Synthesis And Characterization Of Aromatic Amidinate Supramolecular And Phosphorus Imido Compounds

The theoretical research and application of material science is one of the important branches of science and technology in this century. The supramolecular materials are emphasized as a type of developing advanced materials. In recent years, the development of charge-assisted hydrogen bond organic supramolecular polymers and coordination polymers contributed more to material science. In this project, a series of charge-assisted hydrogen bond supramolecular polymers and coordination polymers, or imido compounds were designed and synthesized. In order to seeking the potential application, the fluorescence properties of these polymers were investigated after determining their molecular structures.The research work is based on the addition reaction of a-hydrogen-free nitriles with LiN(SiMe3)2, followed by oxidized and hydrolyzed by aqueous hydrogen peroxide gave various reaction products. Nine novel compounds were prepared and characterized. The molecular structure of these compounds was determined by X-ray single diffraction, and the fluorescent property was also determined.Chapter 1:The new development and application of supramolecular chemistry and coordination polymeric chemistry were introduced. Some new research findings were listed. The research subject and progress of this research work was straightforward summarized.The reactions of LiN(SiMe3)2 with a-hydrogen-free nitriles, 2-methylbenzonitrile,2-,3-,4-nitrobenzonitrile and 3-cyanopyridine were carried out, followed the metatheses of dichlorophenylphosphine and oxidizing by hydrogen peroxide or silver trifluoro methanesulfonate. Total of five compounds were prepared, ionic supramolecular polymers 2a,2b,2c,2d and the coordination compound 2e. The fluorescent property of ionic supramolecular compounds 2a,2c was detected. And it was found that the compound 2a demonstrated the similar emission and excition peaks with the compounds synthsized in our laboratory before. However, the nitro goup may result in the fluorescent quenching, the emission and excition peaks of compound 2c had not been detected.Chapter 3:The reactions of LiN(SiMe3)2 with two equivalents 2-,3-, 4-nitrobenzonitrile and 3-,4-cyanopyridine was were carried out, followed by the reaction of metatheses of dichlorophenylphosphine and oxidized by hydrogen peroxide. Four compounds were obtained. They are the imido compounds with N, P, O atoms. And the reaction mechanism of those compounds was explored in detail.At last, the contents of Chapter 2 and 3 were summarized. The synthesis and application of fluorescence of supramolecular polymers and the catalysis of phosphorus imido ligands were viewed.