N-Butyl-4-hydr-oxy-2-methyl-2H-1,2-benzothia-zine-3-carboxamide 1,1-dioxide

Abstract

The title compound, C(14)H(18)N(2)O(4)S, contains hydrogen-bonded dimeric pairs of mol-ecules arranged around inversion centers, forming 14-membered rings with an R(2) (2)(14) motif. The structure is stabilized by extensive intra-molecular inter-actions. The thia-zine ring adopts a half-chair conformation, with the S and N atoms displaced by -0.485 (3) and 0.296 (3) Å, respectively, from the plane formed by the remaining atoms of the ring.

Fig. 1.

ORTEP-3 (Farrugia, 1997) drawing of (I) with displacement ellipsoids plotted at 50% probability level; intramolecular interactions have been indicated by dashed lines.

Fig. 2.

Unit cell packing of (I) showing hydrogen bonds with dashed lines; H atoms not involved in hydrogen bonds have been omitted.