Single crystal formation by solid state reaction between 8-hydroxyquinoline and 2,4,5-trichlorophenol

8-Hydroxyquinoline reacts with 2,4,5-trichlorophenol in solution as well as in the solid state forming a 1:1 addition compound. In the solid state, reaction proceeds by the diffusion of 8-hydroxyquinoline into the crystal lattice of 2,4,5-trichlorophenol and the reaction product separates in the form of single crystals. The crystal structure of the reaction product has been determined by X-ray diffraction techniques and belongs to a monoclinic system.