Synthesis of New Silicon-linked Lanthanocene Complexes and Their High Catalytic Activity for Methyl Methacrylate Polymerization with Nanometric Sodium Hydride as Co-catalyst-中国期刊网

摘要 Thesynthesisandcharacterizationoffournewsilicon-linkedlanthanocenecomplexeswithpendantphenylgroupsoncyclopentadienewerereported.Basedonthedataofelementalanalyses,MSandIR,thecomplexeswerepresumedtobeunsolvatedanddimericcomplexes[Me2Si(C5H3CMe2C6H5)2LnC1]2[Ln=Er(1),Gd(2),Sm(3),Dy(4)].InconjunctionwithAlEt3orsodiumhydrideastheco-catalyst,thesecomplexescouldefficientlycatalyzethepolymerizationofmethylmethacrylate(MMA).Whenthenanometricsodiumhydridewasusedasaco-catalyst,thecomplexeswerehighlyeffectiveforthepolymerizationofMMA.Atlowtemperatureandinshorttime,in[MeESi(C5H3CMe2C6H5)2LnC1]2/NaH(nanometric)system,thepolymerwasobtainedinmorethan80%yieldandthemolecularweightwasgreaterthan105.Theactivityreachedthatoforganolanthanidehydrideasasingle-componentcatalyst.In]MeESi(C5H3CMe2C6H5)2ErC1]2/Nail(nanometric)system,theeffectsofthemolarratioofMMA/catalystandcatalyst/co-catalyst,andthetemperatureonpolymerizationwerestudied.

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Synthesis of New Silicon-linked Lanthanocene Complexes and Their High Catalytic Activity for Methyl Methacrylate Polymerization with Nanometric Sodium Hydride as Co-catalyst

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Synthesis of New Silicon-linked Lanthanocene Complexes and Their High Catalytic Activity for Methyl Methacrylate Polymerization with Nanometric Sodium Hydride as Co-catalyst

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