S. Ranjith

(E)-1-[4-(Prop-2-yn-1-yl­oxy)phen­yl]-3-(3,4,5-trimeth­oxy­phen­yl)prop-2-en-1-one

The molecule of the title chalcone derivative, C21H20O5, consists of two substituted aromatic rings bridged by a prop-2-en-1-one group. The dihedral angle between the two benzene rings is 28.7 (7)°. In the crystal, molecules are linked into C(10) chains running along the a axis by intermolecular C—H⋯O hydrogen bonds, and the chains are cross-linked via C—H⋯π interactions.

3-[2-(9-Ethyl-9H-carbazol-3-yl)-6-methyl-3-quinol-yl]propan-1-ol.

In the title compound, C27H26N2O, the mean planes through the carbazole and quinoline ring systems form a dihedral angle of 67.23 (5)°. Molecules are linked into cyclic centrosymmetric dimers by O—H⋯N hydrogen bonds, and C—H⋯π interactions with the pyridine ring of the quinoline ring system as an acceptor. The dimers are linked through C—H⋯O hydrogen bonds.

2-(4-Chloro-phen-yl)-1,5-diphenyl-3-tosyl-imidazolidin-4-one.

In the title compound, C28H23ClN2O3S, the central imidazolidine ring adopts a twisted conformation and the S atom has distorted tetrahedral geometry. The crystal packing is stabilized by C—H⋯O, C—H⋯π and π–π interactions [centroid–centroid distance = 3.8302 (10) Å].

Diethyl 2-{[3-(2-meth­oxy­benz­yl)thio­phen-2-yl]methyl­idene}malonate

In the title compound, C20H22O5S, the dihedral angle between the mean planes through the thiophene and benzene rings is 75.2 (1)°. The methoxy group is essentially coplanar with the benzene ring, the largest deviation from the mean plane being 0.019 (2) Å for the O atom. The malonate group assumes an extended conformation.

2-Bromo-4-chloro-6-{(E)-[4-(diethyl­amino)­phen­yl]imino­meth­yl}phenol

In the title compound, C17H18BrClN2O, the dihedral angle between the aromatic rings is 3.0 (1)°. The methylethanamine group assumes an extended conformation. An intramolecular O—H⋯N hydrogen bond generates an S(6) ring motif. The crystal packing is stabilized by C—H⋯π and π–π [centroid–centroid distances = 3.691 (1) and 3.632 (1) Å] interactions.

N-(2-Formyl-phen-yl)benzene-sulfonamide.

In the title compound, C13H11NO3S, the two aromatic rings are oriented at an angle of 88.18 (8)°. Intramolecular N—H⋯O and C—H⋯O hydrogen bonds are observed, each of which generates an S(6) ring motif. In the crystal, molecules are linked into C(7) chains along [010] by intermolecular C—H⋯O hydrogen bonds. The structure is further stabilized by intermolecular C—H⋯π interactions involving the sulfonyl-bound phenyl ring.

5-Methyl­phenanthro[2,3-b]thio­phene

The title compound, C17H12S, which crystallises with two molecules in the asymmetric unit, features four fused rings forming an essentially planar molecule, with maximum deviations from the mean plane of 0.078 (2) and 0.080 (2) Å for C atoms of the thiophene and phenanthrene groups in both the molecules. The crystal packing features weak C—H⋯π interactions.

1-Benzyl-2,5-diphenyl-3-tosylimidazol-idin-4-one.

In the title compound, C29H26N2O3S, the central imidazolidine ring adopts an envelope conformation with the N atom bearing the benzyl ring at the flap. The S atom has distorted tetrahedral geometry. The benzyl and tosyl rings are oriented at a dihedral angle of 52.1 (1)°. The phenyl rings connected to the imidazolidine ring form a dihedral angle of 28.7 (1)°.

2-(4-Chloro­phen­yl)-5-(cyclo­hex-1-en-1-yl)-3-(4-methyl­phenyl­sulfon­yl)-1-phenyl­imidazolidin-4-one

In the title compound, C28H27ClN2O3S, the central imidazolidine ring adopts an envelope conformation with the C atom bearing the chlorophenyl ring at the flap. The geometry around the S atom is distorted tetrahedral. Three methylene groups of the cyclohexene ring are disordered over two sets of sites [site occupancies = 0.562 (10) and 0.438 (10)]. The crystal packing is stabilized by C—H⋯π interactions.

Phen­yl(3-methyl-1-phenyl­sulfonyl-1H-indol-2-yl)methanone

In the title compound, C22H17NO3S, the N atom of the indole ring system deviates by 0.031 (3) Å from a least-squares plane fitted through all nine non-H ring atoms. The geometry around the S atom can be described as distorted tetrahedral. As a result of the electron-withdrawing character of the phenylsulfonyl groups, the N—Csp 2 bond lengths are longer than the typical mean value for N atoms with a planar configuration.