Koji Kubono

The asymmetric unit of the title compound is composed of one host molecule, anti-4-(1⁹ H,5⁹ H-3-aza-1,5(3,9)-dicarbazolacyclooctaphane-3-yl)benzonitrile and one dichloromethane solvate molecule, C₃₆H₂₈N₄·CH₂Cl₂. The host molecule possesses a planar chirality but crystallizes as a racemate in the space group P2₁/c. It adopts an anti-configuration, in which two carbazole rings are partially overlapped with a parallel orientation. The two carbazole ring systems are slightly bent, and the C atoms at the 3- and 1-positions show the largest deviations from the mean planes. The dihedral angle between two carbazole rings is 9.42 (3)°, forming an intramolecular parallel π–π interaction [Cg...Cg = 3.2755 (9) Å]. In the crystal, the molecules are linked via host–host and host–guest C—H...π interactions, forming chain structures along the a-axis direction. The molecules are linked into a ribbon structure along the c-axis direction by further C—H...π interactions. As a result, The molecules are cross-linked by C—H...π interactions into a three-dimensional network.

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 Zn^II 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 Zn^II 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 R ₂ ²(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.

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.

In the title compound, [Na(C₂₂H₁₉N₄O₄S)(CH₃CN)]_n, the Na^I atom adopts a distorted square-pyramidal coordination geometry, formed by one N and one O atom of the qunolinol moiety in the ligand, two O atoms of sulfonate moieties of two adjacent ligands and the N atom of the coordinated acetonitrile solvent. The Na^I atom is located well above the mean basal plane of the square-based pyramid. The apical position is occupied by a sulfonate O atom of a neighboring ligand. Three N atoms of the bis(pyridin-2-ylmethyl)amine moiety in the ligand are not coordinated by the sodium atom. The molecule forms an intramolecular bifurcated O—H...[N(tertiary amine),N(pyridine)] hydrogen bond, generating S(6) and S(5) rings. In the crystal, four molecules are linked by four Na—O(sulfonato) bridged coordination bonds, forming a supramolecular centrosymmetric tetramer unit comprising an eight-membered ring, and generating a two-dimensional network sheet. The molecules of different sheets form intermolecular C—H...O hydrogen bonds, and thereby a three-dimensional network structure.

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 P-1. 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) Å]. 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.

The molecule of the title compound, C₁₆H₁₄N₂O, contains an essentially planar indole ring system and a phenyl ring. In the crystal, the molecules are linked by a weak intermolecular C—H...O hydrogen bond and C—H...π interactions, forming a one-dimensional column structure along the b-axis direction. These columns are linked by other C—H...π interactions, forming a two-dimensional network structure.

In the title compound, [ZnBr₂(C₂₂H₁₉ClN₄O)], the Zn^II 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 Zn^II 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 Zn^II 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 R ₂ ²(22) and R ₂ ²(14) rings. These ribbons are linked through an intermolecular C—H...Br hydrogen bond, forming a two-dimensional network sheet.

In the title compound, C₂₇H₂₉BrN₂, the carbazole ring system is essentially planar, with an r.m.s. deviation of 0.0781 (16) Å. An intramolecular N—H...N hydrogen bond forms an S(6) ring motif. One of the tert-butyl substituents shows rotational disorder over two sites with occupancies of 0.592 (3) and 0.408 (3). In the crystal, two molecules are associated into an inversion dimer through a pair of C—H...π interactions. The dimers are further linked by another pair of C—H...π interactions, forming a ribbon along the c-axis direction. A C—H...π interaction involving the minor disordered component and the carbazole ring system links the ribbons, generating a network sheet parallel to (100).

Journal of Ion Exchange 14巻の別冊に掲載

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