Four new coordination polymers involving transition metals with 1,2,4,5-benzenetetracarboxylate and pyridyl-donor ligand di(4-pyridyl) sulfide

摘要: Abstract Four new coordination polymers namely {[Mn2(BT)(DPS)2(H2O)6]·10H2O}n (MnBTDPS), {[Co2(BT)(DPS)2(H2O)6]·10H2O}n (CoBTDPS), {[Cu2(BT)(DPS)(H2O)4]·5H2O}n (CuBTDPS) and {[Zn2(BT)(DPS)2]·6H2O}n (ZnBTDPS), where BT = 1,2,4,5-benzenetetracarboxylate DPS = di(4-pyridyl) sulfide, were synthesized characterized by thermal analysis, vibrational spectroscopy (Raman infrared) single crystal X-ray diffraction analysis. In all compounds, the DPS ligands are coordinated to metal sites in a bridging mode carboxylate moiety of BT adopts monodentate mode, as indicated Raman spectra data through Δν (νasym(COO) − ν sym(COO)) value. According MnBTDPS CoBTDPS isostructural these cases, centers exhibit distorted octahedral geometry. CuBTBPP, Cu2+ geometries best described square-pyramids, according trigonality index τ = 0.14 for Cu1 τ = 0.10 Cu2. On other hand, ZnBTDPS, Zn2+ adopt tetrahedral Finally, four compounds formed two-dimensional sheets that connected each hydrogen bonding giving rise three-dimensional supramolecular arrays.