Yan-Ju Liu

Dichloridobis[2-(2-fur­yl)-1-(2-furylmeth­yl)-1H-benzimidazole-κN3]cadmium(II)

In the title complex, [CdCl2(C16H12N2O2)2], the CdII ion exhibits site symmetry 2. It shows a distorted tetrahedral coordination defined by two N atoms from symmetry-related 2-(2-furyl)-1-(2-furylmethyl)-1H-benzimidazole ligands and by two symmetry-related Cl atoms. Intramolecular C—H⋯O hydrogen bonds stabilize the molecular configuration. Adjacent molecules are linked through C—H⋯Cl hydrogen bonds into a network structure.

μ-Oxido-bis-[bis-(phenanthroline-κN,N')(sulfato-κO)iron(III)] octa-hydrate.

The title complex, [Fe2O(SO4)2(C12H8N2)4]·8H2O, contains two unique FeIII cations, one oxide anion, four 1,10-phenanthroline (phen) ligands, two coordinated sulfate anions and eight lattice water molecules. Each FeIII ion has an approximate octahedral geometry, coordinated by four N atoms from two phen molecules, two O atoms from oxide and sulfate anions, respectively. The parallel phen molecules form two-dimensional supermolecules through π–π stacking interactions [centroid–centroid distances = 3.684 (3), 3.711 (3), 3.790 (3), 3.847 (3), 3.746 (3), 3.732 (3) and 3.729 (3) Å]. This architecture is further stabilized by O—H⋯O hydrogen bonds involving the lattice water molecules and sulfate O atoms.

The azide-bridged mixed-valent cobalt(II,III) compound [(CH3)3NH]2[CoIICo2III(N3)10]

The crystal structure of the title compound, poly[bis(trimethylammonium) hexa-μ1,1-azido-tetraazidotricobaltate(II,III)], [(CH3)3NH]2[CoIICoIII 2(N3)10], consists of anionic chains [CoIICoIII 2(N3)10]2− extending parallel to the c axis and [(CH3)3NH]+ counter-cations situated between the chains. In the anionic chain, one tetrahedrally coordinated CoII atom (site symmetry 2) and two octahedrally coordinated CoIII atoms are arranged alternately and are linked by μ1,1-azide bridges. The anionic chains and cations are connected via N—H⋯N hydrogen bonding into a three-dimensional structure.

Poly[[tetra-kis-(μ-2-anilinobenzoato-κO:O')tetra-μ(1,1,1)-azido-tetra-μ(1,1)-azido-octa-methano-lhexa-nickel(II)] methanol hexa-solvate].

The crystal structure of the title compound, [Ni6(C13H10NO2)4(N3)8(CH3OH)8]·6CH3OH, consists of a centrosymmetric hexanuclear [NiII 6(C13H10NO2)4(N3)8(CH3OH)8] molecule and six methanol solvent molecules. In the hexanuclear unit, the six octahedrally coordinated NiII atoms are linked by four μ1,1,1-azide and four μ1,1-azide bridges, forming a face-sharing Ni6N8 tetracubane-like unit with four missing corners. The NiII atoms are further bridged by four μ1,2-carboxalate groups. Neighbouring hexanuclear units are connected via N—H⋯O hydrogen-bonding interactions into a three-dimensional structure. Although the H atoms of the methanol OH groups could not be located, O⋯N/O contacts between 2.65 and 2.86 Å suggest that these molecules participate in hydrogen bonding.

Bis[2-(2-fur-yl)-1-(2-furylmeth-yl)-1H-benzimidazole-κN]diiodidocadmium.

In the title complex, [CdI2(C16H12N2O2)2], the CdII atom is located on a twofold rotation axis and is four-coordinated by two N atoms from symmetry-related 2-(2-furyl)-1-(2-furylmethyl)-1H-benzimidazole ligands and two I atoms in a distorted tetrahedral configuration. The benzimidazole rings in adjacent molecules are parallel, with an average interplanar distance of 3.486 Å. The I atom is disordered over two sites in a 0.85 (5):0.15 (5) ratio.

4-Chloro-N-methyl­benzamide

There are two molecules in the asymmetric unit of the title compound, C8H8ClNO, which are linked in the crystal structure via N—H⋯O hydrogen bonds into chains along the b axis. C—H⋯O contacts also occur. The benzene ring makes dihedral angles of 5.9 (1) and 16.7 (1)°with the attached amide group in the two independent molecules.

5-Meth-oxy-1,3,4-thia-diazol-2(3H)-one.

The three molecules in the asymmetric unit of the title compound, C3H4N2O2S, are connected via N—H⋯O hydrogen bonds, forming layers normal to [001]. The rings of the molecules are approximately planar, with r.m.s. deviations of 0.0051 (1), 0.0044 (1) and 0.0111 (1) Å.

5-Bromo-4-iodo-2-methyl-aniline.

The asymmetric unit of the title compound, C7H7BrIN, contains two independent molecules, which are linked by weak N—H⋯N hydroden-bonding interactions between the amino groups.

4-Meth­oxy-N-methyl­benzamide

In the title compound, C9H11NO2, the dihedral angle between the amide group and the benzene ring is 10.6 (1)°. In the crystal, molecules are connected via N—H⋯O hydrogen bonds, supported by a C—H⋯O contact, forming chains along b. These chains are linked by C—H⋯π interactions to give a three-dimensional network.

3-[2-Chloro-4-(trifluoro­meth­yl)phen­oxy]benzoic acid

The asymmetric unit of the title compound, C14H8ClF3O3, comprises two independent molecules. The rings in each molecule are connected together via O—H⋯O hydrogen bonds to form classical hydrogen-bonded carboxylic acid dimers. The dihedral angles between the benzene rings are 80.7 (1) and 68.7 (1)°.