摘要 |
This invention relates to a catalyst compound represented by the formula: wherein: M is a Group 3 to 12 transition metal; each R<SUP>a </SUP>is, independently, a hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group or halogen; each of R<SUP>1</SUP>, R<SUP>2</SUP>, R<SUP>3</SUP>, R<SUP>4</SUP>, R<SUP>5</SUP>, R<SUP>7</SUP>, R<SUP>8</SUP>, R<SUP>9</SUP>, R<SUP>10</SUP>, and R<SUP>11 </SUP>is, independently a hydrogen, a hydrocarbyl group, a substituted hydrocarbyl group or halogen; R<SUP>6 </SUP>is hydrogen, a hydrocarbyl group, or a substituted hydrocarbyl group; x is 0, 1, 2, 3 or 4; and each Z is, independently, a group 15 atom. This invention also relates to catalyst systems comprising the above catalyst compound and a activator and the use of such catalyst systems to polymerize monomers, including olefin monomers.
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