On March 12, 2007, Korthals, Brigitte; Goettker-Schnetmann, Inigo; Mecking, Stefan published an article.Quality Control of Pyridine-3-sulfonic acid The title of the article was Nickel(II)-Methyl Complexes with Water-Soluble Ligands L [(salicylaldiminato-κ2N,O)NiMe(L)] and Their Catalytic Properties in Disperse Aqueous Systems. And the article contained the following:
Neutral (salicylaldiminato)nickel(II) Me complexes [{6-C(H):NAr-2,4-I2C6H2O-κ2N,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 [{κ2-N,O}NiR(ethylene)] (R = growing chain). Only complex 2d was water-soluble (>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 × 104 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 μm (2c) to suspensions (2b) depending on the initial state of the reaction mixture, correlated with catalyst solubility The experimental process involved the reaction of Pyridine-3-sulfonic acid(cas: 636-73-7).Quality Control of Pyridine-3-sulfonic acid
The Article related to salicylaldiminato nickel methyl water soluble ligand complex preparation catalyst, polymerization catalyst salicylaldiminato nickel methyl water soluble ligand complex, Organometallic and Organometalloidal Compounds: Group Viii – Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and other aspects.Quality Control of Pyridine-3-sulfonic acid