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1. An ansa-metallocene compound represented by the following Chemical Formula 1: wherein M1 is a transition metal of Group 3, Group 4, or Group 5 of the Periodic Table, or of an actinide or lanthanide; X's, which may be the same or different, are each a halogen; A is an element of Group 14 of the Periodic Table and functions as a bridge group linking two indenyl groups; R1 is an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an alkylaryl having 7 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, or an aryl having 6 to 20 carbon atoms; R2 is hydrogen, an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an alkylaryl having 7 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, or an aryl having 6 to 20 carbon atoms; R3, R3′, R4, and R4′, which may be the same or different, are independently an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, an alkylaryl having 7 to 20 carbon atoms, an arylalkyl having 7 to 20 carbon atoms, or an aryl having 6 to 20 carbon atoms; and n is an integer of 1 to 20. |
