A Novel Luminescent Zinc(Ⅱ) Coordination Polymer with 2D → 3D Polythreaded Motif

【摘要】 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.更多还原

【Abstract】 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.更多还原