Aroylhydrazones,formed by condensation of benzoylhydrazine with benzoylaldehyde,2-methoxybenzoylaldehyde and 2,4-dimethoxybenzoylaldehyde,reacted with TiCl 4 to form their corresponding complexes.The titanium complexe...Aroylhydrazones,formed by condensation of benzoylhydrazine with benzoylaldehyde,2-methoxybenzoylaldehyde and 2,4-dimethoxybenzoylaldehyde,reacted with TiCl 4 to form their corresponding complexes.The titanium complexes were characterized by elementary analysis,IR,and 1H-NMR.Their catalytic properties for ethylene polymerization performed up to 104gPE/(molTi·h).The resultant PE was studied by DSC,GPC,WAXD,FT-IR analyses.The results reveal that the product obtained is a typical linear polyethylene.展开更多
The dinuclear complex [VO(L)]2(μ-O)(H2L=salicylaldehyde benzoylhydrazone) was synthesized and characterized by elemental analysis, IR, UV, cyclic voltammetry. The results showed that two oxygen atoms and one ni...The dinuclear complex [VO(L)]2(μ-O)(H2L=salicylaldehyde benzoylhydrazone) was synthesized and characterized by elemental analysis, IR, UV, cyclic voltammetry. The results showed that two oxygen atoms and one nitrogen atom of the tridentate hydrazone ligand are coordinated to vanadium(Ⅴ) atom. The vanadium atom approximates to a distorted square pyramidal coordination sphere. The redox potentials of the title complex in different solvents follow the order: CH2Cl2<CH3CN<DMF.展开更多
文摘Aroylhydrazones,formed by condensation of benzoylhydrazine with benzoylaldehyde,2-methoxybenzoylaldehyde and 2,4-dimethoxybenzoylaldehyde,reacted with TiCl 4 to form their corresponding complexes.The titanium complexes were characterized by elementary analysis,IR,and 1H-NMR.Their catalytic properties for ethylene polymerization performed up to 104gPE/(molTi·h).The resultant PE was studied by DSC,GPC,WAXD,FT-IR analyses.The results reveal that the product obtained is a typical linear polyethylene.
文摘The dinuclear complex [VO(L)]2(μ-O)(H2L=salicylaldehyde benzoylhydrazone) was synthesized and characterized by elemental analysis, IR, UV, cyclic voltammetry. The results showed that two oxygen atoms and one nitrogen atom of the tridentate hydrazone ligand are coordinated to vanadium(Ⅴ) atom. The vanadium atom approximates to a distorted square pyramidal coordination sphere. The redox potentials of the title complex in different solvents follow the order: CH2Cl2<CH3CN<DMF.