Received 30 November 2011
aKey Laboratory of Urban and Architectural Heritage Conservation, (Southeast University), Ministry of Education, Nanjing 210096, People's Republic of China, and College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China
Correspondence e-mail: firstname.lastname@example.org
In the crystal structure of the title compound, C8H5NO6, both carboxyl groups are involved in intermolecular centrosymmetric cyclic O-HO hydrogen-bonding associations, which give a zigzag chain structure extending along (21). Weak - stacking interactions are also present [minimum ring centroid separation = 3.893 (4) Å].
Data collection: CrystalClear (Rigaku, 2005); cell refinement: CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Putz, 2005); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: ZS2171 ).
Birk, T. & Weihe, H. (2009). J. Chem. Crystallogr. 39, 766-771.
Brandenburg, K. & Putz, H. (2005). DIAMOND. Crystal Impact GbR, Bonn, Germany.
Pan, M.-L., Luo, Y.-H. & Mao, S.-L. (2011). Acta Cryst. E67, o2345.
Rigaku. (2005). CrystalClear. Rigaku Corporation, Tokyo, Japan.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.