Patent ID: 6905999

Claim:
A compound of the formula (VI) wherein: R 1 is hydrocarbyl or substituted hydrocarbyl, R 2 is hydrogen, hydrocarbyl or substituted hydrocarbyl, and R 3 is hydrogen, hydrocarbyl, substituted hydrocarbyl or a functional group, provided that R 1 and R 2 taken together may be ortho-arylene or substituted ortho-arylene, or R 1 , R 2 and R 3 taken together may form one or more rings; Z is a bridging group of the formula (II), (III) or (IV) Q is nitrogen, oxygen, phosphorous or sulfur, provided that when Z is (II), Q is oxygen; R 4 is hydrogen, hydrocarbyl or substituted hydrocarbyl, provided that when Q is oxygen or sulfur R 4 is not present; R 6 is hydrogen, hydrocarbyl or substituted hydrocarbyl, provided that R 3 and R 6 taken together may form a ring; R 7 is hydrogen, hydrocarbyl or substituted hydrocarbyl, provided that R 3 , R 6 and R 7 taken together may form an aromatic ring, or R 6 and R 7 taken together may form a ring; R 8 is hydrogen, hydrocarbyl or substituted hydrocarbyl; R 9 is hydrogen, hydrocarbyl or substituted hydrocarbyl, provided that R 4 and R 9 taken together may be part of a double bond to an imino nitrogen atom, or R 8 and R 9 taken together may form a carbonyl with the carbon to which they are attached, or R 8 and R 9 taken together may form a ring, or R 4 and R 9 taken together may form a ring, or R 4 ,R 8 and R 9 taken together may form a ring, or R 6 , R 7 , R 8 and R 9 taken together may form an aromatic ring; R 10 , R 11 , R 12 and R 13 are each independently hydrogen, hydrocarbyl or substituted hydrocarbyl, provided that R 10 , R 11 , R 12 and R 13 taken together may be ortho-arylene; R 14 and R 15 are each independently hydrogen, hydrocarbyl or substituted hydrocarbyl, provided that R 14 and R 15 taken together may form a carbonyl with the carbon to which they are attached, or R 12 , R 13 , R 14 , and R 15 taken together may form an o-arylene group, or R 10 , R 11 , R 12 , R 13 , R 14 , and R 15 taken together may form a fused aromatic ring system, or R 13 and R 14 taken together may form a ring; R 20 and R 21 are each independently hydrogen, hydrocarbyl or substituted hydrocarbyl, or R 20 and R 21 taken together may form a ring; each R 22 is individually hydrocarbyl, oxygen or alkoxy, provided that when R 22 is oxygen, two of R 22 are taken together to form T=O; n is an integer of 1 or more; T is phosphorous or sulfur whose oxidation state is 3 or greater; x is equal to the oxidation state of T minus 2; M is Zr, Hf, Mn or Cr; m is an integer equal to the valence of M minus 2; and p is 0 or 1; and each L 3 is independently a monodentate monoanionic ligand, and L 4 is a monodentate neutral ligand or an empty coordination site, provided that an L 3 and L 4 taken together may be a monoanionic bidentate ligand.