Bis(thio­semicarbazide)nickel(II) bis­[2-(thio­semicarbazonometh­yl)benzene­sulfonate] dihydrate

In the title compound, [Ni(CH5N3S)2](C8H8N3O3S2)2·2H2O, the NiII atom lies on a inversion centre and is four-coordinated by two N and two S atoms of two thio­semicarbazide ligands in an almost square-planar coordination. In the crystal structure, the molecules are linked into a three-dimensional network via C—H⋯O, C—H⋯N, N—H⋯O, N—H⋯S and O—H⋯O hydrogen bonds

Diaqua­bis(5-methyl­pyridine-2-carboxyl­ato-κ2 N,O)zinc(II)

In the title compound, [Zn(C7H6NO2)2(H2O)2], the Zn atom (site symmetry ) adopts a distorted trans-ZnN2O4 octa­hedral coordination arising from two N,O-bidentate 5-methyl­pyridine-2-carboxyl­ate ligands and two water mol­ecules. In the crystal structure, mol­ecules form a layered network linked by O—H⋯O hydrogen bonds

Aqua­(4-nitro­phthalato)bis­[2-(1H-pyrazol-3-yl)pyridine]­zinc(II) hemihydrate

In the title compound, [Zn(C8H3NO6)(C8H7N3)2(H2O)]·0.5H2O, the ZnII atom shows a distorted octa­hedral ZnN4O2 coordination environment and is bonded to two 3-(2-pyrid­yl)-1H-pyrazole ligands via the N atoms, one monodentate 4-nitro­phthalate ligand and one associated water mol­ecule. Additionally, one water of crystallization, with a site-occupation factor of 0.5, is present. The two 3-(2-pyrid­yl)-1H-pyrazole ligands are planar [r.m.s. deviations = 0.03 (1) and 0.35 (1) Å] and the dihedral angle between the two planar 3-(2-pyrid­yl)-1H-pyrazole ligands is 67.31 (4)°. Inter­molecular π–π stacking inter­actions between 3-(2-pyrid­yl)-1H-pyrazole ligands with a face-to-face separation of 3.64 (1) Å are observed. Moreover, the crystal structure is stabilized by O—H⋯O and N—H⋯O hydrogen bonds between the water of crystallization, the associated water mol­ecule and the 3-(2-pyrid­yl)-1H-pyrazole ligands

A new β-octa­molybdate(VI) salt based on 1,4-bis­(2-methyl-1H-imidazol-1-yl)butane

The title compound, bis­[2,2′-dimethyl-3,3′-(butane-1,4-di­yl)diimidazol-1-ium] β-octa­molybdate(VI), (C12H20N4)2[Mo8O26], was produced by hydro­thermal reaction of an acidified aqueous solution of Na2MoO4 and 1,4-bis­(2-methyl-1H-imidazol-1-yl)butane (hereafter L). The structure of the title compound consists of the β-octa­molybdate anions having a center of symmetry, and protonated [H2 L]2+ cations, which link the β-octa­molybdate anions, generating a supra­molecular chain via hydrogen bonds

Poly[[diaqua-μ2-4,4′-bipyridyl-μ2-o-phthalato-nickel(II)] dihydrate]

In the title layer complex, {[Ni(C8H4O4)(C10H8N2)(H2O)2]·2H2O}n, the Ni atom has a distorted octa­hedral environment, defined by the phthalate and 4,4′-bipyridyl ligands which link the Ni atoms, forming a square lattice in the bc plane. This extends into a three-dimensional supra­molecular network through O—H⋯O hydrogen-bonding inter­actions. The Ni atom lies on, and both ligands are bis­ected by, a crystallographic twofold axis

Bis(μ-biphenyl-2,2′-dicarboxyl­ato)bis­[aqua­(2,2′-bipyridine)cadmium(II)]

In the centrosymmetric dinuclear mol­ecule of the title compound, [Cd2(C14H8O4)2(C10H8N2)2(H2O)2], the Cd2+ ion is coordinated by three O atoms from two different diphenyl­dicarboxyl­ate (dpa) ligands (one O,O′-bidentate and one monodentate), a chelating bipyridine ligand and a water mol­ecule, generating an extremely distorted trigonal-prismatic (or irregular) CdN2O4 coordination geometry for the metal ion. The bridging ligands generate an 18-membered ring, which is stabilized by two pairs of intra­molecular O—H⋯O hydrogen bonds

catena-Poly[[(benzoato-κ2 O,O′)(2,2′-bipyridine-κ2 N,N′)lead(II)]-μ3-nitrato-κ4 O:O,O′:O′′]

In the title coordination polymer, [Pb(C7H5O2)(NO3)(C10H8N2)]n, the PbII ion is eight-coordinated by two N atoms from one 2,2′-bipyridine ligand, two O atoms from one benzoate anion and four O atoms from three nitrate groups (one chelating, two bridging) in a distorted dodecahedral geometry. Adjacent PbII ions are linked by bridging nitrate O atoms through the central Pb2O2 and Pb2O4N2 cores, resulting in an infinite chain structure along the b axis. The crystal structure is stabilized by π–π stacking inter­actions between 2,2′-bipyridine and benzoate ligands belonging to neighboring chains, with shortest centroid–centroid distances of 3.685 (8) and 3.564 (8) Å

catena-Poly[bis(dimethylazanium) [[chloridocopper(II)]-di-μ-chlorido-[chloridocopper(II)]-di-μ-azido-κ4 N:N]]

The crystal structure of the title complex, {(C2H8N)[CuCl2(N3)]}n, exhibits inorganic chains consisting of Cu(II) cations as well azide and chloride anions. The chains, made up from Cu—Cl—Cu—N—Cu linkages, are aligned parallel to the c axis. This architecture is further stabilized by a number of N—H⋯Cl hydrogen bonds involving the protonated charge-compensating dimethyl­amine cations and chloride atoms

Poly[[2-(3-pyridinio)-1H,3H +-benzimidazolium] [μ4-oxido-di-μ3-oxido-tetra-μ2-oxido-hexa­oxidotetra­molybdenum(VI)]]

The reaction of MoO3 with 2-(3-pyrid­yl)benzoimidazole and water in the presence of MnSO4·5H2O at 453 K under hydro­thermal conditions afforded the title compound, {(C12H11N2)[Mo4O13]}n, in which infinite molybdenum oxide anionic chains are charge-balanced by diprotonated 2-(3-pyrid­yl)benzoimidazole (H23-PBIM2+) cations. Eight [MoO6] octa­hedra are edge-shared, forming compact octa­molybdate subunits which are connected through pairs of Mo—O—Mo bridges into extended one-dimensional arrays propagating along the a-axis direction. The asymmetric unit of the metal oxide chain contains one half of the octa­molybdate unit, denoted [Mo4O13], the other half being generated by an inversion center. These molybdenum oxide chains are further connected through the 2-(3-pyridinio)benzoimidazolium cations into a three-dimensional network via N—H⋯O hydrogen bonds. In addition, neighbouring diprotonated cations are arranged in a head-to-tail fashion with a plane-to-plane separation of 3.63 (10) Å, indicating the existence of weak aromatic π–π stacking inter­actions