2,2′-(1-Phenyl-1H-pyrazole-3,5-diyl)diphenol

Abstract

The title compound, C21H16N2O2, was derived from 1-(2-hydroxy­phen­yl)-3-(-methoxy­phen­yl)propane-1,3-dione. The mol­ecular structure of the title compound is stabilized by an intra­molecular O—H⋯N hydrogen bond. The dihedral angle between the hydroxy­phenyl ring involved in this intra­molecular hydrogen bond and the pyrazole ring is significantly smaller [10.07 (6)°] than the dihedral angle between the pyrazole and the other hydroxy­phenyl ring [36.64 (5)°]. The benzene ring makes a dihedral angle of 54.95 (3)° with the pyrazole ring. The crystal packing is stabilized by O—H⋯O and O—H⋯N hydrogen bonds.