The Quinazolinone Complex Synthesis, Structure And Nature Study

In this paper, new transition metal olefin polymerization catalysts with high catalytic capacity have been introduced based on Brookhart bis(imino)pyridyl-transition metal catalyst. The key for preparing this type of catalysts is to design ligands. Catalysts with great different activities often are obtained by modified ligands.The main studies are as fellows:With 2,6-dipicolinic acid as the starting material, a novel compound 2,6-diquinazolinedione pyridine has been obtained by chlorination and amidation, and characterized by element analysis, IR, UV-visible spectroscopy,1H NMR and solid-state fluorescence. At the same time, the synthesis mechanism of quinazolinedione has been proposed.Six novel complexes have been synthesized through a hydrothermal method with 2,6-diquinazolinedione pyridine as ligand and transition metals, and characterized by elemental analysis, IR and UV-visible spectroscopy, solid-state fluorescence spectroscopy and X-ray single crystal diffraction. Trinuclear complexes of Ni (â…¡), Co (â…¡), Cr (â…¢) are the same in macro structure, but show a wonderful configuration change in micro structure.N,N'-bis(hydroxysalicylic)-2,6-Pyridinediamine has been obtained by 2,6-diamino-pyridine and 2,4-dihydroxybenzaldehyde as starting material. Five complexes have been synthesized and characterized by elemental analysis, IR, UV-visible spectroscopy, fluorescence spectroscopy and X-ray powder diffraction.