Organometallic compound useful as cocatalyst for polymerizing olefins

Can by a,) and b) Zhijian of reaction obtained of organic metal compounds, which a,) for has Xia type (I) of compounds, which Ra, and Rb, and Rc and Rd for each other same or different of hydrocarbon base, b) for has type (II): MtR13 of Louis acid, which: Mt belonging to element periodic table (IUPAC) 13th family of metal; the R1 mutual Zhijian same or different, selected since halogen, and halogen generation C6-C20 of aryl and halogen generation C7-C20 of n-Fong base ; Two two groups can also be mentioned with Mt of metal to form a heavy ring. These compounds are used as catalysts for olefin polymerization.