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Nickel (II)-Methyl Complexes with Water-Soluble Ligands L [(salicylaldiminato-k2N,O)NiMe(L)] and Their Catalytic Properties in Disperse Aqueous Systems

Nickel (II)-Methyl Complexes with Water-Soluble Ligands L [(salicylaldiminato-k2N,O)NiMe(L)] and Their Catalytic Properties in Disperse Aqueous Systems

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KORTHALS, Brigitte, Inigo GÖTTKER-SCHNETMANN, Stefan MECKING, 2007. Nickel (II)-Methyl Complexes with Water-Soluble Ligands L [(salicylaldiminato-k2N,O)NiMe(L)] and Their Catalytic Properties in Disperse Aqueous Systems. In: Organometallics. 26(6), pp. 1311-1316. ISSN 0276-7333. eISSN 1520-6041. Available under: doi: 10.1021/om0607191

@article{Korthals2007Nicke-9602, title={Nickel (II)-Methyl Complexes with Water-Soluble Ligands L [(salicylaldiminato-k2N,O)NiMe(L)] and Their Catalytic Properties in Disperse Aqueous Systems}, year={2007}, doi={10.1021/om0607191}, number={6}, volume={26}, issn={0276-7333}, journal={Organometallics}, pages={1311--1316}, author={Korthals, Brigitte and Göttker-Schnetmann, Inigo and Mecking, Stefan} }

Korthals, Brigitte Neutral (salicylaldiminato)nickel(II) methyl complexes [{6-C(H)= NAr-2,4-I2C6H2O-k2N,O}NiMe(L)](Ar = 2,6-{3,5-(F3C)2C6H3}2C6H3) with different water-soluble ligands L (2a, L = 1,3,5-triaza-7-phosphaadamantane; 2b, L = hexamethylenetetramine (urotropine); 2c, L = tetraethylammonium pyridine-3-sulfonate; 2d, L = amino-terminated poly(ethylene glycol) monomethoxy ether) were prepared. 2a-d are potentially water-soluble catalyst precursors for ethylene polymerization, which form a water-insoluble active site [{k2-N,O}NiR(ethylene)] (R = growing chain). Only complex 2d was found to be watersoluble(>2 mmol L-1); 2c is soluble in water/2-propanol mixtures. In toluene as a reaction medium, only the relatively weakly coordinated tertiary amine complex 2b is polymerization active (1.7 X 10000 TO). In aqueous systems 2c,d are also active due to compartmentalization of the active site in the polymer particles and of L in the aqueous phase. Polyethylene particle sizes vary from 18 nm (dispersions formed with 2d) to over 0.5 ím (2c) to suspensions (2b) depending on the initial state of the reaction mixture, correlated with catalyst solubility. Nickel (II)-Methyl Complexes with Water-Soluble Ligands L [(salicylaldiminato-k2N,O)NiMe(L)] and Their Catalytic Properties in Disperse Aqueous Systems deposit-license 2007 Mecking, Stefan eng Göttker-Schnetmann, Inigo Göttker-Schnetmann, Inigo application/pdf First publ. in: Organometallics ; 26 (2007), 6. - S. 1311-1316 Mecking, Stefan Korthals, Brigitte 2011-03-24T18:13:04Z

Dateiabrufe seit 01.10.2014 (Informationen über die Zugriffsstatistik)

Nickel.pdf 44
Suppoting_Inf_Nickel.pdf 58

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