Received 14 March 2011
In the title compound, C17H14N4O7S, the dihedral angle between the two benzene rings is 9.04 (15)°. The centroid-centroid distance of 3.9825 (19) Å between nearly parallel benzene rings of adjacent molecules suggests the existence of - stacking. Intermolecular and intra-molecular N-HO hydrogen bonding is present in the structure. The ethoxy group is disordered over two sets of sites with an occupancy ratio of 0.580 (15):0.420 (15). The crystal studied was an inversion twin.
Data collection: SMART (Bruker, 1998); cell refinement: SAINT (Bruker, 2006); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPII (Johnson, 1976) and Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: XU5177 ).
The authors are grateful to Allama Iqbal Open University, Islamabad, Pakistan, for the allocation of research and analytical laboratory facilities.
Bruker. (1998). SMART, Madison, Wisconsin, USA.
Bruker. (2006). SAINT, Madison, Wisconsin, USA.
Flack, H. D. (1983). Acta Cryst. A39, 876-881.
Johnson, C. K. (1976). ORTEPII. Report ORNL-5138. Oak Ridge National Laboratory, Tennessee, USA.
Macrae, C. F., Bruno, I. J., Chisholm, J. A., Edgington, P. R., McCabe, P., Pidcock, E., Rodriguez-Monge, L., Taylor, R., van de Streek, J. & Wood, P. A. (2008). J. Appl. Cryst. 41, 466-470.
Saeed, S., Rashid, N. & Wong, W.-T. (2010). Acta Cryst. E66, o980.
Sheldrick, G. M. (2004). SADABS, University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.