Simple Preparation of Halogen-Substituted <i>α</i>-Diimine Nickel Complexes Immobilized into Clay Interlayer as Catalysts for Ethylene Oligo-/Polymerization
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چکیده
منابع مشابه
Symmetric and Asymmetric Binuclear α-Diimine Nickel(II) Complexes for Ethylene Polymerization
A series of symmetric and asymmetric binuclear α-diimine nickel(II) complexes toward ethylene polymerization were successfully synthesized and characterized by 1HNMR. All the catalysts were typically activated with MAO and displayed good activity at room temperature under 1atm ethylene pressure. The symmetric catalyst containing isopropyl on l...
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A series of dissymmetric dinuclear complexes were synthesized, as dual site catalysts in ethylene polymerization, by coupling the allylated a-diimine complexes of the metals Ti, Zr, V, Ni and Pd with the ansa-zirconocene complex [C5H4-SiH(Me)-C5H4]ZrCl2 possessing a hydride silane moiety. The different stages of syntheses included the formation of bis(cyclopentadienide)methyl silane which was u...
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A range of Zr(IV) and Hf(IV) complexes of arene-substituted cyclopentadienyl ligands have been prepared and tested in ethylene oligomerisation. The complexes prepared were designed to be precatalysts to active species which have been predicted, through theoretical studies, to lead to selective ethylene trimerisation. While there is evidence for selective 1-hexene formation in the liquid fractio...
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The previously unknown methallylnickel 2-diorganophosphanylphenolates (R=Ph, cHex) were synthesized and found to catalyze the polymerization of ethylene. To explore the potential for ligand-tuning, a variety of P-alkyl- and P-phenyl-2-phosphanylphenols was synthesized and allowed to react with [Ni(cod)(2)] (cod=1,5-cyclooctadiene) or with NiBr(2).DME and NaH. The complexes formed in situ with [...
متن کاملdissymmetric dinuclear transition metal complexes as dual site catalysts for the polymerization of ethylene
a series of dissymmetric dinuclear complexes were synthesized, as dual site catalysts in ethylene polymerization,by coupling the allylated a-diimine complexes of the metals ti, zr, v, ni and pd with the ansa-zirconocenecomplex [c5h4-sih(me)-c5h4]zrcl2 possessing a hydride silane moiety. the different stages of syntheses includedthe formation of bis(cyclopentadienide)methyl silane which was util...
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ژورنال
عنوان ژورنال: Modern Research in Catalysis
سال: 2017
ISSN: 2168-4480,2168-4499
DOI: 10.4236/mrc.2017.62008