%0 Journal Article
%T 4-Amino-N-(4,6-dimethylpyrimidin-2-yl)benzenesulfonamide¨C2-nitrobenzoic acid (1/1)
%A Graham Smith
%A Urs D. Wermuth
%J Acta Crystallographica Section E
%D 2013
%I International Union of Crystallography
%R 10.1107/s1600536813000779
%X In the asymmetric unit of the title co-crystal, C12H14N4O2S¡¤C7H5NO4, the sulfamethazine and 2-nitrobenzoic acid molecules form a heterodimer through intermolecular amide¨Ccarboxylic acid N¡ªH...O and carboxylic acid¨Cpyrimidine O¡ªH...N hydrogen-bond pairs, giving a cyclic motif [graph set R22(8)]. The dihedral angle between the two aromatic ring systems in the sulfamethazine molecule is 88.96 (18)¡ã and the nitro group of the acid is 50% rotationally disordered. Secondary aniline N¡ªH...Osulfone hydrogen-bonding associations give a two-dimensional structure lying parallel to the ab plane.
%U http://scripts.iucr.org/cgi-bin/paper?S1600536813000779