Acta Cryst. (2013). E69, o708 [ doi:10.1107/S1600536813009598 ]
Abstract: In the title compound, C18H17NO3S, the thiazepine ring adopts a slightly distorted twist-boat conformation. The dihedral angle between the mean plane of the benzothiazepin ring system and the benzene ring is 60.3 (1)°. In the crystal, molecules are linked by two pairs of inversion-related N-HO and C-HO hydrogen bonds, generating alternating R22(8) and R22(6) ring motifs, respectively, in a zigzag supramolecular chain that runs along the c axis. These chains stack along the a axis via SC [3.424 (2) Å] contacts. A three-dimensional supramolecular network is consolidated by C-H and - interactions [inter-centroid distance between dimethoxybenzene rings = 3.815 (1) Å]. The crystal studied was a non-merohedral twin, with a refined value of the minor twin fraction of 0.2477 (6) .
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