Ligand compound, metallocene compound, and method for preparation of olefin-based polymer using the same

A metallocene compound represented by the following Chemical Formula 2:

• in the Chemical Formula 2,
• M is a Group 4 transition metal;
• X1 and X2 are identical or different, and are independently, halogen, a C1-20 alkyl group, a C2-20 alkenyl group, a C6-20 aryl group, a nitro group, an amido group, a C1-20 alkylsilyl group, a C1-20 alkoxy group, or a C1-20 sulfonate group;
• R1 to R16 are identical or different, and are independently, hydrogen, halogen, a C1-20 alkyl group, a C2-20 alkenyl group, a C3-20 cycloalkyl group, a C4-20 cycloalkylalkyl group, a C1-20 alkoxy group, a C6-20 aryl group, a C5-20 heteroaryl group, a C7-20 alkylaryl group, or a C7-20 arylalkyl group, and two or more neighboring groups of R1 to R16 may be connected with each other to form a substituted or unsubstituted aliphatic or aromatic ring, provided that all of R1 to R16 are not hydrogen;
• L is a direct bond or a C1-10 alkylene group;
• R is a substituted or unsubstituted phenyl group, naphthyl group, C3-20 cycloalkyl group, or C1-20 alkoxyl group;
• and
• Q1 and Q2 are identical or different, and are independently, hydrogen, halogen, a C1-20 alkyl group, a C2-20 alkenyl group, a C1-20 alkoxy group, a C6-20 aryl group, a C7-20 alkylaryl group, or a C7-20 arylalkyl group.