Received 31 August 2012
In the title compound, C21H26ClN2O4S.Cl, also known as tianeptine hydrochloride, the seven-membered ring adopts a boat conformation. The dihedral angle between the mean planes of the benzene rings is 44.44 (7)°. There is an intramolecular hydrogen bond formed via S= OH-N. In the crystal, molecules are connected via pairs of N-H.·O, N-HCl and O-HCl hydrogen bonds, forming inversion dimers, which are consolidated by C-HO interactions. The dimers are linked by C-HO and C-HCl interactions, forming a two-dimensional network lying parallel to (011).
Data collection: COLLECT (Hooft, 1998); cell refinement: HKL DENZO (Otwinowski & Minor, 1997); data reduction: SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: SHELXL97 and publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PV2586 ).
This work was supported by the European Regional Development Fund (No. 2011/0014/2DP/22.214.171.124.0/10/APIA/VIAA/092).
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