Intermolecular C-H...pi interactions in 1,5-diphenyl-3-(2-pyridyl)-2-pyrazoline.
The title compound, C(20)H(17)N(3), is a derivative of 1,3,5-triaryl-2-pyrazoline and can act as an N,N'-bidentate ligand. This molecule features strong fluorescence that can be explained by an extended pyridyl-C=N-N-phenyl system. The three-dimensional structure is formed by means of an extended network of weak C-H...pi hydrogen bonds supported by pi-pi interactions.