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A methanol solvate of gerontoxanthone I [systematic name: 4-(1,1-dimethylprop-2-enyl)-1,3,5,6-tetrahydroxy-2-(3-methylbut-2-enyl)-9 H-xanthen-9-one methanol solvate], C23H24O6·CH3OH, is reported. Gerontoxanthone I was isolated from the roots of Cratoxylum formosum ssp. pruniflorum. The three rings in the structure are essentially coplanar. The 3-methylbut-2-enyl side chain is equatorially attached to the benzene ring, whereas the 1-methylbut-2-enyl substituent is bisectionally attached to the benzene ring. Intramolecular O—H...O hydrogen bonds generate S(5) and S(6) ring motifs. In the crystal structure, intermolecular O—H...O hydrogen bonds and C—H...O interactions connect the molecules of gerontoxanthone I into chains along the [100] direction. The crystal structure is stabilized by intra- and intermolecular O—H...O hydrogen bonds, weak C—H...O intra- and intermolecular interactions, and C—H...π interactions. [ABSTRACT FROM AUTHOR]

In the title compound, C16H11F3O, the dihedral angle between the two benzene rings is 4.66 (12)°. In the crystal structure, the molecules are interlinked into columns along the b axis by intermolecular C—H...O interactions and short O...O contacts [2.525 (8) Å]. The crystal structure is further stabilized by weak intermolecular C—H...π interactions. The linkage between the two phenyl rings is disordered over two positions in approximately a 0.6:0.4 ratio. [ABSTRACT FROM AUTHOR]

The title molecule, C10H10O4, possesses a crystallographically imposed centre of symmetry. The acetic acid unit is almost perpendicular to the benzene ring, making a dihedral angle of 84.46 (6)°. In the crystal structure, molecules are linked by intermolecular O—H...O hydrogen bonds into chains running along the [101] direction, and these chains are stacked along the b axis. [ABSTRACT FROM AUTHOR]

The title compound, C13H8Cl2O2, crystallizes with two independent molecules in the asymmetric unit. Each of the two unique molecules is twisted about the C—C single bonds, making dihedral angles of 24.29 (5) and 73.01 (5)° between the two rings. In the crystal structure, the molecules are interlinked into columns along the b axis by intermolecular O—H...O and C—H...O interactions and short Cl...Cl and O...Cl contacts. In addition, the crystal packing is further stabilized by weak C—H...π interactions. [ABSTRACT FROM AUTHOR]

In the molecular structure of the title compound, C25H21NO4·CHCl3, the indolequinone unit is essentially planar and the cyclohexen-1-one ring is in an envelope conformation. The dihedral angle between the indole and methoxyphenyl groups is 81.78 (8)°. The molecules are linked via weak intermolecular C—H...O interactions to form dimers and these dimers are stacked approximately down the b axis. The crystal structure is stabilized by weak intermolecular C—H...O interactions and C—H...π interactions. [ABSTRACT FROM AUTHOR]

In the title compound, C24H19NO3, the six-membered ring with the methyl substituents is in an envelope conformation. The crystal structure is stabilized by C—H...O, C—H...π and π–π interactions; the latter involve centroid–centroid distances of 3.680 (1) and 3.802 (1) Å. [ABSTRACT FROM AUTHOR]

The title cocrystal, 0.75C30H51O·0.25C30H50O, is a disordered mixture of two compounds, viz friedelan-3β-ol and friedelin, which were isolated from Artocarpus altilis. The compound crystallizes with two disordered molecules in the asymmetric unit. In both components, three of the five cyclo­hexane rings adopt chair conformations, one adopts a twist-boat conformation and the fifth is in a boat conformation. [ABSTRACT FROM AUTHOR]

The title compound, C13H14O4, known as 8-methyl­eugenitin, is a chromone isolated from the leaves of Mellaleuca cajuputi Powell. The chromone unit is essentially planar. The methyl and hydroxyl groups lie in the plane of the benzene ring while the meth­oxy substituent is perpendicular to it. An intra­molecular O—H⋯O hydrogen bond generates an S(6) ring motif. The crystal structure is stabilized by intra­molecular O—H⋯O and weak C—H⋯O hydrogen bonds, together with C—H⋯π and π–π inter­actions. Mol­ecules are arranged in an anti­parallel fashion into columns along the [100] direction. [ABSTRACT FROM AUTHOR]

