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In the title compound, C15H18N2O3, the coumarin ring is essentially planar, with an r.m.s. deviation of 0.012 Å. An intramolecular O—H...N hydrogen bond forms an S(6) ring motif. The piperazine ring adopts a chair conformation. In the crystal, a C—H...O hydrogen bond generates a C(4) chain motif running along the c axis. The chain structure is stabilized by a C—H...π interaction. The chains are linked by π–π interactions [centroid–centroid distance of 3.5745 (11) Å], forming a sheet structure parallel to the bc plane.

In the title compound, C22H19ClN4O, the quinolinol moiety is almost planar [r.m.s. deviation = 0.012 Å]. There is an intramolecular O—H...N hydrogen bond involving the hydroxy group and a pyridine N atom forming an S(9) ring motif. The dihedral angles between the planes of the quinolinol moiety and the pyridine rings are 44.15 (9) and 36.85 (9)°. In the crystal, molecules are linked via C—H...O hydrogen bonds forming inversion dimers with an R44(10) ring motif. The dimers are linked by C—H...N hydrogen bonds, forming ribbons along [01-1]. The ribbons are linked by C—H...π and π–π interactions [inter-centroid distance = 3.7109 (11) Å], forming layers parallel to (01-1).

The title compound, [Zn2(C22H18ClN4O)Cl3], is a dinuclear zinc(II) complex with three chlorido ligands and one pentadentate ligand containing quinolin-8- olato and bis(pyridin-2-ylmethyl)amine groups. One of the two ZnII atom adopts a tetrahedral geometry and coordinates two chlorido ligands with chelate coordination of the N and O atoms of the quinolin-8-olato group in the ligand. The other ZnII atom adopts a distorted trigonal–bipyramidal geometry, and coordinates one chlorido-O atom of the quinolin-8-olato group and three N atoms of the bis(pyridin-2-ylmethyl)amine unit. In the crystal, two molecules are associated through a pair of intermolecular C—H···Cl hydrogen bonds, forming a dimer with an R2² (12) ring motif. Another intermolecular C—H···Cl hydrogen bond forms a spiral C(8) chain running parallel to the [010] direction. The dimers are linked by these two intermolecular C—H···Cl hydrogen bonds, generating a ribbon sheet structure in ac plane. Two other intermolecular C—H···Cl hydrogen bonds form a C(7) chain along the c-axis direction and another C(7) chain generated by a d-glide plane. The molecules are cross-linked through the four intermolecular C—H···Cl hydrogen bonds to form a three dimensional network. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound is composed of two independent ion pairs of 4-(di­methyl­amino)­pyridin-1-ium 8-hy­droxy­quinoline-5-sulfonate (HDMAP+·HqSA−, C7H11N2+·C9H6NO4S−) and neutral N,N-di­methyl­pyridin-4-amine mol­ecules (DMAP, C7H10N2), co-crystallized as a 1:1:1 HDMAP+:HqSA−:DMAP adduct in the monoclinic system, space group Pc. The compound has a layered structure, including cation layers of HDMAP+ with DMAP and anion layers of HqSA− in the crystal. In the cation layer, there are inter­molecular N—H⋯N hydrogen bonds between the protonated HDMAP+ mol­ecule and the neutral DMAP mol­ecule. In the anion layer, each HqSA− is surrounded by other six HqSA−, where the planar network structure is formed by inter­molecular O—H⋯O and C—H⋯O hydrogen bonds. The cation and anion layers are linked by intermolecular C—H⋯O hydrogen bonds and C—H⋯π inter­actions. [ABSTRACT FROM AUTHOR]

