A process comprising: contacting one or more olefins with a catalyst system at a temperature, a pressure, and for a period of time sufficient to produce a polyolefin comprising a) at least 50 % allylic vinyl end groups; and b) an Mn of at least 200 g/mol, as determined by 1 H NMR; the catalyst system comprising an activator and a catalyst compound according to Formula I, Formula II, or a combination thereof: Formula I being represented by: wherein M is a Group 3, 4, 5 or 6 transition metal; each X is, independently, a univalent C 1 to C 20 hydrocarbyl radical, a functional group comprising elements from Groups 13 - 17 of the periodic table of the elements, or X 1 and X 2 join together to form a C 4 to C 62 cyclic or polycyclic ring structure, provided, however, where M is trivalent then X 2 is not present; each R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8, R 9, R 10, R 11, R 12, R 13, R 14, R 15, R 16, R 17, R 18, R 19, R 20, R 21, R 22, R 23, R 24, R 25, R 26, R 27, and R 28 is, independently, a hydrogen, a C 1 -C 40 hydrocarbyl radical, a functional group comprising elements from Groups 13 - 17 of the periodic table of the elements, or two or more of R 1 to R 28 may independently join together to form a C 4 to C 62 cyclic or polycyclic ring structure, or a combination thereof; and Y is a divalent C 1 to C 20 hydrocarbyl; Formula II being represented by: wherein M is a Group 3, 4, 5 or 6 transition metal; each X is, independently, a univalent C 1 to C 20 hydrocarbyl radical, a functional group comprising elements from Groups 13 - 17 of the periodic table of the elements, or X 1 and X 2 join together to form a C 4 to C 62 cyclic or polycyclic ring structure, provided, however, where M is trivalent then X 2 is not present; each R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8, R 9, R 10, R 11, R 12, R 13, R 14, R 15, R 16, R 17, R 18, R 19, R 20, and R 21 is, independently, a hydrogen, a C 1 -C 40 hydrocarbyl radical, a functional group comprising elements from Group 13 - 17 of the periodic table of the elements, or two or more of R 1 to R 21 may independently join together to form a C 4 to C 62 cyclic or polycyclic ring structure, or a combination thereof; subject to the proviso that R 19 is not a carbazole or a substituted carbazole radical, and Y is a divalent C 1 to C 20 hydrocarbyl radical. contacting one or more olefins with a catalyst system at a temperature, a pressure, and for a period of time sufficient to produce a polyolefin comprising a) at least 50 % allylic vinyl end groups; and b) an Mn of at least 200 g/mol, as determined by 1 H NMR; a) at least 50 % allylic vinyl end groups; and b) an Mn of at least 200 g/mol, as determined by 1 H NMR; the catalyst system comprising an activator and a catalyst compound according to Formula I, Formula II, or a combination thereof: Formula I being represented by: wherein M is a Group 3, 4, 5 or 6 transition metal; each X is, independently, a univalent C 1 to C 20 hydrocarbyl radical, a functional group comprising elements from Groups 13 - 17 of the periodic table of the elements, or X 1 and X 2 join together to form a C 4 to C 62 cyclic or polycyclic ring structure, provided, however, where M is trivalent then X 2 is not present; each R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8, R 9, R 10, R 11, R 12, R 13, R 14, R 15, R 16, R 17, R 18, R 19, R 20, R 21, R 22, R 23, R 24, R 25, R 26, R 27, and R 28 is, independently, a hydrogen, a C 1 -C 40 hydrocarbyl radical, a functional group comprising elements from Groups 13 - 17 of the periodic table of the elements, or two or more of R 1 to R 28 may independently join together to form a C 4 to C 62 cyclic or polycyclic ring structure, or a combination thereof; and Y is a divalent C 1 to C 20 hydrocarbyl; Formula II being represented by: wherein M is a Group 3, 4, 5 or 6 transition metal; each X is, independently, a univalent C 1 to C 20 hydrocarbyl radical, a functional group comprising elements from Groups 13 - 17 of the periodic table of the elements, or X 1 and X 2 join together to form a C 4 to C 62 cyclic or polycyclic ring structure, provided, however, where M is trivalent then X 2 is not present; each R 1, R 2, R 3, R 4, R 5, R 6, R 7, R 8, R 9, R 10, R 11, R 12, R 13, R 14, R 15, R 16, R 17, R 18, R 19, R 20, and R 21 is, independently, a hydrogen, a C 1 -C 40 hydrocarbyl radical, a functional group comprising elements from Group 13 - 17 of the periodic table of the elements, or two or more of R 1 to R 21 may independently join together to form a C 4 to C 62 cyclic or polycyclic ring structure, or a combination thereof; subject to the proviso that R 19 is not a carbazole or a substituted carbazole radical, and Y is a divalent C 1 to C 20 hydrocarbyl radical.