Browsing by Author "Edor, J.M."
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Synthesis and characterization of (pyrazolylethylphosphinite)nickel(II) complexes and catalytic activity towards ethylene oligomerization(Applied Organometallic Chemistry, 2018-02) Edor, J.M.; Amenuvor, G.; Obuah, C.; Muller, A.; Darkwa, J.Compounds (2‐(3,5‐dimethyl‐1H‐pyrazol‐1‐yl)ethyldiphenylphosphinite (L1), 2‐(3,5‐di‐tert‐butyl‐1H‐pyrazol‐1‐yl)ethyldiphenylphosphinite (L2), and 2‐(3,5‐diphenyl‐1H‐pyrazol‐1‐yl)ethyldiphenylphosphinite (L3) were prepared using the synthetic routes reported in literature. These compounds were reacted with [NiCl2(DME)2] or [NiBr2(DME)2] under appropriate reaction conditions to afford six new nickel(II) compounds ([NiCl2(L1)] (1), [NiCl2(L2)] (2), [NiCl2(L3)] (3), [NiBr2(L1)] (4), [NiBr2(L2)] (5) and [NiBr2(L3)] (6)). The new nickel(II) pre‐catalysts catalyze the oligomerization of ethylene, in the presence of ethylaluminium dichloride as co‐catalyst, to produce butenes, hexenes, octenes and higher carbon chain ethylene oligomers with very little Friedel‐Crafts alkylation products when the reactions were run in toluene.Item Synthesis, characterization and coordination chemistry of (pyrazolylphosphinite)palladium(II) complexes(Inorganica Chimica Acta, 2018-02) Edor, J.M.; Amenuvor, G.; Obuah, C.; Muller, A.; Darkwa, J.Pyrazolylethylphosphinite compounds, L1 (2-(3,5-dimethyl-1H-pyrazol-1-yl)ethyldiphenlyphosphinite) and L2 (2-(3,5-di-tert-butyl-1H-pyrazol-yl)ethyldiphenylphosphinite) were reacted with the palladium(II) precursors [PdCl(CH3)(COD)] and [PdCl2(NCCH3)2] resulted in the formation of five novel complexes, produced from disproportionation reaction and have very interesting coordination chemistry. The results further emphasize the coordination versatility of pyrazolylphosphinite ligands towards palladium(II) metal centres.