| 主权项 |
1. A complex of formula (I)wherein:
N1 and N2 are nitrogen atoms; A1 is C1-4 alkylene, optionally as part of a five or six-membered ring, or ortho-benzylene optionally as part of a six-membered ring, each of which may be optionally substituted by one or more of C1-C20 alkyl, C1-C6 alkoxy, halogen, or amine, wherein the five or six membered ring optionally comprises one or more heteroatom; each R1 and R2 is independently C1-C8 alkyl, C2-C8 alkenyl, C1-C8 alkoxy, aryloxy, C3-C8 cycloalkyl, aryl or heteroaryl, all of which may be optionally substituted, preferably aryl such as phenyl, para-tolyl and meta-xylyl, or both R1 substituents combine to form an optionally substituted C2-C4 linear or C3-C8 branched alkylene, or form a ring together with the phosphorus atom to which they are attached, and/or both R2 substituents combine to form an optionally substituted C2-C4 linear or C3-C8 branched alkylene, or form a ring together with the phosphorus atom to which they are attached; R3 is H or absent; R4, R5 and R8 are each independently H, or C1-C8 alkyl, C2-C8 alkenyl, aryl, or cycloalkyl, each of which may be optionally substituted; R4′ is H or absent; R6 is H or absent; R7, R9 and R10 are each independently H, or C1-C8 alkyl, C2-C8 alkenyl, aryl, or cycloalkyl, each of which may be optionally substituted, or R7 and R9 together with the carbon atoms to which they are attached form an optionally substituted C5-8 cycloalkyl ring, or R9 and R10 together with the carbon atom to which they are attached form a carbonyl group; L1 is CO, CNR, CN−, N-heterocyclic carbene or NO, wherein R is C1-C8 alkyl, linear or branched, for example n-Bu or tert-Bu, optionally substituted with vinyl or triethoxysilane, or aryl such as phenyl, tolyl, 4-vinylphenyl, 4-alkylphenyl, all of which may be optionally substituted with vinyl, triethoxysilane or phosphinate; L2 is absent or is hydride, optionally substituted pyridine, N-methylacetamide, N-methylformamide, optionally substituted imidazole, halide, or RaOH, NCRa or −ORa, wherein Ra is aryl, heteroaryl, C1-C8 alkyl, C2-C8 alkenyl or C3-C8 cycloalkyl, all of which may be optionally substituted, or Rb3N wherein each Rb is independently H, methyl or ethyl, or Rc(CO)Rc wherein each Rc is independently C1-C8 alkyl, aryl, or heteroaryl; and n is 0, +1, or +2, wherein when n is +1 or +2, the complex further comprises at least one non-coordinating anion Y, wherein the total charge of all non-coordinating anions in the complex is equal to —n. |
