G. Anbalagan

2,4-Diiodo-6-{[4-(morpholin-4-yl)phenyl]iminomethyl}phenol

In the title compound, C17H16I2N2O2, the two aromatic rings are almost coplanar [dihedral angle 2.57u2005(15)°]. The morpholine ring adopts a chair conformation. The molecular structure is stabilized by an O—H⋯N hydrogen bond and the crystal packing exhibits weak intermolecular C—H⋯O and π–π [centroid-to-centroid distances 3.663u2005(3)-4.073u2005(3)u2005Å] interactions.

(E)-1-[2-(2-Nitro­styr­yl)-1-phenyl­sulfonyl-1H-indol-3-yl]propan-1-one

In the title compound, C25H20N2O5S, the phenyl ring makes dihedral angles of 89.88u2005(8) and 13.98u2005(8)°, respectively, with the indole ring system and the nitrobenzene ring. The dihedral angle between the indole ring system and the nitrobenzene ring is 88.48u2005(11)°. The molecular structure is stabilized by a weak intramolecular C—H⋯O interaction. In the crystal, π–π interactions, with centroid–centroid distances of 3.6741u2005(18) and 3.8873u2005(17)u2005Å, link the molecules into layers parallel to the ab plane.

Methyl 6-(4-chloro-phen-yl)-2,4-dimethyl-1,3-dioxo-1,2,3,4,6,6a,7,12b-octa-hydro-chromeno[4',3':4,5]pyrano[2,3-d]pyrimidine-6a-carboxyl-ate.

In the title compound, C24H21ClN2O6, the two fused six-membered pyran rings adopt half-chair conformations. The dihedral angle between the pyrimidine ring and the chlorophenyl ring is 51.55u2005(3)°. In the crystal, molecules are linked by pairs of weak intermolecular C—H⋯O hydrogen bonds, forming inversion dimers. A C—H⋯π interaction is also observed.

7-Phenyl­sulfonyl-2,3-dihydro-7H-1,4-benzodioxino[6,7-b]carbazole

In the title compound, C24H17NO4S, the phenyl ring makes a dihedral angle of 88.12u2005(5)° with the carbazole unit. The molecular structure is stabilized by weak intramolecular C—H⋯O interactions and the crystal packing exhibits weak intermolecular C—H⋯O and C—H⋯π interactions. Two C atoms of the 2,3-dihydro-1,4-dioxine fragment are disordered over two positions with site-occupancy factors of 0.718u2005(11) and 0.282u2005(11).

(E)-2-Bromo-1-[2-(2-nitro-styr-yl)-1-phenyl-sulfonyl-1H-indol-3-yl]ethanone.

In the title compound C24H17BrN2O5S, the phenyl ring makes dihedral angles of 85.4u2005(2) and 8.8u2005(2)° with the indole ring system and the nitrobenzene ring, respectively, while the indole ring system and nitrobenzene ring make a dihedral angle of 80.1u2005(2)°. In the crystal, weak C—H⋯O interactions link the molecules, forming a two-dimensional network parallel to the bc plane.

(Naphthalen-1-yl){2-[(5,6,7,8-tetrahydronaphthalen-2-yl)carbonyl]phenyl}methanone.

The title compound C28H22O2, basically consists of three ring systems, viz. a central benzene ring, with a lateral napthalene group to which it subtends a dihedral angle of 66.56u2005(4)° and a tetrahydropyran ring exhibiting a half-chair conformation. The molecular structure is stabilized by a weak intramolecular C—H⋯O interaction, while the crystal packing features weak C—H⋯π contacts.

4-[(E)-(4-Diethyl­amino-2-hy­droxy­benzyl­idene)amino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one

In the title compound, C22H26N4O2, the phenyl ring and hydroxybenzene group are twisted with respect to the central pyrazolone ring, making dihedral angles of 54.05u2005(5) and 21.80u2005(6)°, respectively. One of the ethyl groups is disordered over two positions with site occupancies of 0.872u2005(6) and 0.128u2005(6). The molecular structure features short intramolecular O—H⋯N and C—H⋯O contacts. The crystal packing exhibits weak intermolecular C—H⋯O and C—H⋯π interactions.

2-(4-Methyl­phen­yl)-1-phenyl­sulfonyl-3-nitro-1,2-dihydro­quinoline

In the title compound, C22H18N2O4S, the dihedral angle between the phenylsulfonyl ring and the methylphenyl ring is 67.78u2005(7)°. In the crystal, molecules are linked by weak intermolecular C—H⋯O interactions into a zigzag chain along the [101] direction.

5-Meth­oxy-2-{[4-(morpholin-4-yl)phen­yl]imino­meth­yl}phenol

In the title compound, C18H20N2O3, the dihedral angle between the two aromatic rings is 33.66u2005(6)°. The morpholine ring adopts a chair conformation. The molecular structure is stabilized by an intramolecular O—H⋯N hydrogen bond. In the crystal, molecules are linked via weak intermolecular C—H⋯O and C—H⋯π interactions.

(Acetoxy)(2-methylphenyl)methyl acetate

In the title compound, C12H14O4, the two acetoxy groups are inclined by 57.92u2005(5)° and 62.71u2005(6)° to the benzene ring. An intermolecular C—H⋯O interaction involving the two acetoxy groups generates a centrosymmetric dimer via an R 2 2(16) ring motif.