In the title compound, C15H11Cl4NO4, the isoindole unit is planar. The dihedral angle between the isoindole unit and the furan ring is 84.91 (4)°. The mol­ecules are linked via inter­molecular O—H⋯O hydrogen bonds, forming a three-dimensional network. π–π Inter­actions are also observed in the crystal structure. [ABSTRACT FROM AUTHOR]

The title compound, C15H11ClO2, is almost planar and adopts an E configuration. The dihedral angle between the two benzene rings is 10.76 (6)°. An intra­molecular O—H⋯O hydrogen bond generates an S(6) ring motif. Mol­ecules are arranged in layers approximately parallel to the (204) plane and weak π–π inter­actions are observed between the layers. [ABSTRACT FROM AUTHOR]

The title compound, C14H5Cl4NO3, crystallizes with two crystallographically independent mol­ecules in the asymmetric unit. Each independent mol­ecule exists as part of an O/C—H⋯O hydrogen-bonded centrosymmetric dimer. The crystal packing is further stabilized by inter­molecular C—H⋯Cl and π–π inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, C18H15Cl4NO3, the isoindole fragment is slightly twisted and exhibits a propeller-like conformation. The dihedral angle between the isoindoline mean plane and phenyl ring is 59.47 (7)°. Inter­molecular O—H⋯O hydrogen bonds link the mol­ecules into chains running along the b axis. The crystal packing is further stabilized by weak C—H⋯O inter­actions. [ABSTRACT FROM AUTHOR]

Mol­ecules of the title compound, C30H22Br2O2, lie across crystallographic inversion centres. The dihedral angle between the phenyl and bromo­benzene rings is 23.88 (8)°. Weak C—H⋯O inter­actions link the mol­ecules into ribbons along the a axis. [ABSTRACT FROM AUTHOR]

The title compound, C20H30O4, is a diterpenoid which was isolated from the roots of Ceriops tagal (Perr.). The asymmetric unit consists of three crystallographically independent mol­ecules, which are conformationally almost identical. The mol­ecule has three fused rings in the structure; the cyclo­hexene ring A adopts a half chair conformation and the two cyclo­hexane rings B and C are in standard chair conformations. The mol­ecular structure is stabilized by intra- and inter­molecular O—H⋯O hydrogen bonds and weak C—H⋯O inter­actions. In the crystal structure, mol­ecules are linked into infinite one-dimensional chains along the b axis. [ABSTRACT FROM AUTHOR]

In the title compound, C14H17NO, there are two crystallographically independent mol­ecules in the asymmetric unit. The cyclo­hexene rings adopt an envelope conformation. Adjacent mol­ecules are linked via N—H⋯O hydrogen bonds to form dimers and these form one-dimensional chains along the [20 ] direction. These chains are inter­connected by weak inter­molecular C—H⋯O inter­actions. N—H⋯π inter­actions are also observed in the crystal structure. [ABSTRACT FROM AUTHOR]

The medium-sized heterocyclic title compound, C21H17Cl4NO3, crystallizes with two crystallographically independent mol­ecules in the asymmetric unit. The cyclo­pentane rings adopt half-chair conformations. Symmetry-related mol­ecules are linked via O—H⋯O hydrogen bonds to form dimers, which are arranged into one-dimensional chains along the [100] direction. C—H⋯π and π–π inter­actions were also observed in the crystal structure. [ABSTRACT FROM AUTHOR]

In the title compound, C6H13N2+·C7H3N2O6−, the 1-azonia-4-azabicyclo[2.2.2]octane cation acts as a donor in inter­molecular N—H⋯O hydrogen bonds. Beside the electrostatic inter­actions, the crystal structure is also stabilized by C—H⋯O hydrogen bonds to give a three-dimensional mol­ecular network. [ABSTRACT FROM AUTHOR]

The title compound, C18H12O4, known as pinnatin, is a furano­flavone isolated from Derris indica (Lam.). The furano­flavone nucleus is almost planar. The phenyl ring is axially attached to the furano­flavone skeleton. The methoxy group deviates slightly from the plane of the mol­ecule. The mol­ecules are linked in a zigzag manner through C—H⋯O inter­actions into mol­ecular ribbons along the b axis. Further stabilization is provided by weak C—H⋯π and π–π inter­actions. [ABSTRACT FROM AUTHOR]

