Crystal structure of 2-[4-(4-chlorophen-yl)-1-(4-methoxyphenyl)-2-oxoazetidin-3-yl]benzo[de]isoquinoline-1, 3-dione dimethyl sulfoxide monosolvate

Acknowledgements The authors are indebted to the X-ray laboratory of Dicle University Scientific and Technological Applied and Research Center, Diyarbakir, Turkey, for use of the X-ray diffractometer. AJ and JAR thank the Shiraz University Research Council for financial support (grant No. 93-GR–SC-23).Peer reviewedPublisher PD

N-[5-Methyl-2-(2-nitro­phen­yl)-4-oxo-1,3-thia­zolidin-3-yl]pyridine-3-carboxamide monohydrate

In the title compound, C16H14N4O4S·H2O, the benzene and pyridine rings make a dihedral angle of 85.8 (1)°. Both enanti­omers of the chiral title compound are statistically disordered over the same position in the unit cell. The methyl and carbonyl group attached to the stereogenic center (C5 of the thia­zolidine ring) were therefore refined with common site-occupation factors of 0.531 (9) and 0.469 (9), respectively, for each stereoisomer. In the crystal, inter­molecular N—H⋯O, O—H⋯O and O—H⋯N hydrogen bonds link the mol­ecules, forming a three-dimensional supra­molecular network. The crystal structure further shows π–π stacking inter­actions [centroid–centroid distance = 3.5063 (13) Å] between the pyridine rings

4-(9-Anthr­yl)-1-(3-bromo­phen­yl)spiro­[azetidine-3,9′-xanthen]-2-one

In the title mol­ecule, C35H22BrNO2, the four-membered ring of the β-lactam unit is nearly planar [maximum deviation = 0.003 (3) Å] and makes dihedral angles of 87.07 (15), 59.80 (16) and 20.81 (19)°, respectively, with the xanthene system, the anthracene system and the bromo-substituted benzene ring. The mol­ecular conformation is stabilized by weak intra­molecular C—H⋯O and C—H⋯N hydrogen bonds. The crystal structure features weak C—H⋯π inter­actions

4-(Methyl­amino)benzoic acid

The asymmetric unit of the title compound, C8H9NO2, contains three crystallographically independent mol­ecules, which are essentially planar, the carboxyl O atoms deviating by 0.091 (3), 0.101 (2) and 0.164 (3) Å from the mean plane through the non-H atoms. In the crystal, all three mol­ecules form O—H⋯O hydrogen-bonded about inversion centers, forming eight-membered rings with graph-set notation R 2 2(8). In addition, N—H⋯O hydrogen bonding and C—H⋯π inter­actions reinforce the packing

4-(9-Anthr­yl)-1-phenylspiro­[azetidine-3,9′-xanthen]-2-one

The β-lactam ring of the title compound, C35H23NO2, is nearly planar with a maximum deviation of 0.003 (3) Å from the mean plane. It makes dihedral angles of 17.4 (2), 85.22 (17) and 65.39 (16)°, respectively, with the phenyl, xanthene and anthracene ring systems. In the crystal structure, there are intra­molecular C—H⋯O and C—H⋯N contacts and mol­ecules are also linked by C—H⋯π inter­actions

2,4-Dibromo-2,3-dihydro-1H-inden-1-yl acetate

In the title compound, C11H10Br2O2, the cyclo­pentene ring fused to the benzene ring adopts an envelope conformation, with the C atom attached to the Br atom as the flap. The crystal structure does not exhibit any classical hydrogen bonds. The mol­ecular packing is stabilized by van der Waals forces and π–π stacking inter­actions with a centroid–centroid distance of 3.811 (4) Å

2-[2-(2,6-Dichloro­anilino)phen­yl]-N′-(4-propyl­cyclo­hexyl­idene)acetohydrazide

The asymmetric unit of the title compound, C23H27Cl2N3O, contains two crystallographically independent mol­ecules in which the dihedral angles between the benzene rings are 70.1 (3) and 63.8 (3)°. In each mol­ecule an intra­molecular N—H⋯O hydrogen bond generates an S(7) ring. The atoms of the propyl grouping of one mol­ecule are disordered over two orientations with occupancies of 0.666 (6) and 0.334 (6). The crystal structure is stabilized by N—H⋯O and C—H⋯O hydrogen-bonding inter­actions

3,6,8-Tribromo­quinoline

The title mol­ecule, C9H4Br3N, is almost planar, the maximum deviation being 0.110 (1) Å. The crystal structure is stabilized by weak aromatic π–π inter­actions [centroid–centroid distance = 3.802 (4) Å] between the pyridine and benzene rings of the quinoline ring systems of adjacent mol­ecules

5-Amino-4-bromo-2,3-dihydro-1H-inden-1-one

In the title compound, C9H8BrNO, the non-H-atom framework is essentially planar, with a maximum deviation of 0.087 (3) Å. In the crystal, mol­ecules are inter­connected into a three-dimensional network by C—H⋯O and N—H⋯O hydrogen bonds. In addition, C—H⋯π inter­actions and a π–π stacking inter­action, with a centroid–centroid distance of 3.5535 (19) Å, are also observed

5-Fluoro-N′-[(E)-4-methoxy­benzyl­idene]-3-phenyl-1H-indole-2-carbohydrazide

In the title mol­ecule, C23H18FN3O2, the mean plane of the indole system forms dihedral angles of 44.23 (8) and 14.54 (7)°, respectively, with the phenyl and benzene rings. In the crystal, inter­molecular N—H⋯O hydrogen bonds link mol­ecules into two-layer ribbons extended along the b axis. The crystal packing also exhibits weak inter­molecular C—H⋯O, C—H⋯F and C—H⋯π inter­actions