Syntheses,Structures And Properties Study Of New Metal-Quinolone Coordination Complexes

The aim of this thesis is to synthesize new metal-quinolone coordination complexes on the basis of different quinolones, aromatic polycarboxylate ligands and metal ions (or their multi-nuclear clusters). In this dissertation, we have focused our study on the syntheses, structure and properties of metal-quinolone complexes with kinds of ligands, analysis influence of ligands and metal ions on the formation of the metal-quinolone complexes and to explore the relationships between structures and properties for these new compounds. We have prepared a series of new metal-quinolone complexes on the basis of hydrothermal technique. Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by IR spectra, TG, X-ray powder diffraction and elemental analyses. The luminescent properties and magnetic properties of these compounds have been studied.1. Five new metal-quinolone complexes with entangled and helical characters have been hydrothermally synthesized on the basis of metal ions or their multi-nuclear clusters connected by aromatic polycarboxylate ligands and two different quinolones: [Cd3(ppa)2(oba)2(H2O)3]·0.25H2O (1) [Cd2(saraH)2(bpdc)2]·4.5H2O (2) [Mn(sara)2]·2.5H2O (3) [Mn(ppaH)(oba)]·3H20 (4) [Zn(ppaH)(sdba)]·1.5H2O (5)Compound 1 is the first 3D interpenetrated metal-quinolone complex, containing unique 5-fold interlocking tri-flexure helices and 15-fold interwoven helices, defines an unprecedented 3-fold interpenetrated double-edged pseudo-diamondoid (pseudo-dia) network. Compound 2 is an uncommon 2D self-threading network containing unusual meso helices. Compound 3 exhibits a novel (2Dâ†'3D) polythreaded architecture containing left- and right-handed helices. The structures of compounds 4 and 5 are closed to be isostructural and consist of novel 1D polymeric chains spanning two different directions, which display an intriguing 1Dâ†'3D inclined polycatenation of supramolecular ladders. The fluorescent study on the compounds based on d10 metals of compounds 1,2 and 5 are also discussed.2. A serses of new metal-quinolone complexes have been hydrothermally synthesized on the basis of metal ions or their multi-nuclear clusters connected by aromatic polycarboxylate ligands and a serses of quinolones: [Cd3(ppa)2(bpdc)2(H2O)2]·5H2O (6) [Cd2(sara)2(μ2-Cl)2]·5H2O (7) [Cd(cfH)(bpdc)]·H2O (8) [Cd(norfH)(bpdc)]·H2O (9) [Mn(norfH)(bpdc)]·H2O (10) [Mn2(cfH)(odpa)(H2O)3]·0.5H2O (11) [Co2(norfH)(bpta)(μ2-H2O)(H2O)2]·H2O (12) [Co3(saraH)2(Hbpta)2(H2O)4]·9H2O (13) [Zn(levofH)(sdba)]·H2O (14) [Co(cfH)(oba)(H2O)2] (15) [Ni(cfH)(oba)(H2O)2] (16) [Mn(cfH)(bpda)(H2O)]·2H2O (17) [Mn(ppaH)2(bpdc)] (18) [Mn(lomeH)2(bpdc)]·4H2O (19)Compound 6 is a unique 3D metal-ppa complex containing the intertwined homo-axis covalent helices. Compound 7 is an unprecedented 3D helical metal-quinolone complex constructed by inorganic Cl- ions. Compounds 8-10 consist of novel 2D arm-shaped helical layers. Compounds 11 and 12 consist of novel 2D arm-shaped helical layers based on tetranuclear metal clusters. Compound 13 exhibits a novel 2D bilayer structure, which represents the first example of metal-quinolone complexes with 2D bilayer structure. Compound 14 is a unique chiral metal-levofH complex containing right-handed helices. Compounds 15 and 16 are isostructural and feature 1D helical structure. Compound 17 exhibits a double-chain-like ribbon formed from the interconnection of [Mn2(cfH)2(μ-CO2)2] dimers with bpda ligands. Compounds 18 and 19 contain similar 1D zigzag chain. The fluorescent study on the compounds based on d10 metals of compounds 6,8 and 9 and the magnetic properties of compounds 10-13,17 have been studied.