Monocyclopentadienyl transition metal catalyst and olefin polymerization process

A monocyclopentadienyl metal compound corresponding to the formula:

• ##STR5## Wherein, M is a metal selected from the group consisting of titanium, zirconium, and hafnium;
• m is one, two, or three, depending on the valency and oxidation state of M;
• R' is each independently selected from the group consisting of hydrogen, hydrocarbyl groups, silyl groups, germyl groups, and stannyl groups, including wherein two or more R' groups can be joined to form a ring;
• L is a covalent bridging group containing a main group element from Group 14 selected from the group consisting of carbon, silicon, germanium, and tin;
• E is datively bonded to M, and is a main group element from Group 15 selected from the group consisting of nitrogen, phosphorous, arsenic, and antimony;
• R is independently selected from substituted hydrocarbyl groups, unsubstituted hydrocarbyl groups, and silyl groups, wherein two R-groups can be joined to form a ring, and wherein an R-group and L can be joined to form a ring;
• X is each independently selected from the group consisting of hydrogen, halides, substituted hydrocarbyl groups, unsubstituted hydrocarbyl groups, silyl groups, alkoxides, aryloxides, amides, arylamides, phosphides, arylphosphides, carboxylates, and sulfonates;
• D is a neutral Lewis base;
• and
• n is 0, 1, or 2.