4-Amino-5-(2-Hydroxyphenyl)-2H-1,2,4-Triazole-3(4H)-Thione

Abstract

In the title compound, C<inf>8</inf>H<inf>8</inf>N<inf>4</inf>OS, the planar triazole ring is effectively coplanar with the benzene ring, which facilitates the formation of three intramolecular interactions N-H⋯S (leading to a thione tautomer in the solid state), O-H⋯N and C-H⋯N. Intermolecular N-H⋯S interactions lead to the formation of dimers, which are, in turn, linked to each other by N-H⋯O hydrogen bonds. © 2005 International Union of Crystallography Printed in Great Britain - all rights reserved.