3,5-Diphenyl-1-(quinolin-2-yl)-4,5-dihydro-1H-pyrazol-5-ol

Abstract

In the title compound, C(24)H(19)N(3)O, the pyrazole ring is close to being planar (r.m.s. deviation of the five fitted atoms = 0.062 Å), and each of the N-bound quinoline ring [dihedral angle = 9.90 (7)°] and the C-bound phenyl ring in the 3-position is close to being coplanar [dihedral angle = 8.87 (9)°]. However, the phenyl ring in the 5-position forms a dihedral angle of 72.31 (9)°. The hy-droxy group forms an intra-molecular hydrogen bond to the quinoline N atom. In the crystal, mol-ecules are connected into supra-molecular layers two mol-ecules thick in the bc plane by C-H⋯O and C-H⋯π inter-actions.

Fig. 1.

The molecular structure of (I) showing the atom-labelling scheme and displacement ellipsoids at the 50% probability level.

Fig. 2.

A view of the supramolecular array in the bc plane in (I). The C—H···O and C—H···π interactions are shown as orange and purple dashed lines, respectively.

Fig. 3.

A view of the unit-cell contents of (I) in projection down the b axis. The C—H···O and C—H···π interactions are shown as orange and purple dashed lines, respectively.