In the title compound, C(22)H(18)O(2), the central benzene ring forms dihedral angles of 76.0 (1) and 73.1 (1)° with the phenyl ring and dimethyl-substituted benzene ring, respectively. The carbonyl-group O atoms deviate significantly from the phenyl ring and the dimethyl-substituted benzene ring [-0.582 (12) and 0.546 (12) Å, respectively]. The crystal packing is stabilized by C-H⋯π inter-acti...

The seven-membered ring in the title compound, C(18)H(16)N(2)O, adopts a boat conformation with the two phenyl-ene carbons representing the stern and the methyl-ene C atom the prow. The dihedral angle between the best plane through the seven-membered ring and the phenyl ring is 62.13 (3)°.

IN THE TITLE COMPOUND [SYSTEMATIC NAME: 4-(2,3-dibromo-3-phenyl-propano-yl)-3-phenyl-1,2,3-oxadiazol-3-ylium-5-olate], C(17)H(12)Br(2)N(2)O(3), the oxadiazole ring is essentially planar, with a maximum deviation of 0.001 (3) Å. The central oxadiazole ring makes dihedral angles of 73.3 (2) and 29.0 (2)° with the adjacent and remote phenyl rings, respectively. In the crystal, adjacent mol-ecules ...

In the the title compound, C(27)H(23)ClN(4)O(2), the chloro-phenyl ring forms dihedral angles of 77.70 (9) and 86.65 (9)°, respectively, with the pyrazol-3-one and pyrazole rings. The phenyl rings attached to the pyrazole rings are twisted away from them [dihedral angles 33.80 (9) and 40.34 (10)°]. An intramolecular O-H⋯O hydrogen bond generates an S(8) ring motif. The mol-ecules are linked int...

In the title compound, C(18)H(18)O(2)S, the O atom and the phenyl group of the phenyl-sulfinyl substituent lie on opposite sides of the planar benzofuran fragment. The phenyl ring is nearly perpendicular to the benzofuran system [88.56 (7)°] and is tilted slightly towards it. Molecules form pseudo-helices along the a axis. The crystal structure is stabilized by a C-H⋯π inter-action between a me...

In the title compound, C(24)H(16)O(2)S, the O atom and the phenyl group of the phenyl-sulfinyl substituent lie on opposite sides of the plane of the naphthofuran fragment; the phenyl ring is almost perpendicular to this plane [81.54 (5)°]. The 2-phenyl ring is rotated out of the naphthofuran plane, making a dihedral angle of 18.2 (1)°.

In the title compound, C(22)H(13)ClN(2), the quinoxaline ring system is close to planar [maximum deviation = 0.061 (2) Å]. The phenyl ring at the 2-position and the phenyl ring of the phenyl-ethynyl substituent make dihedral angles of 49.32 (7) and 11.99 (7) °, respectively, with the quinoxaline mean plane. The two phenyl rings are inclined to one another by 61.27 (9)°. In the crystal, mol-ecul...

In the title compound, C(18)H(16)N(2)O(2), the phenyl-ene ring is located on inversion center. The pyridyl ring makes a dihedral angle of 39.9 (1)° with the phenyl-ene ring. In the crystal, adjacent mol-ecules are linked by inter-molecular C-H⋯N hydrogen bonds, forming a linear chain along the a axis.

Benzodiazepines are useful drugs for treatment of sleep disorders, anxiety, seizure cases and skeletal muscle cramps. Some derivatives of 2-(2-Phenoxy) phenyl-1, 3, 4-oxadiazole were synthesized as benzodiazepine receptor agonists. Conformational analysis and superimposition of energy minima conformers of the compounds on estazolam, a known benzodiazepine agonist, reveal that the main proposed ...

The title compound, C19H20N4O3S, was synthesized by refluxing equimolar amounts of 1-phenyl-3-methyl-4-propionylpyrazol-5-one and benzene-sulfonyl hydrazide in ethanol. The compound crystallizes in the keto form and the carbonyl O atom forms an intra-molecular N-H⋯O hydrogen bond with the neighbouring NH group. There is also C-H⋯O short contact involving the neighbouring phenyl ring. Probably a...