New hexafluoroacetyalacetonato- (hfacac) and trifluoroacetato olefin complexes of copper(I) of the general formula Cu(hfacac)(olefin) and Cu(CF3CO2)(olefin) have been prepared from Cu2O / hfacacH / olefin or Cu(CF3CO2)(toluene)0.5 / olefin systems. The structures of [Cu(hfacac)(coe)], [Cu(hfacac)(van)], [Cu(μ-CF3COO)(tbve)]n and [Cu(μ-CF3COO)(van)]2•C7H8, have been determined by X-ray diffraction methods, where coe = cyclooctene , van = 4-vinylanisole and tbve = t-butylvinylether. In the solid state, the 4-vinylanisole / trifluoroacetate complex, [Cu(CF3COO)(van)]2, is dimeric with two carboxylato groups symmetrically bridging two copper atoms, while the t-butylvinylether derivative, [Cu(μ-CF3COO)(tbve)]n, is polymeric with single [CF3COO]− bridges between adjacent copper atoms. Olefin hfacac complexes are monomeric and considering the two oxygen atoms and the midpoint of the double bond of the coordinated olefin, the copper atom lies in a nearly trigonal...
Synthesis, Characterization and Olefin/CO Exchange Reactions of Copper(I) Derivatives Containing Bidentate Oxygen Ligands
PAMPALONI, GUIDO;
2005-01-01
Abstract
New hexafluoroacetyalacetonato- (hfacac) and trifluoroacetato olefin complexes of copper(I) of the general formula Cu(hfacac)(olefin) and Cu(CF3CO2)(olefin) have been prepared from Cu2O / hfacacH / olefin or Cu(CF3CO2)(toluene)0.5 / olefin systems. The structures of [Cu(hfacac)(coe)], [Cu(hfacac)(van)], [Cu(μ-CF3COO)(tbve)]n and [Cu(μ-CF3COO)(van)]2•C7H8, have been determined by X-ray diffraction methods, where coe = cyclooctene , van = 4-vinylanisole and tbve = t-butylvinylether. In the solid state, the 4-vinylanisole / trifluoroacetate complex, [Cu(CF3COO)(van)]2, is dimeric with two carboxylato groups symmetrically bridging two copper atoms, while the t-butylvinylether derivative, [Cu(μ-CF3COO)(tbve)]n, is polymeric with single [CF3COO]− bridges between adjacent copper atoms. Olefin hfacac complexes are monomeric and considering the two oxygen atoms and the midpoint of the double bond of the coordinated olefin, the copper atom lies in a nearly trigonal...I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
