Molecular species formed by the reaction of copper(I) trifluoroacetate with alkenes and benzene in the solid and liquid state

Weakly Coordinating Anions HA2-Generated from Oxoanions A-and Their Conjugate Acids. Coordination Equilibria, Ionic Conductivities, and the Structures of {Cu2(H(CH3SO3)2)4}nand [Cu(CO)(H(CF3CO2)2)]2

“…First, Cu(CF 3 CO 2 ) is dimeric in the gas phase, with the two bridging carboxylates forming a planar eight-membered ring . Second, Cu(CF 3 CO 2 ) was reported to form oligomers up to tetramers in benzene solution . Finally, the related copper(I) carboxylates Cu(CH 3 CO 2 ) and Cu(C 6 H 5 CO 2 ) were shown to be dimeric and tetrametric in the solid state, respectively.…”

“…39 Second, Cu(CF 3 CO 2 ) was reported to form oligomers up to tetramers in benzene solution. 40 Finally, the related copper(I) carboxylates Cu(CH 3 CO 2 ) 41 and Cu(C 6 H 5 -CO 2 ) 42 were shown to be dimeric and tetrametric in the solid state, respectively. In the case of [Cu(CH 3 CO 2 )] 2 , the dimeric molecules, with two Cu-O bonds per Cu + ions, are linked by longer, intermolecular Cu-O bonds, so that the CuO 3 coordina- (not shown) demonstrated that 2134 cm -1 is the final band position, which we assign to the structurally characterized compound [Cu(CO)(H(CF 3 CO 2 ) 2 ] 2 .…”

Insulinomimetic Zinc(II) Complexes with Natural Products: In Vitro Evaluation and Blood Glucose Lowering Effect in KK-Ay Mice with Type 2 Diabetes Mellitus

“…(Ϯ)Epinephrine hydrochloride, collagenase, and bovine serum albumin (BSA) were purchased from Sigma Chemi- Molecular Weight Measurements Molecular weights of Zn(bet) 3 -(ClO 4 ) 2 , Zn(lac) 2 , and [Zn(qui) 2 ] n in aqueous solution were determined by using a vapor pressure osmometer, according to the method described previously. 20,21) Urea was used as a standard compound to calibrate the apparatus. A complex, Zn(bet) 3 (ClO 4 ) 2 , was reprecipitated from water/ethanol before use.…”

Characterization of metal complexes formed by interaction of allyl alcohol and copper(I) in aqueous solution

“…The mixture containing copper(II) (1.0 X 3 M) and allyl alcohol (0.5 M) was stirred vigorously in a reproducible manner and a weighed amount of acid-washed copper granules added to the reaction mixture. The reaction was allowed to proceed in a nitrogen atmosphere and 1-mL aliquots of the reaction mixture were withdrawn periodically and analyzed for copper® and copper(II) as described previously (2). The variation of the rate of formation of copper® in solution with varying initial concentrations of copper(II), allyl alcohol, and hydrogen ion was investigated.…”

“…The driving force for this reaction is the formation of copper(I)-allyl alcohol complexes, and as expected, the addition of copper metal to the aqueous solution resulted in a dramatic decrease in the allyl alcohohwater peak height ratio, RP. If the same RP value is obtained for two solutions, one containing allyl alcohol, cop-per®), and copper metal and the other containing allyl alcohol and copper®) only, it has been assumed that the free allyl alcohol concentrations in both solutions are identical (2). Hence, the free allyl alcohol concentration in solution could be obtained by the use of eq 1 and 2 and the measured RP value of the reaction mixture.…”