for support of the crystallographic facility.
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