Dissertation > Excellent graduate degree dissertation topics show

Preparation, Crystal Structure and Properties of Metal-Organic Coordination Compounds Based on N and O-containing Ligands

Author: GaoJing
Tutor: WangZuoZuo；CuiDeLiang
School: Shandong University
Course: Inorganic Chemistry
Keywords: 2,2’-bipyridine benzendicarboxylic acids nicotinic acid hydrothermal synthesis single crystal structure metal-organic coordination polymer
CLC: O641.4
Type: Master's thesis
Year: 2009
Downloads: 254
Quote: 1
Read: Download Dissertation

Abstract


Metalorganic coordination polymers are formed by the coordination bonds between organic ligands and metal ions. Diversified structures of the coordination polymers resulted in unusual properties of the novel materials.In this thesis, seven metal-organic coordination polymers with novel structures were hydrothermally synthesized. Structures and thermal stabilization of these coordination polymers were characterized by infrared spectra, elemental analysis, X-ray single crystal diffraction and thermal gravity methods. The main contents are as follows:1. 2,2’-bipyridine was used to synthesize one simple metal-organic coordination polymerⅠ:[Cu4（bpy）4（OH）4]Cl4·6H2O. Benzendicaiboxylic acids were then added to synthesize coordination polymersⅡ:[Cu2(C10H8N2)2（C8H4O5）2（H2O）2] andⅢ:{[Cu2（bpy）（tpa）2（bpy）]·H2O}n. Among them,Ⅰis tetra-nuclears structure which contains abundant inter-molecular hydrogen bonds O-H…Cl and O-H…O. These hydrogen bonds alternatively formed six-member and eight-member rings along b direction.Ⅱhas a novel three-dimensional network with a kind of binuclear-centered structure. In the process of synthesizingⅡ, isophthalic acid underwent in-situ oxidative hydroxylation before coordinating with Cu （Ⅱ） ion, proving that coordination compounds with novel structures are easily achieved by hydrothermal synthesis. The three-dimensional network ofⅢis constructed by inter-molecular hydrogen bonds andπ-πstacking interactions existing between two parallel "zigzag" chains in two different directions.2. Nicotinic acid was chosen as the ligand which contains N and O as the coordination atoms. Coordination polymersⅣ:[Cu（NcA）2]∞andⅤ:[Cu（NcA）2（H2O）4] were synthesized. Due to the different bond abilities of N and O with Cu（Ⅱ）, the structures ofⅣandⅤare different from each other. InⅣ, both N and O were bonded with Cu（Ⅱ） while only N did so inⅤ. Besides, the structure ofⅣis three-dimensional which was constructed by covalent bonds and coordinated bonds whileⅤhas a two-dimensional face structure extended by O-H…O hydrogen bonds andπ-πstacking interactions.3. On the basis of the synthesis ofⅤ, rare earth metal ions were added which have stronger bond abilities with O compared with N. One heteronuclear coordination polymerⅥ[LaCu3（C8H3O5）3（H2O）3]n and one rare earth metal-organic coordination polymerⅦ[Nd2（C8H6O4）4（H2O）]·H2O were synthesized. InⅥ, isophthalic acid was also in-situ oxidative hydroxylated like that inⅡ. While inⅦwhich was produced by liquid diffusion isophthalic acid was directly coordinated with Nd（Ⅲ）. Because the coordination number of rare earth metal ions is usually high, so a plenty of coordinated water molecules existed inⅥandⅦ, which further formed abundant hydrogen bonds. These hydrogen bonds helped to stabilize the structures ofⅥandⅦwhile at the same time extended them into three-dimensional networks.

Related Dissertations

  1. Hydrothermal Synthesis of Oxide Hollow Spheres,TB383.4
  2. Flexible,rigid,Synthesis and characterization of mixed ligand complexes,O621.1
  3. Theoretical Analysis of the Circular Dichroism Spectra of Transition Metal Schiff-Base Complexes,O641.4
  4. Syntheses, Structures and Properties of Coordination Polymers with Aromatic Dicarboxylates,O631.1
  5. Syntheses, Structures and Properties of Metal-organic Coordination Polymers Based on Long-Chain Aromaticmulticarboxylate,O631.3
  6. Solvothermal Synthesis of Indium Chalcogenides Integrated with 2,2’–Bipyridine,O627
  7. Preparation and Performance Study of Nicotinic Acid-Imprinted Polymers with Silica Gel as Sacrificial Carrier,O631.3
  8. Synthesis and Property Study of Polyoxotungstates and Polyoxomolybdates Decorated by Transition Metal and Organic Amine,O611.4
  9. Hydrthermal Synthesis Alkaline Fluroides Nanomaterlas and Host for Lanthaide Near-Infrared Luminecent Properties,TB383.1
  10. Preparation of Platinum Loaded TiO2 Nanotubes and Its Photocatalytic Performance,TB383.1
  11. Synthesis Crystal and Characterization of the Transition Metal Complexes,O641.4
  12. Copper and chromium on the mechanism of toxicity and chlorella detoxification method,X173
  13. Synthesis, Structures and Properties of Complexes of 4,4′-bipyridine and Pyrazine-2,3,5,6-tetracarboxylic Acid,O621.13
  14. The Studies and Applications of Chemicals from Renewable Resouces in Organic Synthesis,O621.25
  15. The bridged silsesquioxane hybrid materials and their metal complexes preparation and performance research,O634.41
  16. Synthesis and Characterization of Complexs Containing N、O Ligand,O621.13
  17. Preparation of Tris (2,2’-bipyridyl) Ruthenium Encapsulated Liposome and Its Applications in Electrochemiluminescent Immunoassay,R392.1
  18. Study on Preparation and Properties of Temperature Sensitive Paint,TQ637
  19. Study on Performances of Films of Novel Ruthenium (2,2’-bipyridine) Complexes,O627
  20. Study of New Electrogenerated Chemiluminescence Method Based on Tris (2,2’-bipyridyl)Ruthenium(Ⅱ),O627.8
  21. Synthesis of Substituted Pyridine Carboxylic Acid Derivatives,TQ253.2

CLC: > Mathematical sciences and chemical > Chemistry > Physical Chemistry ( theoretical chemistry ),chemical physics > Structural Chemistry > Complex chemistry ( coordination chemistry )
© 2012 www.DissertationTopic.Net  Mobile