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In the title mol­ecule, C13H13FN2OS, the heterocyclic ring adopts a slightly distorted flattened boat conformation, and the plane through the four coplanar atoms makes a dihedral angle of 87.45 (14)° with the benzene ring. The thione, acetyl and methyl groups lie on the opposite side of the heterocyclic mean plane to the fluorophenyl group, which has an axial orientation. N—H...O, N—H...S, C—H...F and C—H...O inter­molecular hydrogen bonds and a weak C—H...π inter­action involving the benzene ring are found in the crystal structure.

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In the title Schiff-base type compound, C18H13N3O5, the central furan ring makes dihedral angles of 12.80 (7) and 51.43 (4)° with the terminal benzene rings. The dihedral angle between the benzene rings is 45.43 (3)°. In the crystal, C—H...O hydrogen bonds link the mol­ecules into layers parallel to (010). In addition, there are π–π stacking inter­actions within the layer [centroid–centroid distance = 3.584 (1) Å] and between the layers [centroid–centroid distance 3.751 (1) Å].

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The title mol­ecule, C30H24O4, lies about an inversion center located at the mid-point of the central C=C bond. The diphenyl­methanone unit adopts an all-trans conformation. The dihedral angle between the adjacent rings is 53.57 (4)°.

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In the title mol­ecule, C16H20N2OS, the heterocyclic ring adopts a slightly distorted flattened boat conformation, and the plane through the four coplanar atoms makes a dihedral angle of 86.98 (6)° with the benzene ring. The thione, acetyl and methyl groups lie on the opposite side of the heterocyclic mean plane to the isopropylphenyl group which has an axial orientation. A weak intra­molecular C—H...O hydrogen bond is observed. In the crystal, molecules are linked via N—H...O, N—H...S and C—H...S hydrogen bonds.

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The title compound, C8H17O2PS2, displays a distorted tetra­hedral geometry around the P atom. The P atom is part of a six-membered ring with an isopropyl group in the equatorial position. The mol­ecules are linked by S—H...S hydrogen bonds in the crystal packing.

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In the title mol­ecule, C19H13FN2, the benzimidazole unit is close to planar [maximum deviation = 0.0342 (9) Å] and forms dihedral angles of 58.94 (3) and 51.43 (3)° with the phenyl and fluoro­benzene rings, respectively; the dihedral angle between the phenyl and fluoro­benzene rings is 60.17 (6)°. In the crystal, three C—H...F hydrogen bonds and two weak C—H...π inter­actions involving the fused benzene ring lead to a three-dimensional architecture.

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The title compound, C19H26N2O3, crystallizes with two independent mol­ecules in the asymmetric unit which differ in the twist of the phenyl rings with respect to the plane of the amide group [the C—C—C—O torsion angles are 121.5 (3) and −119.6 (3)° in the two mol­ecules. Both cyclo­hexane rings adopt chair conformations. In the crystal, weak C—H...O inter­actions occur. The crystal studied was a non-merohedral twin with a minor component of 4.8 (1)%.

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The title compound, C17H11NO3, was an inter­mediate synthesized during bis­acyl­ation of 2-amino-1,4-naphtho­quinone with benzoyl chloride. A mixture of block- and needle-shaped crystals were obtained after column chromatography. The block-shaped crystals were identified as the imide and the needles were the title amide. The naphtho­quinone scaffold is roughly planar (r.m.s. deviation = 0.047 Å for the C atoms). The N—H and C=O bonds of the amide group are anti to each other. A dihedral angle between the naphtho­quinone ring system and the amide group of 3.56 (3)°, accompanied by a dihedral angle between the amide group and the phenyl group of 9.51 (3)°, makes the naphtho­quinone ring essentially coplanar with the phenyl ring [dihedral angle = 7.12 (1)°]. In the crystal, molecules are linked by a weak N—H...O hydrogen bond and by two weak C—H...O interactions leading to the formation of zigzag chains along [010].
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