Syntheses and Crystal Structures of Two Copper(II) Coordination Polymers Derived from Aromatic Carboxylic Acids and Bis(imidazoles) Ligands

Two compounds have been obtained by the reaction of metal (Cu(II)), 4,4'-bis(imidazol-l-yl)diphenyl thioether (BIDPT) with two carboxylic acids, 4,4'-oxydibenzoic acid (H(2)oba) and phthalic acid (H(2)pht). The crystal structures of the resulting compounds, namely {[Cu(BIDPT)(oba)]center dot H2O}(n) (1) and {Cu(BIDPT)(pht)}(n) (2), have been determined by single-crystal X-ray diffraction analysis. Compound 1 is of orthorhombic system, space group Pbcn with a = 27.8310(3), b = 10.7791(1), c = 19.3913(2) angstrom, V = 5817.0(3) angstrom(3) and M-r = 656.15. Compound 2 belongs to the monoclinic system, space group C2/c with a = 18.2678(2), b = 11.0259(1), c = 22.906(2) angstrom, beta = 97.727(2)degrees, V = 4571.8(8) angstrom(3) and M-r = 545.04. Structural analyses reveal that compounds 1 and 2 respectively exhibit two-dimensional (2D) wavy and corrugated layer structures. Through intermolecular hydrogen bonding, compound 1 is assembled into a 3D supramolecular structure. The thermal stability and ultraviolet spectroscopy properties of the two compounds are also investigated.