The title compound, C20H21O7, also known as purpuriol, was isolated for the first time from natural product sources. The cyclo­hexene ring adopts a half-chair conformation with an axially attached methyl benzoate and equatorially attached benzoyl­oxy substituents. The methyl benzoate and benzoyl­oxy groups are essentially planar. The dihedral angle between these groups is 9.2 (2)°. O—H⋯O intermolecular hydrogen bonds link the mol­ecules into chains along the a axis and the chains are interlinked by C—H⋯O hydrogen bonds and C—H⋯π interactions. [ABSTRACT FROM AUTHOR]

The title compound, C18H18O4, was obtained as by-product in a search for nonlinear optical chalcones. In the molecule, the two benzene rings make a dihedral angle of 37.20 (8)°. The crystal packing exhibits weak intermolecular C—H...O interactions. [ABSTRACT FROM AUTHOR]

In the title molecule, C15H9BrClFO, the dihedral angle between the two benzene rings is 22.7 (1)°. The crystal structure is stabilized by intermolecular C—H...F interactions and short Br...Cl contacts [Br...Cl = 3.579 (1) Å]. The compound can potentially exhibit second-order nonlinear optical properties as it crystallizes in a noncentrosymmetric space group. [ABSTRACT FROM AUTHOR]

The title compound, C19H21NO3, is a chalcone derivative which crystallizes with four independent molecules in the asymmetric unit. The dihedral angles between the two benzene rings are in the range 31.73 (14)–38.62 (16)° in the four molecules. In all the molecules, the two methoxy groups deviate slightly from the mean planes of the attached benzene rings. One methyl of the dimethylamino group is coplanar while the other is not coplanar with the attached benzene rings in two of the molecules, whereas in the other two molecules both methyl groups of the dimethylamino group are twisted out of the planes of the attached benzene rings. Weak C—H...O intramolecular interactions involving the enone unit generate S(5) ring motifs. In the crystal structure, the molecules are arranged into chains along the c axis. These chains are stacked along the b axis. The crystal structure is stabilized by weak C—H...O intra- and intermolecular interactions, together with C—H...π interactions. [ABSTRACT FROM AUTHOR]

In the title compound, C17H16N2O3, the dihedral angle between the benzene rings is 1.56 (7)°. The nitro group is coplanar with the attached benzene ring while the dimethylamino group is twisted slightly away from the attached benzene ring. A weak intramolecular C—H...O hydrogen bond is present in the molecular structure. The crystal structure is stabilized by intermolecular C—H...O hydrogen bonds, forming chains along the [011] direction. [ABSTRACT FROM AUTHOR]

In the title compound, C19H20O5, the dihedral angle between the benzene rings is 5.92 (6)°. The molecules are linked by two pairs of C—H...O hydrogen bonds into a centrosymmetric dimer of R21(6) ring motif. In addition, the crystal structure is stabilized by C—H...π interactions. [ABSTRACT FROM AUTHOR]

In the title compound, C15H11BrO, the dihedral angle between the two benzene rings is 49.93 (8)°. The molecules are arranged into infinite chains along the c axis through weak C—H...Br interactions. The chains are stacked along the a axis, forming layers. [ABSTRACT FROM AUTHOR]

The title sesquiterpenoid quinone compound, C15H16O4, was isolated from Thespesia populnea. There are two independent molecules ( A and B) with identical conformations in the asymmetric unit. In both molecules, the dihydropyran rings adopt envelope conformations, with the methylene C as the flap atom, whereas the cyclohenene rings are in screw-boat conformations. Intramolecular O—H...O hydrogen bonds generate S(5) ring motifs in both molecules. The molecules are linked into chains along the a axis through weak C—H...O intermolecular interactions. The crystal structure is stabilized by intramolecular O—H...O hydrogen bonds, and weak C—H...O intra- and intermolecular interactions. C—H...π interactions involving the cyclohexadiene ring are observed in the crystal structure. [ABSTRACT FROM AUTHOR]

