PROGRESS OF NICKEL COMPLEXES AS CATALYSTS FOR ETHYLENE OLIGOMERIZATION/POLYMERIZATION
نویسندگان
چکیده
منابع مشابه
Dissymmetric 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-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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Phosphinito-imines, a new class of P,N donors, are readily generated by reaction of bulky arylamide anions [RCONAr] (R = Me or t-Bu; Ar = 2,6-i-Pr2C6H4) with chlorophosphines ClP(R)2. In solution, free phosphinito-imines exist in equilibrium with the corresponding amidophosphine tautomers, containing a nitrogen-bound P(R)2 group. However, reacting the tautomer mixtures with metal precursor comp...
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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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 کاملSymmetric 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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ژورنال
عنوان ژورنال: Acta Polymerica Sinica
سال: 2009
ISSN: 1000-3304
DOI: 10.3724/sp.j.1105.2009.00600