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Syntheses, Characterization, Structure and Properties of Complexes with Carboxylate Derivatives from Terpyridine, Bipyridine and Pyridine

Author: ZhangBo
Tutor: HuHuaiMing
School: Northwestern University
Course: Physical and chemical
Keywords: synthesis metal-organic frameworks coordination polymers 2,2′′,2″-terpyridine-4′-carboxylic acid hydrothermal method
CLC: O626.32
Type: Master's thesis
Year: 2009
Downloads: 474
Quote: 2
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Abstract


The synthesis and assembly of metal-organic frameworks（MOFs） with open architectures or porous structures from small molecular building blocks have attracted high concern for some years and are still of considerable interests.Mixed-linker systems composed of both dicarboxylate and pyridyl ligand have always used for the preparation of novel coordination polymers,which are a kind of high functional compounds with outstanding optical,electric and magnetic properties,carboxyl derive ligands of terpyridine,bipyridine and pyridine are such a polydentate ligand and is expected to produce new cluster topologies by virtue of its coordinative flexibility.In this paper,two carboxyl derivative ligands and eight metal complexes were synthesized.the ligand of 2,2’:6’,2"-terpyridine-4’-carboxylic acid（Hctpy） were designed and synthesized.It was characterized by elemental analyses,UV-Vis,infrared spectrum,four novel complexes of Hctpy with lanthanide nitrates[Ln2（ctpy）6]n（Ln=Sm（Ⅲ）,Eu（Ⅲ）, Tb（Ⅲ）,Dy（Ⅲ）） were synthesized by hydrothermal method,and The complexes of Sm（Ⅲ）, Eu（Ⅲ） were determined by single crystal X-ray diffraction methods.The structure of them are similar and showed in 2-D planar structures.The 2-D planar structure is reported for the first time.the ligand of 2,2’-dipyridine-4,4’-dicarboxylic acid（bpdc） were designed and synthesized.It was characterized by elemental analyses,UV-Vis,infrared spectrum,two novel complexes of bpdc with transitional metal[Zn（bpdc）（H2O）3]·3H2O and [Mn（bpdc）（H2O）4]·3H2O were synthesized by diffuse method.They are connected to 2-D and 3-D supramolecular structure by H-bonds respectively.two novel complexes of Ln（Ⅲ） with pyridine-2,5-dicarboxylic acid（2,5-pydc） and pyridine-2,6-dicarboxylic acid（2,6-pydc）[Gd2（2,5-pydc）3（H2O）2]n and [Sm（2,6-pydc）3]·2NH2（CH3）2·CH3OH were synthesized by hydrothermal method.The prior is a 3-D net structure complex,and the posterior are connected to 2-D supramolecular structure by H-bonds.

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Heterocyclic compounds > Six heterocycles containing a single different atoms > Triazine (pyridine ) family
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