Syntheses, Structures And Photoluminescent Properties Of Coordination Polymers Based On A Chiral Dicarboxylate

A series of chiral coordination polymers, namely, {[Zn3(L)3(H2O)3]·H2O}n(1), [Cu2(L)2]n(2), [Cd3(L)3(H2O)2]n(3), [Zn2(L)2(4,4’-bipy)2]n(4), [Cu2(L)2(4,4’-bipy)2]n(5),{[Zn(L)(biim-4)]·H2O}n(6), [Cu(L)(biim-4)]n(7) and [Zn3(L)3(bth)(H2O)2]n(8-10)(H2L =(S)-(-)-1,1’-binaphtho-2,2’-diacetic acid, 4,4’-bipy = 4,4’-bipyridine, biim-4 =1,1’-(1,4-butanediyl)bis(imidazole) and bth = 1,6-bis(1,2,4-triazol-1-yl)hexane) have been synthesized under hydro/solvothermal conditions. Their structures are characterized by single-crystal X-ray diffraction analyses.In complexes 1-3, L anions bridge Zn(II), Cu(II) and Cd(II) cations to form one dimensional(1D) chains, respectively. The structures of complexes 4 and 5 are isomorphous,in which metal ions are bridged by 4,4’-bipy ligands to furnish 1D columns with L branches.Complex 6 displays a 3D diamond topology. Complex 7 features an undulated sheet with two types of helical chains, and the layers are further extended by π-π interactions to yield 3D supramolecular architectures. Complexes 8-10 possess similar layer structures, but show different stacking modes. Complexes 4, 6 and 8 were characterized by non-linear optical properties. The UV-vis spectra for complexes 1-9 have been researched. The solid state photoluminescent properties for complexes 1, 3, 4, 6, 8 and 9 at ambient and low temperatures were also studied.