4-{[5-(4-Chloro-phen-yl)-1-(4-fluoro-phen-yl)-1H-pyrazol-3-yl]carbon-yl}-N-ethyl-piperazine-1-carboxamide.

TLDR: The asymmetric unit of the title compound, C23H23ClFN5O2, contains two crystallographically independent mol-ecules, and the pyrazole ring makes dihedral angles of 43.93 and 35.82°, respectively, with the fluoro and chloro-substituted benzene rings as discussed by the authors.

Abstract: The asymmetric unit of the title compound, C23H23ClFN5O2, contains two crystallographically independent mol­ecules. In one mol­ecule, the pyrazole ring makes dihedral angles of 43.93 (7) and 35.82 (7)°, respectively, with the fluoro- and chloro-substituted benzene rings, while the corresponding angles in the other mol­ecule are 52.26 (8) and 36.85 (7)°. The piperazine rings adopt chair conformations. In the crystal, adjacent mol­ecules are connected via inter­molecular N—H⋯O, C—H⋯F, C—H⋯N and C—H⋯O hydrogen bonds, forming a two-dimensional network parallel to the bc plane. The crystal structure is further stabilized by a weak π–π inter­action with a centroid–centroid distance of 3.6610 (8) A and by C—H⋯π inter­actions.