Asymmetric beta-ketoiminate ligand compound, preparation method thereof, and organometal percursor comprising the same

摘要

An asymmetric beta-ketoiminate ligand compound, represented by the following chemical formula (4): wherein, R1 is a linear or branched alkyl group containing 1 to 8 carbon atoms; R2 is a linear or branched alkyl group containing 2 to 9 carbon atoms, with the proviso that R2 contains more carbon atoms than R1; R' is a linear or branched alkylene group containing 1 to 8 carbon atoms or a hydrocarbon containing 1 to 3 ethylene ether or propylene ether moieties, represented by -(CH2)nO- (n=2 or 3); R3 is a hydrogen atom or a linear or branched alkyl group containing 1 to 9 carbon atoms; d X is an oxygen atom or a sulfur atom.