Synthesis, crystal structure and surface photo-electric property of a series of Co(II) coordination polymers and supramolecules

摘要: Abstract Four new Co(II) coordination complexes, [Co(o-phta)(pz)2]n 1, [Co(PTA)2(Imh)2]·(HPTA)·H2O 2, {[Co(pdc)2(H2O)]·(ppz)·2H2O}n 3, [K2Co2(ox)(btec)(CH3OH)2]n 4, (H2phta = o-phthalic acid, pz = pyrazole, HPTA = p-toluic ppz = piperazine, Imh = imidazole, H2pdc = pyridine-2,5-dicarboxylic H2(ox) = oxalic H4btec = 1,2,4,5-benzenetetracarboxylic acid), were hydrothermally synthesized and characterized by X-ray single crystal diffraction, IR, UV–Vis absorption spectrum, TG analysis elemental analysis. The surface photovoltage properties of the four complexes investigated spectroscopy (SPS). structural analyses indicate that 1 3 are 1D polymers complex 2 is a mononuclear molecular complex. Complexes connected into 2D supramolecules hydrogen bonds, respectively. Complex 4 polymer with 3D structure, exhibiting 4-nodal(4,5,6,12)-connected topology Schlafli symbol (410)2(424·632·810)(45·6)2(49·65·8). results SPS show exhibit obvious photovoltaic responses in 300–800 nm, which indicates they all possess photo-electric conversion properties. By comparative SPS, it found structure complex, species ligand micro-environment ion affect SPS. relationships between spectra discussed.