journal menu
organic compounds
Open 
access
access
In the cation of the title salt, C23H27N2O4+·C2HO4−·2H2O, both fused pyrrolidine rings exhibit twisted conformations, while the piperidine rings adopt screw-boat and boat conformations. In the crystal, the three components are linked via O—H
O and N—HO interactions, forming a tape along the b axis. The tapes are further linked by weak C—HO hydrogen bonds. forming a three-dimensional network.
O and N—HO interactions, forming a tape along the b axis. The tapes are further linked by weak C—HO hydrogen bonds. forming a three-dimensional network.organic compoundsOpen access
access
The asymmetric unit of the title salt, C3H7N6+·C6H7O4−·C3H4O2·H2O, contains a 2,4,6-triamino-1,3,5-triazin-1-ium cation, a 3-(prop-2-enoyloxy)propanoate anion and acrylic acid and water solvent molecules in a 1:1:1:1 ratio and with each species in a general position. In the crystal, the components are linked into a supramolecular layer in the bc plane via a combination of O—HO, N—HN and N—HO hydrogen bonding. The crystal studied was a non-merohedral twin, the minor component contribution being approximately 26%.
O, N—HN and N—HO hydrogen bonding. The crystal studied was a non-merohedral twin, the minor component contribution being approximately 26%.organic compoundsOpen access
access
The asymmetric unit of the title compound, C3H6N6·2C6H5NO3, contains one melamine and two 3-nitrophenol molecules. The mean planes of the 3-nitrophenol molecules are almost orthogonal to the plane of melamine, making dihedral angles of 82.77 (4) and 88.36 (5)°. In the crystal, molecules are linked via O—HN, N—HN and N—HO hydrogen bonds, forming a three-dimensional network. The crystal also features weak C—Hπ and π–π interactions [centroid–centroid distance = 3.9823 (9) Å].
N, N—HN and N—HO hydrogen bonds, forming a three-dimensional network. The crystal also features weak C—Hπ and π–π interactions [centroid–centroid distance = 3.9823 (9) Å].organic compoundsOpen access
access
The asymmetric unit of the title compound 2C23H27N2O4+·C8H4O42−·9H2O, contains a cation, an anionon a twofold axis and four and half molecules of water, one of which is located on the twofold axis. In the cation, both fused pyrrolidine rings exhibit twisted conformations, while the piperidine rings adopt screw–boat and boat conformations. In the crystal, the components are linked by N—HO and O—HO hydrogen bonds. The brucinium cations form typical undulating head-to-tail ribbon structuresalong the a-axis direction, which associate with the carboxy phthalate and the water molecules.
O and O—HO hydrogen bonds. The brucinium cations form typical undulating head-to-tail ribbon structuresalong the a-axis direction, which associate with the carboxy phthalate and the water molecules.organic compoundsOpen access
access
In the title compound, C33H26N2O4, the pyrazole ring makes dihedral angles of 15.13 (7) and 60.80 (7)° with the adjacent phenyl rings. Both dihydropyran rings exhibit half-chair conformations. A weak intramolecular C—HO interaction occurs. In the crystal, molecules are linked into inversion dimers through pairs of C—HN interactions. Weak C—Hπ interactions are also observed.
O interaction occurs. In the crystal, molecules are linked into inversion dimers through pairs of C—HN interactions. Weak C—Hπ interactions are also observed.organic compoundsOpen access
access
The title compound C28H22O2, basically consists of three ring systems, viz. a central benzene ring, with a lateral napthalene group to which it subtends a dihedral angle of 66.56 (4)° and a tetrahydropyran ring exhibiting a half-chair conformation. The molecular structure is stabilized by a weak intramolecular C—HO interaction, while the crystal packing features weak C—Hπ contacts.
O interaction, while the crystal packing features weak C—Hπ contacts.organic compoundsOpen access
access
In the title compound, C20H19NO2, the dihedral angle between the benzene rings is 77.12 (8)°. The terminal isopropyl group is disordered over two orientations, with site occupancies of 0.720 (14) and 0.280 (14). In the crystal, molecules are linked through a weak C—HO interaction, forming a zigzag chain along the c-axis direction.
O interaction, forming a zigzag chain along the c-axis direction.organic compoundsOpen access
access
The title compound C11H10BrN, has an E conformation at the C=C bond of the acrylonitrile unit. The vinyl group makes a dihedral angle of 44.53 (12)° with the benzene ring. In the crystal, weak C—Hπ interactions involving the benzene ring are observed.
π interactions involving the benzene ring are observed.organic compoundsOpen access
access
In the title compound, C25H21BrN2O2, the fused isoxazolidine ring adopts an envelope conformation with the N atom at the flap and the mean plane of the ring makes dihedral angles of 54.37 (12) and 87.32 (13)°, respectively, with the adjacent phenyl and benzene rings. The tetrahydropyran ring has a half-chair conformation. In the crystal, molecules are linked into a double-column structure along the b-axis direction through weak C—HO and C—Hπ interactions.
O and C—Hπ interactions.organic compoundsOpen access
access
In the title compound, C28H23N3O2, the pyrazole ring makes a dihedral angle of 16.90 (6)° with the phenyl ring to which it is attached. Both dihydropyran rings exhibit half-chair conformations. Intramolecular C—HO interactions generate S(6) and S(8) ring motifs. In the crystal, weak C—HO and C—Hπ interactions occur.
O interactions generate S(6) and S(8) ring motifs. In the crystal, weak C—HO and C—Hπ interactions occur.
