Reaction of 8-hydroxyquinoline （HQ） with Pb（NO3）2 in water resulted in the formation of a tetranuclear complex [Pb4（HQ）6（NO3）2] 1. It has been characterized by IR, elemental analyses and X-ray diffraction. Crystal data for this complex： triclinic system, space group P1, a = 9.7399（6）, b = 11.6535（8）, c = 12.6806（8） A, α = 62.8050（10）, β = 78.4910（10）, γ = 80.5490（10）°, C54H36N8O12Pb4, Mr= 1817.67, Z = 1, V = 1250.04（14）A^3, Dc = 2.415 g/cm^3,μ = 13.503 mm^-1, -12≤h≤8, -14≤k≤13, -15≤1≤15, F（000） = 840, Rint = 0.0217, R= 0.0348 and wR = 0.0927. X-ray crystal structure analysis revealed that in 1 each Pb（ II ） contains a stereo- chemically active lone pair of electrons. The Pb…C interaction, C-H……O weak interaction and π…π stacking interactions are observed in the complex. In the solid state, the complex possesses strong photoluminescent emission at 485 and 528 nm.
A novel complex [Pb（qina）2（DMSO）]·H2O was synthesized, of which qinais the quinaldic acid radical and DMSO the dimethyl sulfoxide. Elemental analysis, IR spectra, and X-ray single-crystal diffraction were carried out to determine the composition and crystal structure. This complex belongs to monoclinic system, space group P121/n1, with a = 7.1553（17）, b = 17.543（2）, c = 17.306（2） A, β = 91.671（4）°, C22H20N206PbS, Mr = 647.65, Z = 4, V= 2171.5（6） A3, Dc= 1.981 g/cm^3, μ= 7.908 mm^-1, F（000） = 1248, -9≤h≤6, -23≤k≤19, -22≤1≤22, R= 0.0221 and wR= 0.0488. Weak coordinate bond is formed between oxygen atom in DMSO and Pb（ Ⅱ ）. There are also weak interactions, such as π-π interaction, hydrogen bonds and so on, among the complex molecules.
A new ternary complex [Ni（phen）（pmal）]·8H2O （phen = 1,10-phenanthroline, pmal^2- = phenethyl malonic acid） has been synthesized by the reaction of nickel acetate, phen and phenethyl malonic acid. Elemental analysis, IR spectra and X-ray single-crystal diffraction were carried out to determine the composition and crystal structure. Crystal data for this complex： triclinic system, space group PI^-, a = 10.387（5）, b = 13.112（6）, c = 14.229（6） °A, α= 76.176（7）, β = 83.778（8）, γ = 71.770（6）°, C35H42N4O12Ni, Mr= 769.44, Z = 2, F（000） = 808, V = 1786.1°A^3, Dc = 1.431 g/cm^3,μ= 0.612 mm^-1, the final R = 0.0653 and wR = 0.1033 for 9379 （Rint = 0.0244） independent reflections and 4730 observed reflections （I〉 2σ（I））. Structural analysis shows that the coordination geometry of Ni（Ⅱ） is a distorted octahedron. A novel two-dimensional structure is constructed from （H2O）4 and （H2O）12 water clusters, and the complex forms a 3-D network supramolecular structure by hydrogen bonds and π-π stacking of neighboring phens.
A novel two-dimensional supramolecular complex [Mn（phen）（DPZDA）（H2O）]·2H2O has been synthesized by the reaction of Mn（CH3COO）2, 1,10-phenanthroline （phen） and H2DPZDA （3,5-dimethyl-pyrazine-2,6-dicarboxylic acid）. Elemental analysis, IR spectra and X-ray singlecrystal diffraction were carried out to determine the composition and crystal structure of the title complex. Crystal data： triclinic system, space group P1, a = 7.7474（13）, b = 9.3381（15）, c = 15.146（3） A, α = 93.872（3）, β= 102.451 （11 ）, y = 105.261 （ 11）°, C20H20MnN4O7, Mr = 483.34, Z = 2, F（000） = 498, V=1023.2（3）A^3, Dc=1.569 g/cm^3,μ=0.697 mm^-1, -9≤h≤9, -11≤k≤10, -18≤l≤12, R = 0.0365 and wR=0.0901 for 3585 independent reflections （Rint= 0.0165） and 2923 observed reflections （I〉 2σ（I））. Structural analysis indicates that Mn（Ⅱ） adopts a distorted octahedral geometry. The 2-D framework supramolecular structure of the title complex is constructed from hydrogen bonds and π…π interactions.
