Fluorine-containing C1 symmetric silicon-bridged metallocene complex and application thereof

The invention provides a fluorine-containing C1 symmetric silicon-bridged metallocene complex, and particularly relates to the technical field of chemical synthesis, the metallocene complex ligand contains a 2-methyl-4-(3, 5-difluorophenyl) indenyl and an indolo-indenyl, the structural formula of the metallocene complex ligand is as shown in the formula I, M is Ti, Zr or Hf, R1 is alkyl or aryl with 1-30 carbon numbers, R2 and R3 are the same or different, and R1 and R2 are the same or different. The R1 and R2 are independently selected from one of halogen, alkyl or aryl with 1-30 carbon atoms, alkyl (aryl) oxy, sulfydryl, carboxyl, amido and phosphino, and R4 is alkyl with 1-30 carbon atoms or aryl with 6-30 carbon atoms, and the R3 and R4 are independently selected from one of halogen, alkyl or aryl with 1-30 carbon atoms, alkyl (aryl) oxy, sulfydryl, carboxyl, amido and phosphino; as a main catalyst, the metallocene complex can catalyze ethylene or propylene homopolymerization reaction in a high-activity m