A catalyst composition comprising the contact product of an ansa -metallocene and an activator, wherein: the ansa -metallocene comprises a compound having the formula: (X 1)(X 2)(X 3)(X 4)M 1, wherein: M 1 comprises titanium, zirconium, or hafnium; X 1 and X 2 independently comprise a substituted cyclopentadienyl, a substituted indenyl, or a substituted fluorenyl; one substituent on X 1 and X 2 comprises a bridging group having the formula E(Cyc), wherein E is a carbon atom, and E is bonded to both X 1 and X 2, and wherein Cyc is (CH 2 CH 2 CH 2 CH 2) or (CH 2 CH 2 CH 2 CH 2 CH 2) with each end connected to E to form a ring structure; one substituent on X 1 or X 2 comprises a substituted or an unsubstituted alkenyl group; X 3 and X 4 independently comprise: F, Cl, Br, or I; a hydrocarbyl group, H, or BH 4 a hydrocarbyloxide group, a hydrocarbylamino group, or a trihydrocarbylsilyl group; OBR A 2 or SO 3 R A; wherein R A is an alkyl group or an aryl group; and the activator comprises: an activator-support comprising a solid oxide treated with an electron-withdrawing anion, a layered mineral, an ion-exchangeable activator-support, or any combination thereof; an organoaluminoxane compound; an organoboron compound or an organoborate compound; or any combination thereof. the ansa -metallocene comprises a compound having the formula: (X 1)(X 2)(X 3)(X 4)M 1, wherein: M 1 comprises titanium, zirconium, or hafnium; X 1 and X 2 independently comprise a substituted cyclopentadienyl, a substituted indenyl, or a substituted fluorenyl; one substituent on X 1 and X 2 comprises a bridging group having the formula E(Cyc), wherein E is a carbon atom, and E is bonded to both X 1 and X 2, and wherein Cyc is (CH 2 CH 2 CH 2 CH 2) or (CH 2 CH 2 CH 2 CH 2 CH 2) with each end connected to E to form a ring structure; one substituent on X 1 or X 2 comprises a substituted or an unsubstituted alkenyl group; X 3 and X 4 independently comprise: F, Cl, Br, or I; a hydrocarbyl group, H, or BH 4 a hydrocarbyloxide group, a hydrocarbylamino group, or a trihydrocarbylsilyl group; OBR A 2 or SO 3 R A; wherein R A is an alkyl group or an aryl group; and M 1 comprises titanium, zirconium, or hafnium; X 1 and X 2 independently comprise a substituted cyclopentadienyl, a substituted indenyl, or a substituted fluorenyl; one substituent on X 1 and X 2 comprises a bridging group having the formula E(Cyc), wherein E is a carbon atom, and E is bonded to both X 1 and X 2, and wherein Cyc is (CH 2 CH 2 CH 2 CH 2) or (CH 2 CH 2 CH 2 CH 2 CH 2) with each end connected to E to form a ring structure; one substituent on X 1 or X 2 comprises a substituted or an unsubstituted alkenyl group; X 3 and X 4 independently comprise: F, Cl, Br, or I; a hydrocarbyl group, H, or BH 4 a hydrocarbyloxide group, a hydrocarbylamino group, or a trihydrocarbylsilyl group; OBR A 2 or SO 3 R A; wherein R A is an alkyl group or an aryl group; and the activator comprises: an activator-support comprising a solid oxide treated with an electron-withdrawing anion, a layered mineral, an ion-exchangeable activator-support, or any combination thereof; an organoaluminoxane compound; an organoboron compound or an organoborate compound; or any combination thereof. an activator-support comprising a solid oxide treated with an electron-withdrawing anion, a layered mineral, an ion-exchangeable activator-support, or any combination thereof; an organoaluminoxane compound; an organoboron compound or an organoborate compound; or any combination thereof.