The title compound, C20H32O2, a diterpenoid, was isolated from the roots of Bruguiera cylindrica (Rhizophoraceae). There are two crystallographically independent mol­ecules in the asymmetric unit. In both mol­ecules, the cyclo­hexane rings adopt chair conformations and the cyclo­pentane ring has an envelope conformation. In the crystal structure, mol­ecules are linked into a two-dimensional network by inter­molecular O—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, [CuCl2(C20H14N4)], the coordination around the Cu atom is approximately square-planar. The dihedral angle between the pyridine and triazine rings is 5.26 (5)°. The crystal structure is stabilized by C—H⋯Cl inter­actions. [ABSTRACT FROM AUTHOR]

The title compound [systematic name: 2-(2,4-dihydroxy­phen­yl)-5-hydr­oxy-7-meth­oxy-6-(3-methyl-1-buten­yl)-3-(3-methyl-2-buten­yl)-4 H-1-benzopyran-4-one dichoromethane hemisolvate], C26H28O6·0.5CH2Cl2, is a flavonoid isolated from Artocarpus altilis. There are two crystallographically independent mol­ecules in the asymmetric unit along with one dichloro­methane mol­ecule. In the crystal structure, inter­molecular O—H⋯O hydrogen bonds and weak C—H⋯O inter­actions link the mol­ecules into ribbons along the a axis; these ribbons are further linked into a three-dimensional network. Weak C—H⋯π inter­actions are also present in the crystal structure. [ABSTRACT FROM AUTHOR]

In the title mol­ecule, C17H15ClO3, the dihedral angle between the benzene rings is 8.0 (1)°. The crystal structure is stabilized by weak C—H⋯O and C—H⋯π inter­actions which link mol­ecules into a three-dimensional network. [ABSTRACT FROM AUTHOR]

The title compound, C17H16BrNO, adopts an E configuration. The dihedral angle between the two benzene rings is 49.17 (13)°. Intra­molecular C—H⋯O weak inter­actions are present in the crystal structure. The mol­ecules are arranged in double layers parallel to the bc plane. These double layers are stacked in an anti-parallel fashion along the a axis. The crystal structure is stabilized by intra­molecular C—H⋯O weak inter­actions. C—H⋯π inter­action are also observed in the crystal packing. [ABSTRACT FROM AUTHOR]

In the title compound, 2C14H14NO+·I3−·I−, the cations are almost planar and exist in E configurations. The dihedral angles between the pyridinium and benzene rings in the two unique cations are 2.6 (2) and 2.8 (2)°. O—H⋯I hydrogen bonds and weak C—H⋯I inter­actions are observed in the crystal structure. The cations are arranged in a zigzag fashion along the c axis and are packed in an anti­parallel manner into sheets parallel to the bc plane. These sheets are inter­connected via O—H⋯I hydrogen bonds and weak C—H⋯I inter­actions to form a three-dimensional network. [ABSTRACT FROM AUTHOR]

In the title compound, C17H16O3, the dihedral angle between the benzene rings is 10.05 (9)°. Inter­molecular C—H⋯O hydrogen bonds link the mol­ecules to form chains along the b axis. The crystal structure is further stabilized by C—H⋯π inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, C15H10BrClO, the dihedral angle between the benzene rings is 46.70 (5)°. The crystal structure is stabilized by Br⋯Br and Cl⋯Cl contacts and C—H⋯π inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, C15H16NO2+·I−, H2O, the cation is almost planar and exists in an E configuration. The dihedral angle between the pyridinium and benzene rings is 7.05 (5)°. In the crystal structure, water mol­ecules are linked to the cations and anions by O—H⋯O and O—H⋯I hydrogen bonds. These, together with weak C—H⋯O inter­actions, form a three-dimensional network. C—H⋯π inter­actions involving the benzene rings further stabilize the structure. [ABSTRACT FROM AUTHOR]

The title mol­ecule, C7H8N2O3, lies on a mirror plane with two of the methyl H atoms related by mirror symmetry. The crystal structure is stabilized by inter­molecular N—H⋯O and C—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

