| This thesis consist of two parts:Firstly,we employed a V-shaped semi-rigid ligand,4,4'-bis?pyridine-4-yl?diphenyl ether?OPY?and five coordination polymers with distinct structural features were synthesized by hydrothermal method.Secondly,six coordination polymers 6-11 with novel frameworks and properties have been synthesized based on a semi-rigid triangle ligand[tris?4-?1H-imidazol-1-yl?phenyl?amine]?TIPA?by solvothermal method.1.Syntheses,structures,and properties of coordination polymers based on4,4'-bis?pyridine-4-yl?diphenyl ether?OPY?Solvothermal reactions of 4,4'-bis?pyridine-4-yl?diphenyl ether?OPY?and naphthalene-2,6-dicarboxylic acid?H2ndc?,thiophene-2,5-dicarboxylic acid?H2tda?,benzene-1,3,5-tricarboxylic acid?H3btc?with transition salts yielded five complexes,namely,{[Cd?OPY?2?ndc??H2O?]·H2O}n?1?,{[Cd?OPY??tdc??H2O?]·H2O}n?2?,[Zn?OPY??tdc?]n?3?,[CuCl?OPY?]n?4?,[Co?OPY?1.5?Hbtc?]n?5?.Compound 1 is a2-fold parallel interpenetrating network consist of two identical sets of 2D layer motifs and shows both polyrotaxane and polycatenane characters.The basic structure of compound 2 is a one-dimensional[Cd?OPY?2?tdc??H2O?]n chain of with?1–OPY on each side,which was extended to a three-dimensional supramolecular structure hydrogen bonds and?–?stacking interactions.Compound 3 represent the first example of a five-fold interpenetrated 43·62·8-gis network topology.Compound 4represent the first example of a 2D?3D polycatenation structure via vertical interpenetration of two set layers.Compound 5 is a 3D pillar-layered-like framework,in which the OPY ligand adopts two different coordination modes not only expands dinuclear cobalt chain to a 3D framework,but also enhances the stability of compound 1.Magnetic measurements performed on 5 indicate the occurrence of weak antiferromagnetic coupling between the neighboring Co2+ions.2.Syntheses,structures,and properties of coordination polymers based on[tris?4-?1H-imidazol-1-yl?phenyl?amine]?TIPA?Six intriguing coordination polymers with unique topologies and properties have been synthesized by employed a triphenylamine based N-donor ligand and different carboxylic ligands,heptanedioic acid?H2pim?,glutaric acid?H2glu?,terephthalic acid?H2bdc?,benzene-1,2,4,5-tetracarboxylic acid?H4btc?.{[Zn?TIPA?·?pim?]·3H2O]}n?6?,{[Zn?TIPA?·?pim?1/2]·2H2O·NO3]}n?7?,{[Zn?TIPA?·?glu?]·2H2O}n?8?,{[Co2?TIPA?2·?bdc?2·4H2O]·H2O·DMF}n?9?,{[M?TIPA??btec?0.5]H2O}n,[M=Co?10?,Zn?11?]?Compound 6 is a 2D+2D?2D parallel entangle structure by penetrating and interlocking modes.Compound 7 and 6 were synthesized by the same starting materials,but 7 crystallizes in chiral space group and has a?10,3?-a,srs topological feature.Compound 8 is a four-fold interpenetrating 3D framework with dia topology.Compound 9 is a 2D?3D inclined interpenetrating net,in which the pim2-anion with?1-?1:?0 coordination mode bind to Co2+ion and distribute equally on each side of each 63 layer.Compound 10 and 11 are isostructural.Both TIPA and btc4-ligands acting as bidentate bridging ligand expand the dinuclear Co unit to a two-fold interpenetrated pcu topological network.The magnetic property measurement on 10indicates that there exists weak antiferromagnetic interactions amongst Co?II?ions within dinuclear Co unit. |
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