RESUMEN
In the title compound, C8H9ClN2O, the dihedral angle between the benzene ring and the methyl-amide substituent is 68.39â (11)°. In the crystal, mol-ecules are linked by N-Hâ¯O hydrogen bonds, forming layers parallel to the ab plane.
RESUMEN
In the title compound, C9H12N2O, the mean plane through the amide group and the benzene ring form a dihedral angle of 33.93â (7)°. An intra-molecular N-Hâ¯O hydrogen bond is present. In the crystal, mol-ecules are linked by N-Hâ¯N and N-Hâ¯O hydrogen bonds, forming double-stranded chains parallel to the b axis.
RESUMEN
There are two mol-ecules in the asymmetric unit of the title compound, C(12)H(9)BrF(2)N(2)O. They have very similar conformations: the dihedral angles between their pyrazole and benzene ring systems are 78.4â (3) and 78.6â (4)°. In the crystal, weak aromatic π-π stacking [centroid-centroid separation = 3.696â (5)â Å] helps to establish the packing.