A continuing legend: the Brookhart-type α-diimine nickel and palladium catalysts
نویسندگان
چکیده
منابع مشابه
Synthesis and application of binuclear α-diimine nickel/palladium catalysts with a conjugated backbone.
A series of binuclear nickel/palladium catalysts C4-C7 with conjugated α-diimine ligands were designed, prepared and fully characterized. The binuclear nickel complexes C6 and C7 were activated by modified methylalumoxanes (MMAO) to generate highly active ethylene polymerization catalysts with activities up to 1050 kg [mol (Ni) h](-1). The activity of C7 is twice that of the mononuclear analogu...
متن کاملImportance of co-donor field strength in the preparation of tetradentate α-diimine nickel hydrosilylation catalysts.
Although bis(α-diimine)Ni complexes were prepared when amine-substituted chelates were added to Ni(COD)2, the incorporation of strong-field phosphine donors allowed the isolation of (κ(4)-N,N,P,P-DI)Ni hydrosilylation catalysts. The crystallographic investigation of two different (κ(4)-N,N,P,P-DI)Ni compounds revealed that the geometry about nickel influences the observed degree of α-diimine re...
متن کاملthe investigation of the relationship between type a and type b personalities and quality of translation
چکیده ندارد.
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...
متن کاملDirect Synthesis of Branched Carboxylic Acid Functionalized Poly(1-octene) by -Diimine Palladium Catalysts
In this work, we studied propylene polymerization using some α-diimine palladium catalysts with systematically varied ligand sterics. In propylene polymerization, the ligand steric effect exhibits significant variations on the catalytic activity, polymer molecular weight, and branching density. However, the regio control for the polymer microstructure is poor. Furthermore, copolymerization of 1...
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ژورنال
عنوان ژورنال: Polymer Chemistry
سال: 2019
ISSN: 1759-9954,1759-9962
DOI: 10.1039/c9py00226j