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Synthesis, Crystal Structure and Properties of Adamantane, Benzimidazole Ligands and Complexes

Author: HongHuiQin
Tutor: LiuJiaCheng
School: Northwest Normal University
Course: Inorganic Chemistry
Keywords: adamantane crystal structure benzimidazole Ni(Ⅱ) Complex thermal stability analysis
CLC: O621.13
Type: Master's thesis
Year: 2011
Downloads: 76
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Abstract


In recent years, coordination compounds with novel structure topological have potential applications in functional materials, metal-organic frameworks and molecular recognition, have caused great attention. Because of the special spatial structure, unique physical and chemical properties, and strong design of molecules, adamantane and its derivatives have received a great deal of attention. Benzimidazole derivatives with many advantages: strong coordination ability, more coordination points and more patterns, can be bridging in various ways with metal ions and other bridging ligand, widely used in the construction of the functional complexes. In this thesis we initiated the studies of synthesis of adamantane polydentate ligands, preparation of metallic complexes; and synthesis of benzimidazole polydentate ligands, preparation of metallic complexes. A series of significant results and developments have been achived and the main interesting results are as fellows:1. 1,3,5,7-tetrakis（4-pyridylformyloxy）-adamantane ligand was synthesized with adamantane and bromine by three reaction steps: substitution, hydrolysis and esterification; and its CoⅡ, CuⅡ, NiⅡ, ZnⅡmetal complexes were synthesized with corresponding salts. Its CoⅡcomplex was synthesized and the crystal structure was analyzed.2. 1,3,5,7-tetrakis（4-imidazolylphenyl）-adamantane rigid ligand was synthesized with 1-bromoadamantane and benzene multi-step substitution reaction. As a new rigid ligand, has not been synthesized and reported before. It has been characterized by infrared spectroscopy, 1H-NMR spectroscopy and elemental analysis. Synthesis conditions, spectroscopic properties and functional applications were characterized and discussed.3. 2-[[（4-Pyridyl）methyl]thio]-1H-benzimidazole ligand was synthesized with 1,2-diaminobenzene, carbonyl disulfide and 4-（chloromethyl）pyridine hydrochloride by several reactions, and single crystal of compound [Ni（L）2（NCS）2（CH3OH）2] was obtained. Characterized by IR spectra, 1H-NMR spectroscopy, elemental analysis, X-ray diffraction and TG analysis.

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Organic Chemistry general issues > Theory of organic chemistry,physical organic chemistry > Organic Chemistry Structure Theory
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