66809-30-1Relevant academic research and scientific papers
Isolation and methylation of aroylnickel intermediates derived by carbonylation of trans-aryl(pentachlorophenyl)bis(phenyldimethylphosphine)nickel(II) compounds
Wada, Masanori,Asada, Naonori,Oguro, Keisuke
, p. 2353 - 2357 (1978)
From the reaction of trans-C6Cl5Ni(PPhMe2)2C 6H4X-p (1) with carbon monoxide, three aroylnickel(II) complexes, trans-C6Cl5Ni(PPhMe2)2C(O)C 6H4X-p (2) (X = a, N(CH3)2; b, OCH3; c, CH3), were isolated. These complexes, 2, react further with carbon monoxide to give C6Cl5C(O)C6H4X-p (3) but thermally decompose to give C6Cl5C6H4X-p (5). Methylation by methyl fluorosulfonate occurred at the aroyl oxygen atom of 2 to give cationic aryl(methoxy)carbenenickel(II) complexes, trans-[C6Cl5Ni(PPhMe2)2 {C(OCH3)C6H4X-p}]+ (4). The IR, 1H NMR, and electronic spectra of 2 were explained with the contribution of resonance forms having an anionic charge on the aroyl oxygen atom. The carbene complexes, 4, are stable thermally, and their 1H NMR spectra showed a perpendicular relationship between the plane of the carbene ligand and the nickel coordination plane.
