Received 24 July 2013
Refluxing a mixture of 1,10-phenanthroline, (4-fluorophenyl)thiourea and cadmium(II) chloride did not produce the expected mixed-ligand complex but formed a co-crystal of the two ligands, C12H8N2·C7H7FN2S. The asymmetric unit consists of two pairs of the co-crystal molecules. In each (4-fluorophenyl)thiourea molecule, the planes of the N2CS thiourea units are almost perpendicular to the corresponding fluorobenzene rings, subtending angles of 76.53 (7) and 85.25 (7)°. In the crystal, N-HN and N-HS hydrogen bonds form inversion dimers from the co-crystal pairs. A weak - interaction between the phenanthroline rings [centroid-centroid distance = 3.7430 (15)Å] is also observed.
Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SJ5347 ).
The authors would like to thank Universiti Kebangsaan Malaysia and the Ministry of Science and Technology, Malaysia, for research grants 06-01-02-SF0844 and DIP-2012-11, and the Centre of Research and Instrumentation (CRIM) for research facilities.
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