organic compounds
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In the title compound, C22H16O, the six-membered ring within the anthrone moiety adopts a shallow boat conformation, with puckering parameters Q = 0.2860 (17) Å, Θ = 99.1 (3)° and Φ = 114.8 (3)°. The dihedral angle between the outer benzene rings is 26.53 (8)°. The mean plane through the anthrone ring system makes a dihedral angle of 38.73 (6)° with the pendant benzene ring. In the crystal, molecules are linked by C—HO hydrogen bonds into zigzag chains propagating along the c-axis direction and weak C—Hπ interactions further consolidate the structure.
organic compounds
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In the title compound, C26H12FNO6, the central pyran ring and both benzopyran systems are nonplanar, having total puckering amplitudes of 0.139 (2), 0.050 (1) and 0.112 (2) Å, respectively. The central pyran ring adopts a boat conformation. The crystal structure is stabilized by C—HO, N—HO, N—HF and C—Hπ interactions.
organic compounds
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The asymmetric unit of the title compound, C26H12ClNO6, consists of two independent molecules. The central pyran rings and both the 1-benzopyran ring systems are nearly planar in both molecules [r.m.s. deviations of pyan rings = 0.0264 (1) and 0.0326 (1) Å for molecules A and B, respectively; r.m.s. deviations of benzopyran rings = 0.0439 (1) and 0.0105 (1) for molecule A, 0.0146 (1) and 0.0262 (1) Å for molecule B]. In the crystal, the molecules are linked by C—HO, N—HO and C—Hπ interactions.
organic compounds
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In the title compound, C27H15NO6·0.5CHCl3, the central pyran ring and both the benzopyran systems are planar, with the dihedral angle between the outer rings being 3.24 (6)°. The indolin-2-one system is in a perpendicular configuration with respect to the pyran ring [dihedral angle = 87.58 (2)°]. Supramolecular layers in the ac plane are formed in the crystal structure whereby inversion-related molecules are connected by N—HO hydrogen bonds. These are further linked by C—HO interactions, forming a supramolecular layer in the ac plane. Disordered CHCl3 solvent in the structure was modelled with the SQUEEZE routine in PLATON [Spek (2009). Acta Cryst. D65, 148–155].
organic compounds
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In the title compound, C34H28N2O2S, the piperidine ring adopts a chair conformation. One of the pyrrolidine rings adopts an envelope conformation with the methylene C atom at the flap whereas the other pyrrolidine ring and the thiazolidine ring adopt half-chair conformations. The mean plane of the dihydroacenaphthylene ring system [maximum deviation = 0.067 (1) Å] makes dihedral angles of 28.31 (5) and 31.32 (6)° with the two terminal benzene rings. An intramolecular O—HN hydrogen bond forms an S(5) ring motif. In the crystal, molecules are linked by C—HO and C—HS hydrogen bonds into layers lying parallel to the ac plane.
organic compounds
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In the title compound, C34H26F2N2O2S, an intramolecular O—HN hydrogen bond forms an S(5) ring motif. The piperidine ring adopts a chair conformation. The thiazolidine ring and one of the pyrrolidine rings adopt envolope conformations with methylene C atoms at the flap, whereas the other pyrrolidine ring adopts a half-chair conformation. The fluoro-substituted benzene rings form dihedral angles of 32.25 (10) and 38.27 (10)°, respectively, with the mean plane of the dihydroacenaphthylene ring system [maximum deviation = 0.043 (2) Å]. The dihedral angle between the fluoro-substituted benzene rings is 64.13 (14)°. In the crystal, molecules are linked by weak C—HO, C—HF and C—HS hydrogen bonds into a three-dimensional network.
organic compounds
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In the title compound, C40H34N2O2, the central piperidine ring adopts a half-chair conformation and the fused pyrrolidine rings adopt twisted envelope (with the C atom bearing the methylphenyl ring as the flap atom) and envelope (with the C atom bound to the N atom, common to the pyridinone and pyrrolidine rings being the flap atom) conformations. The molecular structure features weak intramolecular N—HO and C—HO interactions. In the crystal, O—HO hydrogen bonds generate a C(7) chain along the b-axis direction. C—HO interactions also occur.