Syntheses, Structures And Properties Of New Organic-Inorganic Coordination Polymers Generated From Oxadiazole-Bridging And Triazole-Bridging Ligands

The chemistry of organic-inorganic coordination polymers has recently become area of increasing interest. Self-assembly of organic ligands and inorganic metal ions is one of the most efficient and widely used approaches for the construction of organic-inorganic composite materials. In this thesis, we wish to report the syntheses, structures and properties of 21 new organic-inorganic coordination polymers generated from bent 1, 3, 4-oxadiazole-bridging ligands , 1, 2, 4-triazole-bridging ligands and fulvene ligands with various metal salts, respectively. A. The coordination chemistry based on bent 1, 2, 4-triazole-bridging ligands The coordination chemistry of the triazole-bridging ligands 3,5-bis(4-pyridyl) -4-amino-1,2,4-triazole(L1), 3,5-bis(3-pyridyl)-4-amino-1,2,4-triazole(L2), 3,5-bis(2-pyridyl)-4-amino-1,2,4-triazole(L3) with inorganic Ag(I) and Cu(II) salts has been investigated, respectively. 7 new coordination polymers, namely {[Ag₃(L1)₂](NO₃)₃(H₂O)₄}_n(1), {[Ag₃(L1)₃](PF₆)₃·(H₂O)·(CH₃OH)}_n (2), {[Ag(L1)](ClO₄)·H₂O}_n(3), {[Ag(L2)](ClO₄)·CH₃OH}_n(4), {[Ag(L2)] (PF₆)·CH₃OH}_n(5), {[Ag₂(L2)₂](SiF₆)·2H₂O}_n(6), {[Cu(L3)] (SO₄)·0.5H₂O}_n (7) and 4 supramolecular complexes, namely [Ag(L3)]PF₆(8), [Ag(L3)]SbF₆(9), [Ag(L3)]ClO₄(10), [Ag(L3)]SO₃CF₃(11) were synthesized by combination of ligands L1-L3 with various Ag(I) salts and Cu(II) salts respectively. All compounds were fully characterized by IR, elemental analysis, TGA-DTA and single-crystal X-ray diffraction. B. The coordination chemistry based on bent 1, 3, 4-oxadiazole-bridging ligands The coordination chemistry of the oxadiazole-bridging ligands 2,5-bis(4-phenylamine)-1, 3, 4-oxadiazole(L6), 2,5-bis(4-benzonitrile)-1, 3, 4–oxadiazole(L8), 2,5-bis(3-benzonitrile)-1, 3, 4-oxadiazole(L9) with inorganic Ag(I) and Cu(II) salts has been investigated. Nine new coordination polymers, namely [Cu(L6)(C₅HF₆O₂)₂]CH₂Cl₂(12), {[Ag(L8)(H₂O)]ClO₄}_n(13), {[Ag(L8)]SO₃CF₃}_n(14), {[Ag(L9)]BF₄·0.5(C₆H₆)·H₂O}_n(15), {[Ag(L9) SbF₆]·H₂O}_n(16), {[Ag₂(L9)₂(SO₃CF₃)]·H₂O}_n(17), {[Ag₂(L9)(C₆H₆) (ClO₄)]·ClO₄}_n(18), {[Ag₂(L9)(H₂PO₄)₂]}_n(19), [Ag(L6)]SO₃CF₃(20) were synthesized based on them, respectively. C. Synthesis and coordination chemistry of fulvene ligand. One new fulvene ligand L11 was synthesized. Its coordination chemistry...