Ansa-metallocene compound and method for preparing supported catalyst using the same

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 are optionally the same or different, are each a halogen;
• R1 and R2 are independently an alkyl having 1 to 4 carbon atoms;
• R3 and R3′, which are optionally the same or different, are independently an alkyl having 1 to 20 carbon atoms, an alkenyl having 2 to 20 carbon atoms, or an arylalkyl having 7 to 20 carbon atoms;
• R4 and R4′, which are optionally the same or different, are independently an aryl having 6 to 20 carbon atoms, or an alkylaryl having 7 to 20 carbon atoms;
• n is an integer of 1 to 6;
• and A is silicon (Si).