organic compounds
Open access
The asymmetric unit of the title compound, C13H10F2N2O, contains one and a half N,N′-bis(4-fluorophenyl)urea molecules. One of the molecules has crystallographic twofold rotation symmetry. The benzene rings are twisted from each other by dihedral angles of 29.69 (6)° for the molecule in a general position and 89.83 (6)° for the symmetry-generated molecule. In the crystal structure, a pair of intermolecular N—HO hydrogen bonds link symmetry-related molecules into chains along the b axis, forming R21(6) ring motifs.
organic compounds
Open access
In the title compound, C6H10N2O, the 2,3-dihydro-1H-pyrazole ring is approximately planar, with a maximum deviation of 0.013 (1) Å. Pairs of intermolecular N—HO hydrogen bonds link neighboring molecules into dimers, generating R22(8) ring motifs. These dimers are further linked into two-dimensional arrays parallel to the bc plane by intermolecular N—HO hydrogen bonds. The crystal structure is further stabilized by C—Hπ interactions.
organic compounds
Open access
In the title compound, C14H18N2O3S, the 1H-pyrazole ring is approximately planar, with a maximum deviation of 0.005 (1) Å. The dihedral angle formed between the 1H-pyrazole and phenyl rings is 79.09 (5)°. Pairs of intermolecular N—HO and OHN hydrogen bonds form dimers between neighboring molecules, generating R22(10) ring motifs. These dimers are further linked by intermolecular N—HO and O—HN hydrogen bonds into two-dimensional arrays parallel to the ac plane. The crystal structure is also stabilized by C—Hπ interactions.