| 摘要 |
The invention relates to a dimeric late transition metal complex having the formula (1) wherein: Q, C and N form an unsaturated ring of aromatic nature; the divalent group Q is a chain of 3 or 4 atoms having the formula -[(CR)nZr]- wherein each R is independently selected from hydrogen, a halogen, a substituent comprising a heteroatom, and a C1-C30 hydrocarbyl, Z or each Z independently occurs at any place of the chain Q and is selected from -N=, -NR'-, R' being hydrogen or a C1-C10 hydro-carbyl, -S- and -O-, n is 2 or 3 and r is 0 or 1 when n+r is 3, and, n is 2, 3 or 4 and r is 0, 1 or 2 when n+r is 4; R10 is hydrogen, a halogen or a C1-C30 hydrocarbyl; R11 is hydrogen, a halogen or a C1-C30 hydrocarbyl; M is cobalt or nickel; X1 and X2 are independently selected from a monovalent ligand attached to M; A<-> is an anion and m is 0, 1 or 2, one of X1 and X2 optionally missing in the case m is 1 or 2, and the open lines from M and X1 are M-X1 and X1-M bonds, respectively, between the two mers of the dimer. |
