5-Chloro-3,6-dimethyl-1-phenyl-1H,4H-pyrano[2,3-c]pyrazol-4-one.
In the title compound, C(14)H(11)ClN(2)O(2), two independent mol-ecules (A and B) comprise the asymmetric unit with the main difference between them being the relative orientation of the pendent phenyl ring with respect to the fused-ring system [dihedral angles = 8.32 (8)° (A) and 28.32 (8)° (B)]. In the crystal, the A mol-ecules are connected into a linear supra-molecular chain along the a axis via C-H⋯O inter-actions and linked to this via C-H⋯Cl inter-actions are the B mol-ecules. The chains are connected into layers in the ab plane by π-π inter-actions between pyrazole (A) and pyran (B) rings, and between pyrazole (B) and pyran (A) rings [centroid-centroid distances = 3.5442 (11) and 3.4022 (10) Å, respectively].
Abdullah M
AM
Asiri
Hassan M
HM
Faidallah
Khalid A
KA
Alamry
Seik Weng
SW
Ng
Edward R T
ER
Tiekink