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In the title compound, C22H19NO2S, the cyclo­hexene ring adopts a slightly distorted half-chair conformation. The dihedral angles between the mean planes of the thio­phene ring and the phenyl and 2-hy­droxy­phenyl rings are 70.4 (5) and 12.1 (9)°, respectively. The phenyl and 2-hy­droxy­phenyl rings are twisted with respect to one another by 81.0 (6)°. A short intra­molecular O—H...N hydrogen bond is observed. In the crystal, weak C—H...O inter­actions link the mol­ecules into zigzag chains diagonally along [100] .

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The title compound, C24H20N2OS, crystallizes with two independent mol­ecules (A and B) in the asymmetric unit, in each of which the cyclo­hexene rings adopt half-chair conformations. The mean plane of the indole ring is twisted from those of the phenyl and thio­phene rings by 69.0 (7) and 8.3 (5)°, respectively, in mol­ecule A and by 65.4 (9) and 6.7 (5)°, respectively, in mol­ecule B. The dihedral angles between the mean planes of the phenyl and thio­phene rings are 63.0 (4) and 58.8 (9)° in mol­ecules A and B, respectively. In the crystal, N—H...O hydrogen bonds lead to the formation of an infinite chain along [101]. In addition, π–π stacking inter­actions are observed involving the thio­phene and pyrrole rings of the two mol­ecules, with a shortest inter­centroid distance of 3.468 (2) Å.

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In the title compound, C22H19NOS, the cyclo­hexene ring of the tetra­hydro­benzo­thio­phenyl ring system adopts a slightly distorted half-chair conformation and is twisted slightly [7.5 (8)° for the major disorder component] from the mean plane of the thio­phene ring. The dihedral angles between the mean planes of the thio­phene ring and the phenyl rings are 65.7 (3) and 8.3 (4)°. The phenyl rings are twisted with respect to each other by 73.8 (7)°. Disorder was modeled for four C atoms of the cyclo­hexene ring over two sets of sites with an occupancy ratio of 0.659 (2):0.341 (2). In the crystal, a single weak C—H...O inter­action links the mol­ecules into [001] chains.

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In the title compound, C23H20BrNO2S, disorder was modeled for the outer two C atoms of the cyclo­hexene ring over two sets of sites with an occupancy ratio of 0.580 (11):0.420 (11). Both rings have a half-chair conformation. The dihedral angles between the mean plane of the thio­phene ring and the benzene and phenyl rings are 9.2 (2) and 66.1 (2)°, respectively. The benzene and phenyl rings are inclined to each other by 74.8 (8)°. In the crystal, mol­ecules are linked by pairs of C—H...O hydrogen bonds, forming inversion dimers.

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In the title compound, C19H18N4O4, the nitro­phenyl and phenyl rings are twisted by 67.0 (6) and 37.4 (4)°, respectively, with respect to the pyrazole ring plane [maximum deviation = 0.0042 (16) Å]. The dihedral angle between the mean planes of the phenyl rings is 59.3 (3)°. The amide group, with a C—N—C—C torsion angle of 177.54 (13)°, is twisted away from the plane of the pyrazole ring in an anti­periplanar conformation. In the crystal, N—H...O hydrogen bonds involving the carbonyl group on the pyrazole ring and the amide group, together with weak C—H...O inter­actions forming R22(10) graph-set motifs, link the mol­ecules into chains along [100]. Additional weak C—H...O inter­actions involving the nitro­phenyl rings further link the mol­ecules along [001], also forming R22(10) graph-set motifs, thereby generating (010) layers.

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In the title compound, C22H18N2O3S, disorder is found in the benzoyl group (A and B), as well as for four C atoms of the cyclo­hexene ring. Two orientations were modeled in a 0.583 (5):0.417 (5) ratio. The cyclo­hexene ring is in a distorted chair conformation. The dihedral angles between the mean plane of the thio­phene ring and the 4-nitro­benzene and phenyl rings are 30.9 (8) and 64.8 (3) (A) and 62.4 (7)° (B). The mean planes of the 4-nitro­benzene and the phenyl rings are almost perpendicular to each other, with dihedral angles of 85.4 (1) (A) and 83.9 (8)° (B). An extensive array of weak C—H...O inter­actions consolidate mol­ecules into a three-dimensional architecture, forming chains along [001] and [010] and layers parallel to (011).
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