| 摘要 |
<p>A complex suitable for the polymerisation of 1-olefins is disclosed, having formula (A) wherein M is a transition metal, lanthanide or actinide; X represents an atom or group covalently or ionically bonded to the transition metal M; b is the valency of the atom or group X; Z1 is N or P; Z2 is N, P, N?-, P- or NR5; Z3¿ is one of N, P, O, S, NHR?3, NR3R4¿, OH, OR3, SH, SR?3, PHR3, PR3R4, (NR3)-, O-, S-, (PR3)-, P(R3R4)O, NR3 or PR3¿, subject to the proviso that one of Z?2 and Z3¿ is anionic; T is the oxidation state of the transition metal M when both Z?2 and Z3¿ are neutral, and (1) less than the oxidation state of M when one of Z2 or Z3 is anionic; A and B are independently hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, and may together with Z2 form part of a heterocyclic substituent; B may be joined to Z3 by either a single or a double bond; R1 to R5 are each independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted hetrohydrocarbyl, and any two or more of R1 to R5 when hydrocarbyl may be joined together to form a ring; L is a solvate molecule, and n is from 0 to 5.</p> |
