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Supramolecular Complexes And Titanocene Complexes Constructed By Dicarboxylic Acids (H2DTB, H2TDA) And Containing N And O Ligands

Posted on:2008-06-25Degree:MasterType:Thesis
Country:ChinaCandidate:K T ZhangFull Text:PDF
GTID:2121360215499503Subject:Inorganic Chemistry
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The coordination compound by its great variety with bonding pattern andthe space structure in chemistry theory development, and with in other discipline mutualseepage, became the multitudinous disciplines the intersection and in its synthesis, thestructure, the nature and the theory research aspect have made a series of progress. AndDicarboxylic Acids (H2DTB, H2TDA) and Containing N and O Ligands have a goodmany coordination modes, which made the rational design and synthesis ofmetal-organic coordination polymers based on carboxylate ligand have attractedconsiderable attention. Making use of ligands and complexation ions with particularconformation can gain supramolecular complexes of anticipative structure andproperties through self-assemble process. The supramolecular complexes haveinteresting topological structure as potential applications as catalysis, smartpoto-electronic, medicine, magnetic and porous materials. Furthermore, there is muchinterest in the properties of titanocene complexes due to their ability to catalyse thepolymerization of olefinic monomers, hydrogenation and isomerization, antitumouractivity and antioxidative agents and their potential superacid catalysis. Aromatic acidderivatives occupy an important position in animate being, so the synthesis ofaromatic titanocene derivatives might provide necessary data and basic theories abouttheir physiologically activity and catalysis. In this thesis, aromatic ligands contained Nligands and two dicarboxylic acids: 2,2-dithiodibenzoic acid (H2DTB) and2,5-thiophenedi-carboxylic acid (H2TDA) have been choosed as functional ligands areconstructed for supramolecular complexes and titanocene complexes. The main resultsof this dissertation are as follows:1. Four novel supramolecular complexes have been obtained, which the structuralformula were: [Cu(phen)3][DTB]·6H2O, [Na16(phen)12(DTB)8]·4CH3OH·25H2O,[Na14(phen)10(DTB)6][Na2(phen)2(DTB)2]·24H2O, [Cu4(bipy)4(μ-OH)4Cl2]Cl2·6H2O.The structures of the supramolecular complexes have been characterized and analyzedby the X-ray single crystal diffraction, IR spectra, and thermal analyses, and so on. Theresults show that the two kinds of dicarboxylic acids play an important role in the construction of supramolecular complexes, which not only present many kinds of newmodes of coordinating to transition metals, but also could be as donor-acceptor ofhydrogen bonds to form multi-dimensional expanded networks. For example, the firstthree supramolecular complexes in front were three- dimensional expanded networkssupramolecular complexes, and the lastly were displayed one-dimensional openingtuble shape. All supramolecular complexes were under the lower dimensional buildingblocks and the weak interactions, such asπ-πaromatic stacking and hydrogen bondinteractions. In the meantime, some meaningful results of the supramolecularcomplexes, such as the properties of structure, assembly, spectra, can be given.2. Two novel aromatic acid titanocene complexes have been synthesised based on thereaction between bis(η5-cyclopentadienyl) dichlorotitanium (Cp2TiCl2) and the twodicarboxylic acids in aqueous media using many methods. The structure of the result ofthe reaction of bis(η5-cyclopentadienyl) dichlorotitanium with 2,5-thiophenedi-carboxylic acid or 2,2-dithiodibenzoic acid may be contained a single cyclopentadienylring and two O atoms in the two carboxyl simultaneity were linking to Ti atom. Thetwo novel aromatic acid titanocene complexes were characterized by the IR spectra, 1HNMR, elemental analysis and thermal analyses and so on. The structure, synthesis,condition of reactions and the characteristic of bonding have been study, whichabundanced the area of titanocene.
Keywords/Search Tags:Dicarboxylic Acids, Containing N Ligands, Supramolecular complexes, Titanocene complexes
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