Metal complexes containing bridging heteroatom for olefin-polymerization-process

A metal complex corresponding to the formula:

• where M is Ti, which is in the +2, +3 or +4 formal oxidation state;
• RA independently each occurrence is hydrogen, RB or T′RBj;
• j is 1 or 2, and when j is 1, T′ is oxygen or sulfur and when j is 2, T′ is nitrogen or phosphorus,
• RB independently each occurrence is a group having from 1 to 80 atoms not counting hydrogen, which is hydrocarbyl, hydrocarbylsilyl, halo-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, hydrocarbylamino-substituted hydrocarbyl, or hydrocarbylsilyl-substituted hydrocarbyl, or two RB groups are joined together forming a divalent ligand group;
• R* independently each occurrence is hydrogen, or a member selected from hydrocarbyl, hydrocarbyloxy, silyl, halogenated alkyl, halogenated aryl, and combinations thereof, said R* having up to 20 nonhydrogen atoms;
• X is an anionic or dianionic ligand group having up to 60 atoms;
• X′ independently each occurrence is a Lewis base ligand having up to 20 atoms;
• p is a number from 0, 1 or two;
• q is zero, 1 or 2.