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The asymmetric unit of the title compound, C26H18N6O4S, contains two independent molecules (A and B). The dihedral angles between the oxadiazole ring and naphthalene ring system are 42.59 (14) and 6.88 (14) Å in molecules A and B, respectively. The dihedral angles between the pyridine and benzene rings in A and B are 65.53 (13 )and 87.67 (13) Å, respectively. In the crystal, molecules A and B are linked through a pair of N—H
N hydrogen bonds involving one -NH2 group H atom and second pair of N—HN hydrogen bonds involving the other -NH2 group H atom, forming an –ABAB– ribbon along [100] containing R22(8) and R22(12) ring motifs. These ribbons are further connected by weak C—HN, C—HO and C—Hπ interactions, resulting in a three-dimensional network. The crystal studied was a non-merohedral twin with refined components 0.906 (1):0.094 (1).
N hydrogen bonds involving one -NH2 group H atom and second pair of N—HN hydrogen bonds involving the other -NH2 group H atom, forming an –ABAB– ribbon along [100] containing R22(8) and R22(12) ring motifs. These ribbons are further connected by weak C—HN, C—HO and C—Hπ interactions, resulting in a three-dimensional network. The crystal studied was a non-merohedral twin with refined components 0.906 (1):0.094 (1).organic compoundsOpen access
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In the title compound, C18H15N3O5S, the approximately planar quinazoline ring system [maximum deviation = 0.097 (3) Å] forms a dihedral angle of 76.53 (19)° with the phenyl ring. The terminal -C(=O)—O—C group is disordered over two sets of sites with a site-occupancy ratio of 0.811 (17):0.189 (17). In the crystal, molecules are linked via weak C—HO hydrogen bonds into sheets parallel to the ac plane.
O hydrogen bonds into sheets parallel to the ac plane.organic compoundsOpen access
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In the molecule of title pyrazoline derivative, C17H18N4OS, the pyrazole ring adopts an envelope conformation with the flap atom, which bears the methoxyphenyl substituent, displaced by 0.0750 (12) Å from the plane through the other ring atoms. The two substituted benzene rings make a dihedral angle of 70.59 (6)°. The methoxy group is twisted slightly with respect to the attached benzene ring [Cmethyl—O—C—C torsion angle = −8.84 (15)°]. An intramolecular N—HN hydrogen bond occurs. In the crystal, the pyrazoline molecules are linked by N—HO and N—HS hydrogen bonds into zigzag layers parallel to the bc plane and stacked along the a axis by π–π interactions with centroid–centroid distances of 3.4690 (7) and 3.5792 (7) Å. C—Hπ interactions are also present.
N hydrogen bond occurs. In the crystal, the pyrazoline molecules are linked by N—HO and N—HS hydrogen bonds into zigzag layers parallel to the bc plane and stacked along the a axis by π–π interactions with centroid–centroid distances of 3.4690 (7) and 3.5792 (7) Å. C—Hπ interactions are also present.organic compoundsOpen access
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The title compound, C15H15NO4S, was obtained by the condensation of 4-aminoacetophenone and 4-methoxybenzenesulfonyl chloride. The dihedral angle between the benzene rings is 86.56 (9)° and the molecule has an approximate V-shaped conformation. The C atom of the methoxy group is roughly coplanar with its attached ring [deviation = 0.177 (3) Å], as is the methyl C atom of the acetyl group with its ring [deviation = 0.065 (2) Å]. An intramolecular C—HO interaction generates an S(6) ring. In the crystal, N—HO and C—HO hydrogen bonds link the molecules into [010] chains. Weak C—Hπ interactions are also observed.
O interaction generates an S(6) ring. In the crystal, N—HO and C—HO hydrogen bonds link the molecules into [010] chains. Weak C—Hπ interactions are also observed.organic compoundsOpen access
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In the title compound, C26H37N5S, the piperazine ring adopts a chair conformation with the exocyclic N-C bonds in pseudo-equatorial orientations. The piperazine ring (all atoms) subtends dihedral angles of 79.47 (9) and 73.07 (9)° with the triazole and benzene rings, respectively, resulting in an approximate U-shape for the molecule. No significant intermolecular interactions are observed in the crystal.
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In the title compound, C20H26N2S, the N-containing six-membered ring adopts a boat conformation and the dihedral angle between the thiocarbamide group and the benzene ring is 49.67 (9)°. An intramolecular C—HS hydrogen bond generates an S(6) ring motif. The N—H group is sterically hindered and there are no significant intermolecular interactions beyond van der Waals contacts.
S hydrogen bond generates an S(6) ring motif. The N—H group is sterically hindered and there are no significant intermolecular interactions beyond van der Waals contacts.
