67486-01-5Relevant academic research and scientific papers
Reductively induced homolytic carbon-carbon bond cleavage in Co(CO)3(PPh3)(COCF3)
Gunawardhana, Nanda,Gipson, Stephen L.
, p. 3231 - 3235 (2007)
The chemical or electrochemical reduction of the trifluoroacetyl complex Co(CO)3(PPh3)(COCF3) involves a single electron transfer yielding trifluoromethyl radical and an anionic cobalt carbonyl complex. The mechanism is proposed to involve electron transfer followed by initial dissociation of either a carbonyl or phosphine ligand from the 19-electron [Co(CO)3(PPh3)(COCF3)]- anion. The resulting 17-electron intermediate undergoes subsequent one-electron reductive elimination of trifluoromethyl radical by homolytic cleavage of the carbon-carbon bond of the trifluoroacetyl group. The CF3{radical dot} radical can be trapped by either benzophenone anion, forming the anion of α-(trifluoromethyl)benzhydrol, or Bu3SnH, yielding CF3H. The ultimate organometallic product is an 18-electron anion, either [Co(CO)4]- or [Co(CO)3(PPh3)]-, depending upon which ligand is initially lost. Fluorine-containing products were identified and quantitated by 19F NMR while cobalt-containing products were determined by IR.
Synthetic and Structural Studies on Organotransition Metal-Gallium Complexes
Campbell, Rachel M.,Clarkson, Lucy M.,Clegg, William,Hockless, David C. R.,Pickett, Nigel L.,Norman, Nicholas C.
, p. 55 - 60 (2007/10/02)
The transition metal-gallium complexes (where MLn = Fe(CO)2(η-C5H5), Mo(CO)3(η-C5H5), Co(CO)3(PPh3), and Mn(CO)5> have been synthesised by salt elimination between GaCl3 and MI(MLn) (MI = Na/K).The iron complex 3> (1) has been characterised by X-ray crystallography and shown to contain a planar, three-coordinate gallium centre bound to three Fe(CO)2(η-C5H5) fragments by unsupported Ga-Fe bonds .A partial structure determination of 3> (5) is consistent with a trigonal-planar GaMo3 core.Brief mention is also made of two chloro complexes . Key Words: Gallium-transition metal complexes / Iron complexes / Manganese complexes / Molybdenum complexes
