Received 26 March 2010
The title compound, C15H11FN4OS, is almost planar, the dihedral angle between the aromatic ring systems being 5.00 (13)°. The conformation is stabilized by intramolecular N-HN and N-HO hydrogen bonds, which generate S(5) and S(6) rings, respectively. N-HF and C-HS interactions also occur. In the crystal, inversion dimers linked by pairs of N-HO hydrogen bonds occur, generating R22(8) loops.
Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB5381 ).
HP, MY and MR wish to acknowledge partial financial assistance given by the MoST, Government of Pakistan, under Projects for the Strengthening of S&T Education in Universities (Project No. P&D/S&T/2001/231).
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