3a,11b-Dihydroxy-3a,11b-dihydro-1H-imidazo[4,5-f][1,10]phenanthroline-2(3H)-thione

Abstract

The title compound, C13H10N4O2S, was prepared through a cyclization reaction of 1,10-phenanthroline-5,6-dione and thiourea. The dihedral angle between the pyridine rings is 8.22 (2)°. In the crystal, molecules are connected by N—H...O, O—H...N, N—H...S and O—H...S hydrogen bonds, forming a three-dimensional network.