Gui-Ying Dong

Hexa-kis-(1-benzyl-1H-imidazole-κN)manganese(II) bis-(perchlorate).

In the title compound, [Mn(C10H10N2)6](ClO4)2, the MnII ion, located on an inversion center, is coordinated by six N atoms from three pairs of symmetry-related 1-benzyl-1H-imidazole ligands in a distorted octahedral geometry. In the crystal, weak intermolecular C—H⋯O hydrogen bonds link the complex cations and perchlorate anions.

Aqua­(1H-benzimidazole-κN3)(pyridine-2,6-dicarboxyl­ato-κ3O2,N,O6)copper(II) 0.75-hydrate

The title complex, [Cu(C7H3NO4)(C7H6N2)(H2O)]·0.75H2O, consists of discrete monomeric units. The CuII atom is coordinated by two carboxylate O atoms and the N atom from a dipicolinate unit and by an N atom from a benzimidazole ligand. The distorted square-pyramidal geometry is completed by a longer axial bond to the O atom of a water molecule. The molecular structure and packing are stabilized by classical O—H⋯O and N—H⋯O hydrogen bonds, also including a disordered crystal water molecule.

Tris(2-ethyl-1H-imidazole-κN)(terephthalato-κO)zinc(II).

The title compound, [Zn(C8H4O4)(C5H8N2)3], has a neutral monomeric structure in which one terephthalate dianion and three 2-ethyl-1H-imidazole ligands coordinate to the ZnII ion in a distorted tetrahedral geometry. The methyl group of one of the ethyl groups is disordered over two positions with occupancies of 0.66 (2) and 0.34 (2). In the crystal structure, molecules are linked into a three-dimensional hydrogen-bonded network by intermolecular N—H⋯O interactions involving the uncoordinated carboxylate O atoms.

[3,3'-Bis(1-naphthylmethyl)-1,1'-(2,2'-oxy-diethyl-ene)bis-(imidazol-2-yl-idene)]mercury(II) bis-(hexa-fluorido-phosphate) acetonitrile solvate.

In the title compound, [Hg(C32H30N4O)](PF6)2·CH3CN, the mercury(II) ion is coordinated by two carbene C atoms [Hg—C = 2.060 (6) and 2.066 (6) Å] and one ether O atom [Hg—O = 2.561 (5) Å] in a distorted T-shaped geometry with a C—Hg—C angle of 166.3 (3)°. One hexafluoridophosphate anion is rotationally disordered between two orientations with an approximate ratio of 2:1. The crystal packing exhibits weak intermolecular C—H⋯F and C—H⋯N interactions.

Synthesis, Crystal Structure, and Characterization of a Novel One-Dimensional Helical Chain Cobalt(II) Coordination Polymer

A novel one-dimensional (1D) helical chain polymer, {[CoL2(H2O)](H3O)(ClO4)}n (1) (HL = 4-N-(2′-pyridylimine)benzoic acid), was synthesized by reaction of Co(II) perchlorate with L anion in ethanol solution, and characterized by element analyses, infrared spectroscopy, and X-ray single-crystal diffraction. In this structure, the Co2+ ion is in a distorted octahedral geometry, an infinite 1D helical chain was constructed by L ligand through bidentate-monodentate bridging modes and are further assembled into three-dimensional supramolecular networks through complicated O–H···O hydrogen bonding interactions.

1,4-Bis(1H-benzimidazol-1-yl)but-2-ene.

In the pseudo-centrosymmetric molecule of the title compound, C18H16N4, two benzimidazole fragments form the dihedral angles of 83.49 (7) and 79.37 (7)°, with the mean plane of the linking butene chain. No classical intermolecular interactions are observed. The porous crystal packing exhibits voids of 85 Å3.

Piperazine-1,4-diium bis-(3,5-dicarboxy-benzoate).

The asymmetric unit of the title salt, C4H12N2 2+·2C9H5O6 −, comprises one half of the piperazine-1,4-diium dication lying on an inversion centre and one 3,5-dicarboxybenzoate anion. In the crystal, the ions are linked into a two-dimensional framework parallel to (101) by N—H⋯O and O—H⋯O hydrogen bonds.

3,3'-(p-Phenyl-enedimethyl-ene)di-1H-imidazol-1-ium bis-(4-nitro-benzoate)-4-nitro-benzoic acid (1/2).

The asymmetric unit of the title compound, C14H16N4 2+·2C7H4NO4 −·2C7H5NO4, comprises one-half of the 3,3′-(p-phenylenedimethylene)di-1H-imidazol-1-ium dication, which lies on an inversion centre, one 4-nitrobenzoate anion and one 4-nitrobenzoic acid molecule. In the crystal, the components are linked into a two-dimensional network parallel to (110) by O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds.

N-Phenyl-N-(prop-2-en-1-yl)benzene-sulfonamide.

In the molecule of the title compound, C15H15NO2S, the dihedral angle between the two phenyl rings is 41.8 (3)°. The S atom has a distorted tetrahedral environment. In the crystal structure, C—H⋯O hydrogen bonds link the molecules into a ribbon-like structure along [010].

Poly[[(1,10-phenanthroline)(μ-l-tartrato)zinc] hexa-hydrate].

The title compouand {[Zn(C4H4O6)(C12H8N2)]·6H2O}n, has a linear chain structure parallel to [100] with Zn(C4H4O6)(C12H8N2) repeat units; the asymmetric unit consists of one Zn2+ cation, one l-tartrate dianion, one 1,10-phenanthroline and six free water molecules. The Zn atom is in a distorted octahedral ZnN2O4 coordination environment. The crystal structure is stabilized by O—H⋯O hydrogen bonds and π–π stacking of the phenanthroline units [centroid–centroid distances in the range 3.552 (2)–3.625 (2)Å] occurs between the chains. The title compound is isotypic with the Cu and Mn analogues.