3-(2-Bromo-phen-yl)thia-zolo[3,2-a]benzimidazole.

The title compound, C(15)H(9)BrN(2)S, was prepared by the reaction of 1-bromo-2-(2,2-dibromo-vin-yl)benzene with 1H-benzo[d]imidazole-2(3H)-thione. The thia-zolo[3,2-a]benz-imidazole fused-ring system is nearly planar, the maximum atomic deviation being 0.049 (4) Å. This mean plane is oriented at a dihedral angle of 71.55 (17)° with respect ot the bromo-phenyl ring. π-π stacking is observed in the crystal structure, the centroid-centroid distance between the thia-zole and imidazole rings of adjacent mol-ecules being 3.582 (2) Å.