Research Article: 1-[3-(Anthracen-9-yl)-5-(pyridin-2-yl)-4,5-dihydro-1H-pyrazol-1-yl]ethanone

Date Published: May 01, 2012

Publisher: International Union of Crystallography

Author(s): Shi-Lu Zhang, Kun Huang, Da-Bin Qin.


In the title compound, C24H19N3O, the pyrazoline ring adopts an envelope conformation with the C atom linking to the pyridine ring as the flap. The mean plane of the pyrazoline ring makes dihedral angles of 85.54 (4) and 81.66 (3)° with the pyridine ring and the anthracene ring system, respectively. In the crystal, mol­ecules are linked by C—H⋯O hydrogen bonds. In addition, weak π–π inter­actions [centroid–centroid distances = 3.695 (3)–3.850 (7) Å] are observed.

Partial Text

For applications of pyrazoline derivitives, see: Amir et al. (2008 ▶); Stell (2005 ▶). For the synthesis of the title compound, see: Lévai & Jekó (2006 ▶). For a related structure, see: Liu et al. (2008 ▶).