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organic compounds
The molecule of the title compound, C21H22N2O2, is nearly planar, except for the C(CH3)2 group on the cyclohexene ring. Molecules are connected via electrostatic C
O contacts, forming zigzag pseudo-chains along the c axis.
O contacts, forming zigzag pseudo-chains along the c axis. organic compounds
The title compound, 4-phenylpyridinium-3-squarate, C15H9NO3, exhibits an interplanar angle between the pyridinium and squarate rings of 0.6 (1)°. It displays a dipolar electronic ground-state structure, with a positively charged pyridinium fragment and a negatively charged squarate moiety. In the molecule, the two aromatic rings are twisted by 31.6 (1)°. The bond lengths within the squarate system represent average values for the two possible resonance structures, with a central typical carbonyl bond [1.203 (2) Å] flanked by two longer `semicarbonyl' bonds of lengths 1.228 (2) and 1.221 (2) Å.
organic compounds
The title compound, 2C9H8NO2+·C4O42−, contains a dianion with approximately D4h symmetry [C—C = 1.465 (4)–1.470 (4) Å and C—O = 1.248 (4)–1.264 (4) Å]. Individual dianions are linked to four neighbouring 8-hydroxyquinolinium cations by OH—N [2.666 (4) and 2.681 (4) Å] and OH—O [2.596 (3) and 2.605 (3) Å] hydrogen bonds to generate a polymeric chain.
H—N [2.666 (4) and 2.681 (4) Å] and OH—O [2.596 (3) and 2.605 (3) Å] hydrogen bonds to generate a polymeric chain. organic compounds
The title compound (systematic name: 6α-acetoxy-4,5α-epoxy-3-methoxy-17-methyl-morphin-7-ene), C20H23NO4, crystallizes with one molecule in the asymmetric unit. The molecular structure exhibits features typical of morphine derivatives with a T configuration. The three-dimensional packing is stabilized by intermolecular C—HN and C—Hπ interactions.
N and C—Hπ interactions.organic compounds
Cations of the title compound, 1-carbamoyl-2-(4-hydroxyphenyl)ethylammonium chloride monohydrate, C9H13N2O2+·Cl−·H2O, are connected by intermolecular N—HO [NO = 2.905 (3) Å] hydrogen bonds between the amide and 4-hydroxy functions into helical chains propagating along the [010] axis. The Cl− ions and water O atom participate in a complex pattern of hydrogen bonds to link these ribbons into a three-dimensional network.
O [NO = 2.905 (3) Å] hydrogen bonds between the amide and 4-hydroxy functions into helical chains propagating along the [010] axis. The Cl− ions and water O atom participate in a complex pattern of hydrogen bonds to link these ribbons into a three-dimensional network.organic compounds
Cations of the title compound, C3H9N2O+·C4HO4−·H2O, are connected by intermolecular Nammonium—HOamide hydrogen bonds into helical chains propagating in the [010] direction. These chains are further linked by Nammonium—HO hydrogen bonds to the hydrogensquarate anions, which in turn form O—HO-bridged chains in the [100] direction, thereby giving rise to a three-dimensional network. The water O atoms participate in two O—HO hydrogen bonds to the anions and one OH—Namide bridge to the cation.
Oamide hydrogen bonds into helical chains propagating in the [010] direction. These chains are further linked by Nammonium—HO hydrogen bonds to the hydrogensquarate anions, which in turn form O—HO-bridged chains in the [100] direction, thereby giving rise to a three-dimensional network. The water O atoms participate in two O—HO hydrogen bonds to the anions and one OH—Namide bridge to the cation.
