5-Bromo-1H-thieno[2,3-d]imidazole

Abstract

The crystal structure of the title compound, C5H3BrN2S, shows that bromination of 1H-thieno[2,3-d]imidazole with N-bromosuccinimide in acetonitrile occurs at position 5 of the bicyclic system. The molecule is almost planar, with a mean deviation of 0.015 Å from the least-squares plane through all the non-H atoms. In the crystal, N—H...N hydrogen bonds link the molecules into infinite C(4) chains running along [101].