Crystal Engineering Of Nitro-substituted Benzene-carboxylic Acid Complexes

By using the principle and method of crystal engineering, synthesis of complexes with specialcomponents and properties, which involved in various fields of structural chemistry, materialchemistry and supramolecular chemistry and so on important scientific problems and researchhotspot. Especially, rational design and considerate selecting special organic structure throughappropriative approach of assembly should be the key in constructing target polymers, which is agreat challenge for chemical researchers. The research and development of crystal engineeringbased on a large number of experimental data and experience. It needs us from each angle to doresearch, summarize experience and rules, and ultimately realize directional crystal synthesis offunctional materials.And then sixteen new compounds based on nitro-substituted benzene-carboxylic acid weresynthesized by assembly principle of crystal engineering. The thesis includes four chapters.Chapter1discusses the definition, development of crystal engineering, especially the reason whywe study of the crystal engineering. Than discusses why we choose the nitro-substituted benzene-carboxylic. The work of this article and progress of the related research were discussed too. Inchapter2, we have selected some transition metals,3-nitrobenzoic acid and nitrogen-containingligands, synthesis of nine new functional coordination complexes. Crystal structure analysis,elemental analysis and IR, TGA, and some compounds of the charge-discharge, magnetic,dielectric and ferroelectric properties are characterized. In chapter3, eight compounds have beensynthesized by using three nitro-substituted dicarboxylic acids. Than in chapter4, we discussesnitro-substituted group, as an important part of the ligand, can not only play an important role inthe formation of complexes, but also can exert a deciding influence structures and functions (orproperties).As a conclusion, the research work of this thesis enriches and development of the crystalengineering, supramolecular chemistry, coordination chemistry and functional materials science,and also provides the new methods and experiment basis to design and construct functionalcoordination polymers. Therefore, this research work will have a good application and scientificvalues in the future.