%0 Journal Article
%T Ethyl 2-(3,4-dimethyl-5,5-dioxo-1H,4H-benzo[e]pyrazolo[4,3-c][1,2]thiazin-1-yl)acetate
%A Sana Aslam
%A Hamid Latif Siddiqui
%A Matloob Ahmad
%A Muhammad Zia-ur-Rehman
%J Acta Crystallographica Section E
%D 2012
%I International Union of Crystallography
%R 10.1107/s1600536812039797
%X In the title molecule, C15H17N3O4S, the heterocyclic thiazine ring adopts a twist-boat conformation, which differs from that in related compounds, with adjacent S and C atoms displaced by 0.981 (4) and 0.413 (5)  , respectively, on the same side of the mean plane formed by the remaining ring atoms. The mean plane of the benzene ring makes a dihedral angle of 23.43 (14)¡ã with the mean plane of the pyrazole ring. In the crystal, molecules are connected by weak C¡ªH...O hydrogen bonds to form a three-dimensional network. The H atoms of the methyl group attached to the pyrazole ring were refined over six sites with equal occupancies.
%U http://scripts.iucr.org/cgi-bin/paper?S1600536812039797