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In the title compound, [U(C17H13N2O2)2O2(CH3OH)]·CH3OH, the UVI ion is coordinated by seven O atoms in a distorted pentagonal–bipyramidal geometry with two 3-methyl-1-phenyl-4-benzoyl-4,5-dihydro-1H-pyrazol-5-olate groups with two O atoms in a bidentate chelating coordination mode and by three O atoms, one of which is from a methanol ligand. The crystal packing can be described by alternating layers of complex molecules along the a axis. The structure is stabilized by O—H
N and O—HO hydrogen bonding and van der Waals interactions.
N and O—HO hydrogen bonding and van der Waals interactions.metal-organic compoundsOpen access
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In the title compound, [Co(C16H16NO2)3], the CoIII atom is six-coordinated in an irregular octahedral geometry by three N,O-chelating 2-{[2-(4-methoxyphenyl)ethyl]iminomethyl}phenolate groups. One of the three methoxy group is disordered over two sets of sites with an occupancy ratio of 0.768 (5):0.232 (5). The crystal packing can be described by alternating zigzag layers of organic ligands and CoN3O3 octahedra along the c axis. There are no classical hydrogen bonds in the structure, but C—Hπ interactions occur.
π interactions occur.metal-organic compoundsOpen access
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In the title compound, [Cu(ClO4)2(C2H8N2)(C5H5N)2], the CuII cation is located on a twofold rotation axis and is coordinated by four N and two O atoms in a tetragonally distorted octahedral geometry. The crystal packing can be described as ClO4 tetrahedra and CuN4O2 octahedra alternating in a zigzag fashion along the c axis. The structure is stabilized by intermolecular N—HO and C—HO hydrogen bonds, as well as π–π interactions [centroid–centroid distance = 3.7179 (15) Å].
O and C—HO hydrogen bonds, as well as π–π interactions [centroid–centroid distance = 3.7179 (15) Å].metal-organic compoundsOpen access
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Molecules of the title compound, [Cu(C21H17N3O4)(H2O)], lie across a crystallographic mirror plane. The CuII atom is five-coordinated in a distorted square-pyramidal environment by two phenolate O atoms and two imine N atoms of the tetradentate Schiff base anion in the basal plane and one water molecule in the apical position. Because of symmetry, the pyridine N atom and the corresponding C atom at the 4-position of the pyridine ring are disordered. The crystal packing can be described as being composed of alternating layers stacked along [001]. Intramolecular C—HN and intermolecular C—HO and O—HO hydrogen-bonding interactions, as well as C—Hπ and π–π stacking interactions [shortest centroid–centroid distance = 3.799 (8) Å and interplanar distance = 3.469 (2) Å] are observed.
N and intermolecular C—HO and O—HO hydrogen-bonding interactions, as well as C—Hπ and π–π stacking interactions [shortest centroid–centroid distance = 3.799 (8) Å and interplanar distance = 3.469 (2) Å] are observed.organic compoundsOpen access
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In the title compound, C15H17NO3, the mean planes of the pyrrole and benzene rings form a dihedral angle of 81.92 (7)°. The molecule contains an intramolecular O—HO hydrogen bond. In the crystal, weak C—Hπ interactions link the molecules into chains along [010].
O hydrogen bond. In the crystal, weak C—Hπ interactions link the molecules into chains along [010].organic compoundsOpen access
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The two-dimensional crystal packing of the title compound, C3H5N4O2+·NO2−·H2O, results from the stacking of well separated layers (i.e. with nothing between the layers) parallel to the (-113) plane in which adjacent cations adopt a head-to-head arrangement such that two –COOH groups are linked via two water molecules (the water O atom behaves simultaneously as donor and acceptor of hydrogen bonds) and two –NH2 groups are linked through two nitrate anions. This arrangement leads to alternating hydrophilic and hydrophobic zones in which O—HO and N—HO hydrogen bonds, respectively, are observed.
