Nadiah Ameram

4-Methyl-N-[2-(pyridin-2-yl)ethyl-carbamo-thio-yl]benzamide.

In the title compound, C16H17N3OS, the dihedral angle between the planes of the benzene and pyridine rings is 71.33 (15)°. An intramolecular N—H⋯O hydrogen bond is present. In the crystal, weak aromatic C—H⋯O hydrogen bonds link the molecules into chains extending along a.

Crystal structure of N-carbamo­thioyl-2-methyl­benzamide

There are two molecules in the asymmetric unit of the title compound, C9H10N2OS. In one, the dihedral angle between the aromatic ring and the carbamothioyl group is 52.31 (7)° and in the other it is 36.16 (6)°. Each molecule features an intramolecular N—H⋯O hydrogen bond, which generates an S(6) ring and the O and S atoms have an anti disposition. In the crystal, molecules are linked by N—H⋯S and N—H⋯O hydrogen bonds, generating separate [130] and [1-30] infinite chains. Weak C—H⋯O and C—H⋯S interactions are also observed.

Crystal structure of 2-methyl-N-[(4-methyl-pyridin-2-yl)carbamo-thio-yl]benzamide.

In the title compound, C15H15N3OS, there is an intramolecular N—H⋯O hydrogen bond and an intramolecular C—H⋯S hydrogen bond involving the C=O and C=S bonds which lie on opposite sides of the molecule. The molecule is non-planar with the benzene and pyridine rings being inclined to one another by 26.86 (9)°. In the crystal, molecules are linked by pairs of N—H⋯S hydrogen bonds, forming inversion dimers with an R 2 2(8) ring motif. The dimers are linked via C—H⋯S hydrogen bonds, forming slabs parallel to the bc plane.

Crystal structure of 1-{3-(4-methyl­phen­yl)-5-[(E)-2-phenyl­ethen­yl]-4,5-di­hydro-1H-pyrazol-1-yl}ethan-1-one

The title compound, C20H20N2O, was studied as a part of our work on pyrazoline derivatives. It represents a trans-isomer. The central pyrazoline ring adopts an envelope conformation with the asymmetric C atom having the largest deviation of 0.107 (1) Å from the mean plane. It forms dihedral angles of 6.2 (1) and 86.4 (1)° with the adjacent p-tolyl and styrene groups, respectively. In the crystal, C—H⋯O interactions link molecules into infinite chains along the c axis.

Crystal structure of 5-[4-(dimethylamino)phenyl]-3-(4-methylphenyl)-4,5-dihydro-1H-pyrazole-1-carbaldehyde

The title compound, C19H21N3O, comprises a central pyrazole ring which is N-connected to an aldehyde group and C-connected twice to substituted benzene rings. The pyrazole ring is twisted on the C—C single bond, and the least-squares plane through this ring forms dihedral angles of 82.44 (5) and 4.52 (5)° with the (dimethylamino)benzene and p-tolyl rings, respectively. In the crystal, weak C—H⋯O hydrogen bonds link molecules into supramolecular tubes along the b axis.

Crystal structure of 3-(4-methyl­phen­yl)-1-phenyl-5-[(E)-2-phenyl­ethen­yl]-1H-pyrazole

In the title compound, C24H20N2, the dihedral angles between the pyrazole ring and the pendant phenyl, toluoyl and phenylethenyl rings are 41.50 (8), 4.41 (8) and 31.07 (8)°, respectively. In the crystal, inversion dimers linked by a π–π stacking interactions between the phenylethenyl rings are observed [centroid–centroid separation = 3.5857 (9) Å].

Crystal structure of 5-(4-meth­oxy­phen­yl)-3-(4-methyl­phen­yl)-4,5-di­hydro-1H-pyrazole-1-carbaldehyde

In the title compound, C18H18N2O2, the pyrazole ring has a twisted conformation on the CH—CH2 bond. The tolyl ring and the 4-methoxyphenyl ring are inclined to the mean plane of the pyrazole ring by 4.40 (9) and 86.22 (9)°, respectively, while the two aromatic rings are inclined to one another by 88.75 (9)°. In the crystal, molecules are linked via bifurcated C—H⋯(O,O) hydrogen bonds and C—H⋯π interactions, forming sheets lying parallel to the ab plane.

Crystal structure of 2-methyl-N-{[2-(pyri­din-2-yl)eth­yl]carbamo­thio­yl}benzamide

In the title compound, C16H17N3OS, a benzoyl thiourea derivative, the planes of the pyridine and benzene rings are inclined to one another by 66.54 (9)°. There is an intramolecular N—H⋯O hydrogen bond present forming an S(6) ring motif. In the crystal, molecules are linked via pairs of N—H⋯N hydrogen bonds, forming inversion dimers, which are reinforced by pairs of C—H⋯S hydrogen bonds. The dimers are linked via C—H⋯π interactions, forming ribbons along [010].