41742-64-7Relevant academic research and scientific papers
Lithium cyanocuprates: Structural studies of a phosphane adduct of a lower-order lithium cyanocuprate
Davies, Robert P.,Hornauer, Stefan
, p. 51 - 54 (2005)
Addition of PPh3 to the lower-order cyanocuprate PhCuCNLi results in a significant increase in reactivity in 1,4-Michael addition reactions. This is explained by a marked structural change in the cyanocuprate reagent, observed in both THF solution and the solid state, to give [Ph 2Cu]- cuprate anions and a [Cu2Li 4(CN)4(PPh3)4-(THF) 10]2+ dication. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005.
Association and dissociation of lithium cyanocuprates in ethereal solvents
Putau, Aliaksei,Koszinowski, Konrad
, p. 4771 - 4778 (2011)
We use a combination of electrospray ionization mass spectrometry and electrical conductivity measurements to probe the ions present in ethereal solutions of lithium cyanocuprates. Electrospray ionization mass spectrometry shows that solutions of LiCuRsu
Reactions of organocopper reagents with the cationic bridging acylium complex [C5H5(CO)Fe]2(μ-CO)(μ-CHCO)+
Casey, Charles P.,Crocker, Mark,Vosejpka, Paul C.,Rheingold, Arnold L.
, p. 278 - 282 (2008/10/08)
The bridging acylium complex [C5H5(CO)Fe]2(μ-CO)(μ-CHCO) +PF6- (2) reacted with organocuprates Li(RCuCN) at the acylium carbon to give the acyl-substituted μ-alkylidene complexes [C5H5(CO)Fe]2(μ-CO)(μ-CHCOR) (6, R = CH3; 7, R = (CH2)3CH3; 8, R = C6H5). The acyl groups of complexes 6-8 display low carbonyl stretching frequencies indicative of strong electron donation from the Fe2(μ-C) core onto the acyl substituents. The molecular structure of 8, determined by X-ray crystallography, supports these observations. Crystals of 8 are triclinic, space group P1, with a = 7.008 (2) A?, b = 12.392 (3) A?, c = 12.441 (3) A?, α = 118.37(2)°, β = 91.09 (2)°, γ = 103.42 (2)°, and Z = 2. 6 reacted with CF3SO3CH3 to give the O-methylated complex [C5H5(CO)Fe]2(μ-CO)[μ-CHC(CH 3)OCH3]+CF3SO3 - (12) resulting from methylation of the acetyl group of 6 at oxygen. Reaction of 2 with Li2[(CH3)2CuCN] afforded the μ-alkenylidene complex [C5H5(CO)Fe]2(μ-CO)[μ-C=(CH 3)2] (13) via double nucleophilic addition. 13 reacted with Me3O+BF4- to give the μ-alkylidyne complex [C5H5(CO)Fe]2(μ-CO)[μ-CC(CH 3)3]+BF4- (14).