O and N—HO hydrogen bonds, respectively, are observed.organic compoundsOpen access
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In the title compound, 2C3H5N4O2+·H2PO4-·NO3-·C3H4N4O2, three independent 5-amino-1H-1,2,4-triazol-3-carboxylic acid moieties are observed. Two are in the form of cations, while the third is in the zwitterionic form. The triazole rings in the two cations are almost coplanar, making an angle of 4.11 (7)°. Layers parallel to the (20-1) plane, resulting from hydrogen bonding of the organic molecules and the nitrate anions, are linked via H2PO4- infinite zigzag chains running parallel to the c axis. The crystal studied was an inversion twin, with refined components of 0.33 (7) and 0.67 (7).
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In the centrosymmetric binuclear cation of the title compound, [Cu(C8H7O4)(H2O)(C5H5N)2]2(ClO4)2, the CuII atoms are bridged by a pair of two dehydroacetate anions in a bis-/monodentate mode. The distorted octahedral N2O4 coordination sphere of the metal cation is completed by two pyridine N atoms and one O atom of a water molecule. The complex cations and the perchlorate counter anions are arranged in layers parallel to (100). O—HO hydrogen bonds between the coordinating water molecules and the perchlorate anions constitute ribbons parallel to [10-1]. C—HO hydrogen bonds are also observed.
O hydrogen bonds between the coordinating water molecules and the perchlorate anions constitute ribbons parallel to [10-1]. C—HO hydrogen bonds are also observed.organic compoundsOpen access
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In the title salt, C5H7Br2N2+·Br−, the cation and anion are connected by an N—HBr hydrogen bond. In the crystal, there are intercalated layers parallel to (10-2) in which bromide ions are located between the cations. Weak intermolecular C—HBr hydrogen bonds are also observed.
Br hydrogen bond. In the crystal, there are intercalated layers parallel to (10-2) in which bromide ions are located between the cations. Weak intermolecular C—HBr hydrogen bonds are also observed.organic compoundsOpen access
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The asymmetric unit of the title compound, C6H7N2O2+·Cl−·0.5H2O, consists of two protonated 2-amino-3-carboxypyridine cations, two chloride anions and one molecule of water. The crystal packing can be described as alternating layers of cations and anions parallel to (110), which are linked together by Ow—HCl interactions. In the crystal, four types of classical hydrogen bonds are observed, viz. cation–anion (O—HCl and N—HCl), cation–cation (N—HO), cation–water (N—HOw) and water–anion (Ow—HCl), resulting in the formation of an infinite three-dimensional network.
Cl interactions. In the crystal, four types of classical hydrogen bonds are observed, viz. cation–anion (O—HCl and N—HCl), cation–cation (N—HO), cation–water (N—HOw) and water–anion (Ow—HCl), resulting in the formation of an infinite three-dimensional network.organic compoundsOpen access
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In the title compound, C11H10ClN3O, the quinoline ring system is essentially planar, the r.m.s. deviation for the non-H atoms being 0.014 (2) Å with a maximum deviation from the mean plane of 0.0206 (14) Å for the C atom bonded to the –CH—N=NH2 group. In the crystal, molecules are linked via N—HO and N—HN hydrogen bonds, forming zigzag layers parallel to (010).
O and N—HN hydrogen bonds, forming zigzag layers parallel to (010).organic compoundsOpen access
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Molecules of the title compound, C34H38N4O2, lie across crystallographic inversion centres. The crystal packing can be described by alternating zigzag chains along the c axis in which the molecules are linked by van der Waals interactions. There is an intramolecular O—HN hydrogen bond and the two benzene rings in the asymmetric unit make a dihedral angle of 79.81 (6)°.
N hydrogen bond and the two benzene rings in the asymmetric unit make a dihedral angle of 79.81 (6)°.organic compoundsOpen access
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The asymmetric unit includes two crystallographically independent equivalents of the title salt, C6H7N2O2+·ClO4−. The cations and anions form separate layers alternating along the c axis, which are linked by N—HO, O—HO and C—HO hydrogen bonds into a two-dimensional network parallel to (100). Further C—HO contacts connect these layers, forming a three-dimensional network, in which R44(20) rings and C22(11) infinite chains can be identified.
