Synthesis And Properties Of N-Heterocyclic Carbene And Transition Metals,Ruthenium Copper And Zinc

For organometallics,the diversites come from the variation of the ligands which c ontained different functional groups and various coordination structures.As a variety o f aggregation,organometallic are widely used in chemistry,chemical industry,catalysis and other fields.Since their strong electronic donation ability and the steric hindrance effect,the nitrogen heterocyclic carbene(NHC)ligand,can effectively enhance the sta bility of the organometallic complexes.Furthermore,the convenience of preparation pr ocedure has attracted extensive attention of researchers.Among the organometallic complexes studied in this paper,ruthenium complexes have rich redox and luminescent properties,which are widely used in the fields of ph otochemistry,biochemistry and electrochemistry,and can be used as fluorescent probes for biological detection;copper complexes have a wide range of applications in fluore scence,which can be used as detectors to detect the content of copper ions in water and human hair;zinc complexes also have good optical properties and is used in tissu esections and chemical fluorescence sensors.In addition,the metal complexes of coppe rand ruthenium have good catalytic properties,and play an important role in different catalytic fields.The aims of this paper to synthesize metal complexes with new struct ure by solvothermal method,and study the structure,fluorescence properties and cataly tic properties of three organometallic complexes by a series of characterization method s.The work is as follows:1.A benzyl functionalized nitrogen heterocyclic carbene ligand was synthesized a nd characterized by nuclear magnetic resonance 1H NMR and 13 C NMR to determine the target compound,and the purity is in accordance with the next reaction.2.Using a synthesized benzyl functionalized nitrogen heterocyclic carbene ligand as a raw material,and dichloro(4-methylisopropylbenzene)ruthenium(II)dimer,copper sulfate,and zinc nitrate hexahydrate as a precursor under solvothermal condition,the c arbene complexes of ruthenium,copper and zinc carbene complex were successfully o btained.The structures and stability were determined by x-ray single crystal diffractio n,infrared analysis,thermogravimetric analysis,powder x-ray diffraction and other detec tion methods.3.Fluorescence performance tests were carried out on these three carbene comple xes.The studies showed that zinc carbene complexes have good fluorescence properties,while ruthenium carbene complexes and copper carbene complexes can quench fluor escence.4.The preliminary test of the catalytic performance on the alcohol dehydrogenatio n coupling reaction was carried out by using the synthesized ruthenium and copper ca rbene complexes as catalysts.The catalytic effects were not as good as reported cataly st.