A 3-D metal-organic framework constructed with manganese(ΙΙ), 4,4'-oxybis(benzoic acid) and 2,2'-biphenyl: synthesis, crystal structure and photoelectric property characterization.

Assembly of 4,4'-oxybis(benzoic acid) (H(2)L) with manganese chloride in the presence of 2,2'-biphenyl (2,2'-bpy) affords a new coordination polymer [Mn(3)L(3)(2,2'-bpy)(2)](n) (1), in which the [MnL(2)]n layers are extended by L bridges resulting in a three-dimensional (3-D) coordination framework. The network structure of 1 has unusual (2,6)-connectivity and represents a new type of (8(12) · 12(3))(8)(3) topology. These identical and complementary networks are entangled to generate a self-penetrating supramolecular lattice. Moreover, the fluorescence spectrum of 1 exhibits fluorescent emission in the solution of methanol at room temperature. Electrochemical investigation illustrates the electrochemical properties of the title compound. The structure (C(62)H(40)Mn(3)N(4)O(15))(n) is monoclinic with a = 14.2304(18), b = 17.019(2), c = 25.805(3) Å, α = γ = 90, ß = 92.932(2)° and space group C2/c.

Bis{µ-2-[3-carboxyl-atometh-yl-4-(phenyl-sulfan-yl)phen-yl]propano-ato-κ(4)O,O':O'',O'''}bis-[(2,2'-bipyridine-κ(2)N,N')cadmium].

In the title complex, [Cd(2)(C(17)H(14)O(4)S)(2)(C(10)H(8)N(2))(2)], which was hydro-thermally synthesized, the Cd(II) cation is hexa-coordinated in a distorted octa-hedral geometry by two N atoms from a 2,2'-bipyridine ligand and by four O atoms from two different 2-[3-carboxyl-atometh-yl-4-(phenyl-sulfan-yl)phen-yl]propano-ate ligands, forming a cyclic dimetallic complex.

Dichlorido(ethanol-κO)[2-(1,3-thia-zol-4-yl-κN)-1H-benzimidazole-κN(3)]copper(II).

In the title complex, [CuCl(2)(C(10)H(7)N(3)S)(C(2)H(5)OH)], the Cu(II) ion is five-coordinated in a distorted square-pyramidal geometry by two N atoms from a 2-(1,3-thia-zol-4-yl)-1H-benzimidazole ligand, one O atom from an ethanol mol-ecule and two Cl atoms. In the crystal, O-H⋯Cl and N-H⋯Cl hydrogen bonds link the complex mol-ecules into a layer parallel to (100). π-π inter-actions between the thia-zole rings are observed [centroid-centroid distance = 3.749 (3) Å].