Keita Tani

The title compound, [Zn ₂ (C ₂₂ H ₁₈ ClN ₄ O) ₂ ](ClO ₄ ) ₂ ·CH ₃ CN, consists of one centrosymmetric cationic dinuclear zinc(II) complex with two pentadentate ligands containing quinolin-8-olato and bis(pyridin-2-ylmethyl)amine groups, two perchlorate counter-ions and one acetonitrile solvate molecule. The Zn ^II atom adopts a distorted octahedral geometry and coordinates the O atom and the N atom of the quinolin-8-olato group and three N atoms of the bis(pyridin-2-ylmethyl)amine group in a ligand, and the O atom in an adjacent ligand generated by an inversion operation. The phenolato oxygen atoms in the two ligands of the cationic dinuclear complex are bridging coordinated with the two Zn ^II atoms. In the crystal, the cationic dinuclear complex molecules and perchlorate ions are linked by C—H...Cl and C—H...O hydrogen bonds, forming a three-dimensional network.

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.

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.