organic compounds
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In the title compound, C22H18N4O2, the molecules lie across an inversion centre. The dihedral angle between the mean planes of the central and terminal benzene rings is 66.03 (2)°. The molecule displays trans and anti conformations about the C=N and N—N bonds, respectively. In the crystal, N—HO hydrogen bonds, with the O atoms of C=O groups acting as acceptors, link the molecules into a chain along [101].
organic compounds
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In the title compound, C11H10Br2O2, the cyclopentene ring fused to the benzene ring adopts an envelope conformation, with the C atom attached to the Br atom as the flap. The crystal structure does not exhibit any classical hydrogen bonds. The molecular packing is stabilized by van der Waals forces and π–π stacking interactions with a centroid–centroid distance of 3.811 (4) Å.
organic compounds
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The title Schiff base, C17H19IN2O, is not planar, displaying a dihedral angle of 34.9 (2)° between the two aromatic rings. The molecular conformation allows the formation of a strong intramolecular O—HN hydrogen bond with graph-set motif S(6) between the hydroxy group and the imine N atom.
organic compounds
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In the title compound, C15H10FNO3, the dihedral angle between the isoindoline-1,3-dione and 3-fluoro-4-methylphenol groups is 86.88 (8)°. The isoindoline-1,3-dione fragment is almost planar, with an r.m.s. deviation of 0.0154 Å within the group. Intermolecular C—HO hydrogen bonds generate C(6) chains running parallel to the [010] direction.
organic compounds
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In the title compound, C19H16ClNO, the dihedral angle between the naphthalene ring system and the chlorobenzene ring is 61.90 (10)° and the C—N—C—C torsion angle is 174.6 (2)°. The molecular structure is stabilized by an intramolecular C—HN hydrogen bond. The crystal structure features π–π stacking interactions [centroid–centroid distances = 3.7325 (17) and 3.8150 (17) Å].
organic compounds
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In the title compound, C14H11IN2O3·CH4O, the dihedral angle between the benzene rings is 33.2 (3)°. The molecule displays trans and anti conformations about the C=N and N—N bonds, respectively. There is an intramolecular O—HN(azomethine) hydrogen bond. Intermolecular N—HO and O—HO hydrogen bonds consolidate molecules into a three-dimensional architecture.
organic compounds
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In the title compound, C21H21NO, the dihedral angle between the naphthalene ring system and the benzene ring is 64.61 (6)°. The molecular structure is stabilized by an intramolecular C—HN hydrogen bond.