ИСТИНА

The invention relates to a metallocene complex, I (R1, R2 = H, alkyl, aryl; R3 = C1-​10 alkyl; R' = H, alkyl, aryl, different R' substituents can be connected to form a ring structure; B = 1,​2 phenylene bridging moiety, which can be optionally substituted; Mt = Ti, Zr, Hf, X = anionic ligand; z = no. of X groups and equals the valence of Mt minus 2)​. The invention also relates to a catalyst comprising the reaction product of the metallocene complex and a cocatalyst. Further the invention relates to a (co)​polymn. process of olefinic monomers.