[2-(3,4-Dimethyl­benzo­yl)phen­yl](4-meth­oxy­phen­yl)methanone

The title mol­ecule, C₂₃H₂₀O₃, is disordered with a 180° rotation about an axis normal to the length of the mol­ecule, with the major and minor components in a 0.545 (5):0.455 (5) ratio. In the major component, the central benzene ring forms dihedral angles of 72.34 (3) and 69.46 (3)° with the dimethyl-substituted and meth­oxy-substituted benzene rings, respectively. Moreover, the central benzene ring forms dihedral angles of 50.86 (5) and 58.43 (4)° with the mean planes of the ketone groups. In the minor component, the corresponding dihedral angles between the benzene rings are 71.36 (4) and 67.94 (4)° and the dihedral angles between the benzene ring and the ketone groups are 56.44 (9) and 55.51 (8)°. In the crystal, C—H...O inter­actions generate a C(9) chain along the a-axis direction.

6-Phenyl­benzo[d]naphtho­[2,3-b]thio­phene

In the title compound, C₂₂H₁₄S, the r.m.s. deviation from the mean plane of the four-fused-ring naphtho­thio­phene unit is 0.056 Å. The dihedral angle between the naphtho­thio­phene plane and the pendant phenyl ring is 67.24 (6)°. In the crystal, weak C—H...π and π–π stacking [minimum centroid–centroid separation = 3.7466 (10) Å] inter­actions are observed, which together lead to (010) sheets.

Diethyl 1,8-diphenyl-11-oxatricyclo­[6.2.1.0^2,7]undeca-2,4,6-triene-9,10-dicarboxyl­ate

The title compound, C₂₈H₂₆O₅, is the Diels–Alder adduct from 1,3-diphenyl­benzo[c]furan and diethyl maleate. The mol­ecule comprises of a fused tricyclic system containing two five-membered rings, which are in envelope conformations with the O atom at the flap, and a six-membered ring adopting a boat conformation. The dihedral angle between phenyl substituents in the 1,8-positions is 55.1 (1)°. The ethyl groups are disordered over two sets of sites, with occupancy ratios of 0.648 (9):0.352 (9) and 0.816 (1):0.184 (1). In the crystal, pairs of C—H...π inter­actions link the mol­ecules into inversion dimers.

Dimethyl 1-(4-methyl­phen­yl)-8-(thio­phen-2-yl)-11-oxatricyclo­[6.2.1.0^2,7]undeca-2,4,6,9-tetra­ene-9,10-dicarboxy­late

The title compound, C₂₅H₂₀O₅S, is the product of a Diels–Alder reaction. The mol­ecule consists of a fused tricyclic system containing two five-membered rings and one six-membered ring. The five-membered rings both show an envelope conformation with the O atom at the flap, whereas the six-membered ring adopts a boat conformation. The thio­phene ring is disordered over two sets of sites with an occupancy ratio of 0.53 (1):0.47 (1). The dihedral angles between the 4-methyl­phenyl ring and the major and minor components of the thio­phene ring are 66.3 (1) and 67.9 (1)°, respectively, while the dihedral angle between the disordered thio­phenyl components is 3.1 (1)°. The mean plane of the tricyclic ring system makes dihedral angles of 35.8 (1), 30.8 (1) and 32.8 (1)°, respectively, with the 4-methyl­phenyl ring and the major and minor components of the thio­phenyl ring. In the crystal, inversion dimers are formed through pairs of C—H...π inter­actions. In addition, C—H...O inter­actions are observed.

Diethyl 1,8-bis­(4-methyl­phen­yl)-11-oxatricyclo­[6.2.1.0^2,7]undeca-2,4,6-triene-9,10-dicarboxyl­ate

The title compound, C₃₀H₃₀O₅, is the Diels–Alder adduct from 1,3-diphenyl­benzo[c]furan and diethyl maleate. The mol­ecule comprises a fused tricyclic system containing two five-membered rings, which are in envelope conformations with the O atom at the flap, and a six-membered ring adopting a boat conformation. The dihedral angle between the 4-methyl­phenyl substituents in the 1- and 8-positions is 62.1 (1)°. The ethyl group of one ester group and the eth­oxy group of the other ester group are disordered over two sets of sites, with occupancy ratios of 0.43 (2):0.57 (2) and 0.804 (7):0.196 (7), respectively. In the crystal, inversion dimers are formed through pairs of C—H...O inter­actions.

Dimethyl 1,8-bis­(4-methyl­phen­yl)-11-oxatri­cyclo­[6.2.1.0^2,7]undeca-2,4,6,9-tetra­ene-9,10-di­carboxyl­ate

The title compound, C₂₈H₂₄O₅, consists of a fused tricyclic system containing two five-membered rings and one six-membered ring. The five-membered rings both exhibit an envelope conformation with the O atom at the flap, whereas the six-membered ring adopts a boat conformation. The dihedral angle between the 4-methyl­phenyl rings at the 1,8-positions is 76.4 (1)°. In the crystal, mol­ecules are stacked in columns along the a axis through C—H...O inter­actions.

