Synthesis, characterisation and catalytic activity of Pd(II) and Ni(II) complexes with new cyclic α-diphenylphosphino-ketoimines. Crystal structure of 2,6-diisopropyl-N-(2-diphenylphosphino-cyclopentylidene)aniline and of 2,6-diisopropyl-N-(2-diphenylphosphino-cyclohexylidene)aniline

2-Oxazoline/benzoxazole-1,10-phenanthrolinylmetal (iron, cobalt or nickel) dichloride: Synthesis, characterization and their catalytic reactivity for the ethylene oligomerization

“…In the past decade, late-transition metal complexes in olefin reactivity have been greatly attracted because of the initial works of cationic a-diimino nickel and palladium complexes by Brookhart group [10] and bis(imino)pyridinyl iron and cobalt complexes by Brookhart [11] and Gibson groups [12], individually. Inspired with SHOP process for ethylene oligomerization [4][5][6][7][8][9], bidentate nickel dihalides bearing P^P [13][14][15], N^O [16][17][18][19][20][21], P^N [22][23][24][25][26][27], N^N [28][29][30][31][32][33][34][35][36][37] and organonickel complexes [38,39] have been widely studied for ethylene reactivities. Encouraged by the finding of bis(imino)pyridyl iron and cobalt complexes as highly active catalysts in ethylene reactivity [11,12], special efforts have been paid to devise new tridentate ligands such as O^N^N [40], N^P^N [41], P^N^N [42,43], and N^N^N [44][45]…”

Novel neutral arylnickel(II) phosphine catalysts containing 2-oxazolinylphenolato N–O chelate ligands for ethylene oligomerization and propylene dimerization

“…As explained above, Scheme 2 illustrates that ethylene concentration affects not only on the steps of ethylene insertion and chain propagation (Path A) but also on the step of chain transfer (Path C) [50]. Therefore, in principle, higher ethylene pressure improves the catalytic activities and the content of C 6 fraction.…”

New Chiral P-N Ligands for the Regio- and Stereoselective Pd-Catalyzed Dimerization of Styrene

“…In the field of ethylene homo-and co-, oligo-and polymerization Ni(II) complexes with a variety of P-N ligands were preferentially used [12][13][14][15][16][17]. Palladium complexes containing P-N ligands were applied as precatalysts for CO/alkene copolymerization; very high CO pressures (up to 320 bar) were required to have catalytic activity [17][18][19][20].…”