Acta Cryst. (2009). E65, o482  [ doi:10.1107/S1600536809003146 ]

1,3-Bis(3-methylphenyl)thiourea: triclinic polymorph

D. Shahwar, M. N. Tahir, M. A. Khan, N. Ahmad and M. Furqan

Abstract: The title compound, C₁₅H₁₆N₂S, crystallizes with two molecules in the asymmetric unit. The crystallographic behaviour of the two isomers is different. The molecules are dimerized, forming an R₂²(8) ring motif due to intermolecular N-HS hydrogen bonds. C-HS hydrogen bonds form R₂²(12) ring motifs. In one molecule, the dihedral angle between the benzene rings is 62.54 (6)°, whereas in the other it is 79.54 (6)°. The H atoms of one of the methyl groups in each molecule are disordered over two sites, with occupancy ratios of 0.52 (3):0.48 (3) and 0.60 (3):0.40 (3).

Online 6 February 2009

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