One new coordination polymer, namely {[Zn(HL)(Hbipy)]2·3H2O}n(bipy = 4,4?-bipyridine, H4 L = 6-(3?,4?-dicarboxyl-phenoxy) isophthalic acid), has been synthesized through a hydrothermal method and characterized by single-crystal X-ray diffraction, elemental analysis, infrared spectra(IR), and thermogravimetric(TG) analysis. The crystal structure is of monoclinic, space group P21/n with a = 9.6435(3), b = 19.8515(7), c = 12.9731(5) ?, β = 103.023(4)o, V = 2419.67(15) ?3, C52H38Zn2N4O21, Mr = 1185.6, Z = 2, Dc = 1.619 g/cm3, F(000) = 1200, μ = 1.083 mm-1, the final R = 0.0443 and w R = 0.1079 for 4269 observed reflections(I > 2σ(I). The compound features a two-dimensional(2D) framework and stabilizes itself by interlayer π···π interactions and innerlayer hydrogen bonds. The 2D layer presents a simple 3-connected 63 topology. Moreover, the thermal dynamic stability and luminescent property of the compound have also been discussed in detail.
Two novel interpenetrating diamond frameworks,namely [Cd(mal)(bix)]n(1) and {[Zn(sub)(bib)]n·H2O}n(2)(H2mal=maleic acid,H2 sub=suberic acid,bix=1,4-bis(imidazol-1-ylmethyl)-benzene,bib=1,4-bis(N-imidazolyl)butane) were hydrothermally synthesized and characterized by elemental analysis,infrared spectra(IR),and single-crystal X-ray diffraction.Single-crystal X-ray diffraction analysis reveals that compound 1 crystallizes in the orthorhombic system with space group Pnma and features a 3-fold interpenetrating diamond framework.Compound 2 exhibits a 4-fold interpenetrating diamond network.The luminescent properties of these two compounds have also been investigated in detail.
A new Cd(Ⅱ) coordination polymer, namely {Cd_2(L)(biimpy)(H_2O)}_n(1, H4 L = 3-(3?,5?-dicarboxylphenoxy)phthalic acid, biimpy = 2,6-bis(1-imdazoly)pyridine), has been successfully synthesized via the hydrothermal reactions of Cd(Ⅱ) ions, H_4L and biimpy. The crystal structure is of triclinic, space group P1 with a = 7.7874(5), b = 9.9716(5), c = 18.5278(6) ?, α = 91.327(4), β = 96.689(4), γ = 111.896(5)o, V = 1322.39(12) ?~3, C_(27)H_(17)Cd_2N_5O_(10), M_r = 796.26, Z = 2,D_c = 2.000 g/cm^3, F(000) = 780, μ = 1.679 mm^(-1), R = 0.0345 and wR = 0.0767 for 3890 observed reflections(I > 2s(I)). Single-crystal X-ray structural analysis reveals that compound 1 features a three-dimensional(3D) framework based on two different dinuclear [Cd_2(COO)_2] building subunits, and topological analysis shows that it can be simplified into a binodal(4,6)-connected topological network with the point symbol of {3.4~2.5~2.6}{3~2.4~2.5~2.6~4.7~4.8}. Moreover, the thermal stability and luminescent property of compound 1 were also studied.
A new zinc(Ⅱ) compound, [Zn(BTA)(UCA)]n(1, HBTA = 1,2,3-benzotriazole, HUCA = 4-imidazoleacrylic acid), has been synthesized via the hydrothermal reactions of Zn(OAC)2·2H2O, HBTA and HUCA. The crystal structure is of monoclinic, space group P21/c with a = 7.450(3), b = 18.911(8), c = 9.198(4) ?, β = 94.317(8)°, V = 1292.2(9) ?3, C12H9N5O2 Zn, Mr = 320.63, Z = 4, Dc = 1.648 g/cm3, F(000) = 648, μ = 1.909 mm-1, R = 0.0255 and w R = 0.0655 for 2104 observed reflections(I > 2σ(I)). Single-crystal X-ray diffraction analysis revealed that compound 1 features a two-dimensional(2D) layered framework based on benzotriazole controlled dinuclear [Zn2(BTA)2] subunits. Furthermore, these 2D layers are threaded into a 3D supramolecular framework via the direction of intermolecular hydrogen bonds and π...π interactions. In addition, the thermal stability and fluorescence property of compound 1 were also investigated.
A new Zn(Ⅱ) coordination polymer, namely [Zn(Htci)(bib)0.5(H2O)]n·nH2O(1, H3 tci = tri(2-carboxyethyl)isocyanurate, bib = 1,4-bis(imidazol-1-ylmethyl)-butane) has been synthesized by combining H3 tci and bib ligands with Zn(Ⅱ) salts under solvothermal conditions. The title compound crystallizes in monoclinic, space group P21/c with a = 13.3424(7), b = 7.9051(5), c = 20.4650(12) , β = 101.935(5)o, V = 2111.8(2) 3, C17H24N5O11 Zn, Mr = 539.8, Z = 4, Dc = 1.698 g/cm3, F(000) = 1116, μ = 1.236 mm-1, the final R = 0.0398 and wR = 0.00879 for 3722 observed reflections(I > 2■(I)). X-ray structural analysis reveals that compound 1 exhibits a three-dimensional(3D) pillar-layered framework, and can be simplified into a 5-connected bnn topological network. Moreover, the luminescent properties for compound 1 were also studied at room temperature.