The asymmetric unit of the title compound is composed of two independent ion pairs of 4-(di­methyl­amino)­pyridin-1-ium 8-hy­droxy­quinoline-5-sulfonate (HDMAP+·HqSA-, C7H11N2+·C9H6NO4S-) and neutral N,N-di­methyl­pyridin-4-amine mol­ecules (DMAP, C7H10N2), co-crystallized as a 1:1:1 HDMAP+:HqSA-:DMAP adduct in the monoclinic system, space group Pc. The compound has a layered structure, including cation layers of HDMAP+ with DMAP and anion layers of HqSA- in the crystal. In the cation layer, there are inter­molecular N--H⋯N hydrogen bonds between the protonated HDMAP+ mol­ecule and the neutral DMAP mol­ecule. In the anion layer, each HqSA- is surrounded by other six HqSA-, where the planar network structure is formed by inter­molecular O--H...O and C--H...O hydrogen bonds. The cation and anion layers are linked by inter­molecular C--H...O hydrogen bonds and C--H...π inter­actions. [ABSTRACT FROM AUTHOR]

The title copper(II) complex, [Cu(C18H19N3O3)(C3H4N2)], consists of a tridentate ligand synthesized from l-leucine and azobenzene-salicylaldehyde. One imidazole molecule is additionally coordinated to the copper(II) ion in the equatorial plane. The crystal structure features N--H...O hydrogen bonds. A Hirshfeld surface analysis indicates that the most important contributions to the packing are from H...H (52.0%) and C...H/H...C (17.9%) contacts. [ABSTRACT FROM AUTHOR]

The title compound, C33H33N3, is a carbazolophane, which is a cyclophane composed of two carbazole fragments. It has a planar chirality but crystallizes as a racemate in the space group PÏ. The molecule adopts an anti-configuration, in which two carbazole fragments are partially overlapped. Both carbazole ring systems are slightly bent, with the C atoms at 3-positions showing the largest deviations from the mean planes. The dihedral angle between two carbazole fragments is 5.19 (3)°, allowing an intramolecular slipped π-π interaction [Cg⋯Cg = 3.2514 (8) A]. In the crystal, the molecules are linked via intermolecular C--H⋯N hydrogen bonds and C--H⋯π interactions into a network sheet parallel to the ab plane. The molecules of different sheets form other C--H⋯π interactions, thus forming a three-dimensional network. [ABSTRACT FROM AUTHOR]

In the title compound, [ZnBr2(C22H19ClN4O)], the ZnII atom adopts a distorted square-pyramidal coordination geometry, formed by two bromido ligands and three N atoms of the bis(pyridin-2-ylmethyl)amine moiety in the pentadentate ligand containing quinolinol. The ZnII atom is located well above the mean basal plane of the square-based pyramid. The apical position is occupied by a Br atom. The O and N atoms of the quinolinol moiety in the ligand are not coordinated to the ZnII atom. An intramolecular O--H···N hydrogen bond, generating an S(5) ring motif, stabilizes the molecular structure. In the crystal, the molecules are linked by intermolecular C--H···Br hydrogen bonds, generating ribbon structures containing alternating R22(22) and R22(14) rings. These ribbons are linked through an intermolecular C--H···Br hydrogen bond, forming a two-dimensional network sheet. [ABSTRACT FROM AUTHOR]

The title crystalline compound, [Cu2(NCS)2(C9H16N2)2], was obtained from the reaction of copper(I) thio­cyanate (CuSCN) with (N-prop-2-en-1-yl)piperidine-1-carbo­thio­amide as a chelating and bridging thio­urea ligand in chloro­benzene. The Cu2S2 core of the dimeric mol­ecule is situated on a crystallographic inversion centre. The copper atom is coordinated by a thio­cyanate nitro­gen atom, each sulfur atom of the two thio­urea ligands, and the C=C double bond of the ligand in a distorted tetra­hedral geometry. The dimers are linked by N—H...S hydrogen bonds, forming a network extending in two dimensions parallel to (100). [ABSTRACT FROM AUTHOR]

In the title compound, C24H15Cl2N3O2, one quinoline ring system is essentially planar and the other is slightly bent. An intramolecular O—HN hydrogen bond involving the hydroxy group and a pyridine N atom forms an S(5) ring motif. In the crystal, two molecules are associated into an inversion dimer with two R2 ² (7) ring motifs through intermolecular O—H. . . N and O—H. . .O hydrogen bonds. The dimers are further linked by an intermolecular C—H. . .O hydrogen bond and four C—H . . .&#960:interactions, forming a two-dimensional network parallel to (001). [ABSTRACT FROM AUTHOR]