There are two crystallographically independent ion pairs in the asymmetric unit of the title compound, C15H16NO+·C6H4ClO3S−. Both cations adopt an E configuration with respect to the C=C bond. The dihedral angle between the pyridinium and benzene rings of the two cations are 6.0 (3) and 2.6 (2)°. In the crystal structure, independent cations and anions are individually linked into alternate layers parallel to the ab plane via weak C—H⋯O inter­actions; these layers are inter­connected through weak intra- and inter­molecular C—H⋯O inter­actions, forming a three-dimensional network. C—H⋯π inter­actions involving the benzene and pyridinium rings also help to stabilize the crystal structure. [ABSTRACT FROM AUTHOR]

The title compound, C13H8BrNO3S, crystallizes with two mol­ecules in the asymmetric unit. All bond lengths and angles in both mol­ecules show normal values. In the crystal structure, the mol­ecules are stabilized by inter­molecular C—H⋯O hydrogen bonds and short Br⋯O inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, C14H14NO+·C7H7SO4−, the cation is almost planar and adopts an E configuration. The pyridinium and benzene rings of the cation make dihedral angles of 88.01 (8) and 87.37 (8)°, respectively, with the benzene ring of the anion. In the crystal structure, the cations and anions are arranged in layers parallel to the (011) plane. The cations and anions are linked through O—H⋯O and C—H⋯O hydrogen bonds, and C—H⋯π inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, C7H6ClFN2S, the dihedral angle between the benzene ring and the thio­urea group is 63.62 (3)°. The crystal structure is stabilized by inter­molecular N—H⋯Cl/S hydrogen bonds. [ABSTRACT FROM AUTHOR]

In the title compound, C18H17FO4, the dihedral angle between the benzene rings is 12.42 (2)°. The crystal structure is stabilized by C—H⋯O, C—H⋯π and π–π inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, C15H9BrCl2, the dihedral angle between the two benzene rings is 42.39 (4)°. The crystal structure is stabilized by short inter­molecular Br⋯Br contacts. [ABSTRACT FROM AUTHOR]

The title compound, C14H12OS, crystallizes with the two independent mol­ecules in the asymmetric unit. All bond lengths and angles in both mol­ecules show normal values. No inter­molecular hydrogen bonds or short contacts are found in the crystal structure. [ABSTRACT FROM AUTHOR]

In the title compound, C18H17BrO4, the dihedral angle between the benzene rings is 9.60 (16)°. The crystal structure is stabilized by inter­molecular C—H⋯O inter­actions and Br⋯O short contacts. [ABSTRACT FROM AUTHOR]

In the title mol­ecule, C17H16O3, the dihedral angle between the benzene rings is 25.75 (3)°. The crystal packing is stabilized by C—H⋯π inter­actions. [ABSTRACT FROM AUTHOR]

In the title compound, C8H10N2OS, the dihedral angle between the benzene ring and the thio­urea group is 59.23 (4)°. Mol­ecules are linked via N—H⋯O/S hydrogen bonds, forming a two-dimensional network. [ABSTRACT FROM AUTHOR]

In the title cocrystal, 0.893C19H20O4·0.104C18H17ClO3·0.003C17H14Cl2O, the crystal packing is stabilized by weak inter­molecular C—H⋯O and C—H⋯π inter­actions. [ABSTRACT FROM AUTHOR]

The title compound, C18H18N3OP, was synthesized by the condensation of phosphoryl chloride with an excess of aniline. The P atom is in a distorted tetra­hedral environment. The mol­ecules are stabilized by a weak intra­molecular C—H⋯O hydrogen bond and C—H⋯π inter­actions. The mol­ecules are stacked along the b axis. [ABSTRACT FROM AUTHOR]

In the title compound, C18H17NO6, the dihedral angle between the benzene rings is 43.45 (5)°. There are two intra­molecular hydrogen bonds in the mol­ecule and the structure is stabilized by inter­molecular C—H⋯O hydrogen bonds. [ABSTRACT FROM AUTHOR]

The thio­phene ring of the title compound, C13H8Cl2OS, is disordered. The disorder corresponds to an approximate 180° rotation of the thio­phene ring with respect to the C—C bond linking it to the rest of the mol­ecule. The crystal packing is stabilized by short Cl⋯Cl and S⋯O contacts, together with inter­molecular C—H⋯O and C—H⋯S inter­actions. [ABSTRACT FROM AUTHOR]