| abstract |
The present invention relates to stable based on the Phenylphosphine alkane of chelate and all join tri-aryl compounds and preparation method thereof and the purposes as catalyst thereof.According to the present invention, described purpose is achieved by the rare earth triaryl coordination compound of all joining of formula (1), wherein RE=Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu；X=O、CRR；R 1 ,R 2 =phenyl；R, R '=independently of one another for H, there is the alkyl of n=10 carbon atom, phenyl or trimethyl silyl. |