(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 66.56 (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.

2-(4-Chloro-2-nitro­phen­yl)-9-phenyl­sulfonyl-9H-carbazole-3-carbaldehyde

In the title compound, C₂₅H₁₅ClN₂O₆S, the carbazole ring system is essentially planar, with a maximum deviation of 0.152 (3) Å for the C atom to which the 4-chloro-2-nitro­phenyl ring is attached. Its mean plane is almost orthogonal to the phenyl­sulfonyl and nitro­phenyl rings, making dihedral angles of 82.64 (14) and 79.89 (13)°, respectively. The N atom of the nitro group deviates by 0.032 (3) Å from the benzene ring to which it is attached. The mol­ecular structure features intra­molecular O—H...O and C—H...O hydrogen bonds, which generate three S(6) ring motifs. In the crystal, mol­ecules are linked by C—H...O hydrogen bonds, which generate C(6) and C(9) chains running in the [100] and [010] directions, respectively, forming a two-dimensional network lying parallel to (001). There are also R₄³(28) supra­molecular graph-set ring motifs enclosed within these networks.

1-{2-[(E)-2-(2-Nitro­phen­yl)ethen­yl]-1-phenyl­sulfonyl-1H-indol-3-yl}ethanone

In the title compound, C₂₄H₁₈N₂O₅S, the S atom has a distorted tetra­hedral configuration, with bond angles varying from 105.11 (7) to 119.98 (8)°. As a result of the electron-withdrawing character of the phenyl­sulfonyl group, the N—Csp² bond lengths [1.414 (2) and 1.413 (2) Å] are slightly longer than the reported value of 1.355 (14) Å for N atoms with a planar configuration. The indole moiety is essentially planar, with a maximum deviation of 0.0177 (14) Å for the N atom. The phenyl ring of the sulfonyl substituent makes a dihedral angle of 85.70 (7)° with the mean plane of the indole moiety. The mol­ecular structure features intra­molecular C—H...O hydrogen bonds, which generate S(6) and S(12) ring motifs. In the crystal, adjacent mol­ecules are linked via C—H...O hydrogen bonds, forming infinite C(7) chains running along the a-axis direction. The crystal packing also features C—H...π inter­actions, which form a three-dimensional structure.

(E)-1-[2-(4-Fluoro-2-nitro­styr­yl)-1-phenyl­sulfonyl-1H-indol-3-yl]propan-1-one

In the title compound, C₂₅H₁₉FN₂O₅S, the substituted phenyl ring makes a dihedral angle of 12.26 (9)° with the indole ring system. The nitro group is twisted at an angle of 26.92 (8)° out of the plane of the ring to which it is attached. The mol­ecular structure is stabilized by weak C—H...O hydrogen bonds. In the crystal, weak C—H...O, C—H...F and π–π [centroid–centroid distance = 3.6645 (11) Å] inter­actions link the mol­ecules, forming a three-dimensional network.

(Z)-3-(1-Chloro­prop-1-en­yl)-2-methyl-1-phenyl­sulfonyl-1H-indole

In the title compound, C₁₈H₁₆ClNO₂S, the indole ring system forms a dihedral angle of 75.07 (8)° with the phenyl ring. The mol­ecular structure is stabilized by a weak intra­molecular C—H...O hydrogen bond. In the crystal, mol­ecules are linked by weak C—H...O hydrogen bonds, forming a chain along [10-1]. C—H...π inter­actions are also observed, leading to a three-dimensional network.

(E)-1-[2-(4-Chloro-2-nitro­styr­yl)-1-phenyl­sulfonyl-1H-indol-3-yl]propan-1-one

In the title compound, C₂₅H₁₉ClN₂O₅S, the phenyl ring forms dihedral angles of 79.62 (12) and 80.02 (13)° with the indole ring system and the benzene ring, respectively. The nitro group is twisted at an angle of 22.39 (11)° with respect to the attached benzene ring. In the crystal, mol­ecules assemble into double layers in the ab plane via C—H...O inter­actions.

1-(2-Bromo­meth­yl-1-phenyl­sulfonyl-1H-indol-3-yl)propan-1-one

In the title compound, C₁₈H₁₆BrNO₃S, the dihedral angle between the phenyl ring and the indole ring system is 89.91 (11)°. The mol­ecular structure features weak C—H...O and C—H...Br hydrogen bonds. In the crystal, mol­ecules are linked by weak C—H...O hydrogen bonds, forming chains along the a-axis direction. The chains are further linked by C—H...π inter­actions, forming a layer parallel to the ab plane.