| abstract |
(57) [Summary] (Modifications) [PROBLEMS] To provide a metallocene having high activity and a high melting point after being converted into a polymerization active species. A novel transition metal compound containing a specific type of bridge that can be used for the polymerization of olefins to form polyolefins, particularly polyolefins of low molar mass, is a compound having the following structural formula. Here, M 1 represents a metal of transition group III, IV or VI of the periodic table of the elements, and Z represents a bridge structural unit between two cyclopentadienyl rings. |