O, O—HO and C—HO hydrogen bonds into a two-dimensional network parallel to (100). Further C—HO contacts connect these layers, forming a three-dimensional network, in which R44(20) rings and C22(11) infinite chains can be identified.organic compoundsOpen access
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The title molecule, C16H12Cl4N2O2, lies about an inversion center. The symmetry-unique part of the molecule contains an intramolecular O—HN hydrogen bond. In the crystal, molecules are arranged in corrugated layers parallel to (-101). Weak π–π stacking interactions, with a centroid–centroid diatance of 3.7923 (13) Å, are present.
N hydrogen bond. In the crystal, molecules are arranged in corrugated layers parallel to (-101). Weak π–π stacking interactions, with a centroid–centroid diatance of 3.7923 (13) Å, are present.organic compoundsOpen access
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In the title compound, C19H15ClN2O, the quinoline ring forms a dihedral angle of 43.24 (1)° with the benzene ring of the dihydroquinolinyl system. In the crystal, molecules are linked through a single weak C—HO hydrogen bond, forming ribbons which extend along (100), giving alternating zigzag molecular layers which stack down the b-axis direction.
O hydrogen bond, forming ribbons which extend along (100), giving alternating zigzag molecular layers which stack down the b-axis direction.organic compoundsOpen access
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The asymmetric unit of the title compound, C5H6N3O2+·ClO4−·2C5H5N3O2·H2O, comprises two symmetry-independent zwitterions, one cation, one perchlorate anion and one water molecule. In the crystal, the three different types of organic entities are linked by N—HO and N—HN hydrogen bonds, forming undulating sheets parallel to (1-10). These sheets are in turn connected by O—HN and O—HO hydrogen bonds involving perchlorate anions and water molecules, forming a three-dimensional network. Intramolecular N—HO and weak intermolecular C—HO hydrogen bonds are also present.
O and N—HN hydrogen bonds, forming undulating sheets parallel to (1-10). These sheets are in turn connected by O—HN and O—HO hydrogen bonds involving perchlorate anions and water molecules, forming a three-dimensional network. Intramolecular N—HO and weak intermolecular C—HO hydrogen bonds are also present.organic compoundsOpen access
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The asymmetric unit of the title compound, C18H20N2O4, contains one-half molecule with an inversion center located at the centroid of the molecule. In the crystal, molecules are linked by C—Hπ interactions, forming layers parallel to (101). An intramolecular O—HN hydrogen bond also occurs.
π interactions, forming layers parallel to (101). An intramolecular O—HN hydrogen bond also occurs.organic compoundsOpen access
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The asymmetric unit of the title fluorosilicate salt, 2C9H12NO2+·SiF62-, consists of a phenylalaninium cation and half of a fluorosilicate anion, the Si atom being located on an inversion center. In the crystal, all of the F atoms act as hydrogen-bond acceptors and link the cations through different graph-set motifs, forming layers developing parallel to (100).
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In the title molecule, C18H15N3O2, the dihedral angle between the quinoline and benzimidazole ring systems is 23.57 (5)°. The C atoms of the methoxy groups are both close to being coplanar with their attached ring systems [deviations = 0.193 (2) and −0.020 (2) Å]. An intramolecular N—HO hydrogen bond closes an S(6) ring. In the crystal, N—HN hydrogen bonds link the molecules into C(4) chains propagating in [010]. Weak C—Hπ interactions also occur.
O hydrogen bond closes an S(6) ring. In the crystal, N—HN hydrogen bonds link the molecules into C(4) chains propagating in [010]. Weak C—Hπ interactions also occur.organic compoundsOpen access
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In the title compound, C7H6ClNO3S, the nitro group forms a dihedral angle of 2.7 (4)° with the benzene ring. The bond-angle sum at the S atom is 303.7°. In the crystal, molecules are linked by weak C—HO hydrogen bonds, forming layers lying parallel to (-101).
O hydrogen bonds, forming layers lying parallel to (-101).
