In the mol-ecule of the title compound, C(16)H(16)N(4)O, the pyrazole ring makes dihedral angles of 8.52 (13) and 9.26 (12)° with the phenyl rings. The dihedral angle between the benzene rings is 1.86 (13)°. In the crystal, mol-ecules are linked into centrosymmetric dimers via pairs of O-H⋯N hydrogen bonds. Weak N-H⋯N inter-actions connect the dimers into a chain along the  direction. The pyrazole ring adopts a highly flattened envelope conformation.
SourceActa crystallographica. Section E, Structure reports online 68:Pt 6 2012 Jun 1 pg o1661-2
Pub Type(s)Journal Article