Copper acetate monohydrate

Copper ) acetate monohydrate, molecular formula and uses, 7 1111 Copper acetylides, 1 179-180 Copper alloys. See also Wrought copper alloys... 

Hansen AE, Ballhausen CJ (1965) Electronic structure of copper acetate monohydrate based on a coupled chromophore model. Trans Far Soc 61 631... 

Several copper(II) compounds show exchange interactions between isolated pairs of Cu " ions, forming a lower singlet and a higher triplet state. Copper acetate monohydrate, Cu(CH3COO)2 HjO, is a well known example for this sort of behavior. The EPR results in such systems may be accounted for by the spin Hamiltonian... 

An amount of 1.8 g (8.0 mmol) of [N-(aminoethyl)aminopropyl] trimethoxysilane is slowly added to a suspension of 1.6 g (8.0 mmol) of copper acetate monohydrate in 50 mL of ethanol. The mixture is stirred at 22°C imtil the copper salt is completely dissolved (ca. 30 min). The color of the solution changes from blue to dark blue. Aqueous ammonia solution (0.2 N, 16.2 mL) is then added, corresponding to 7.5 M equiv of water per Si-OR group (incl. Si(OEt)4). The solution is stirred for 15 min at 22°C, and then 5.0 g (24 mmol) of tetraethoxysilane is added. Gelation occurs after about 8 h when the solution is refluxed at 70° C. Heating is continued for additional 64 h, followed by removal of all volatiles at 40 Torr. The obtained dark blue amorphous powder is dried at 70°C/0.1 Torr imtil weight constancy. Yield 4.25 g. 

Elmah, A. 2000. The magnetic super-exchange coupling in copper(II) acetate monohydrate and a redetermination of the crystal structure. Turkish Journal of Physics 24 667-672. 

Cupric acetate monohydrate Acetic acid, copper(2+) salt, monohydrate (8,9) (6046-93-1)... 

Ammonium acetate (99-)-%) and copper(ll) acetate monohydrate (98+%) were obtained from Aldrich Chemical Company, Inc. 

An aqueous solution (lOmL) of copper(II) acetate monohydrate (2.2mmol) was added to a methanolic solution (40mL) of H3L (1 mmol). The solution was allowed to stand for several hours at room temperature. The crude complex precipitated was collected by suction filtration and dried. Yield 90%. The complex was recrystallized from hot methanol-dimethylformamide (1 1) to give dark green crystals of formula [Cu2L(OCH3)]-DMF. Yield ca. 30%. 

The effect of additives in altering the catalyst environment has been studied by Wright and Weller (6). Chelation is known to alter the oxidation-reduction properties of ions and therefore could be expected to alter the activation of hydrogen. Ethylene diamine and ethylene diamine tetra-acetic acid inhibit both the rate and extent of reduction of quinone and cupric acetate monohydrate in quinoline solution at 100°. The production of metallic copper is related to the presence of organic material. 

It is of considerable interest that some 14 years after Calvin postulated these structures, van Niekerk and Schooling (8) showed by X-ray analysis that cupric acetate monohydrate, Cu(OAc)i.HjO, exists in the solid as dimeric molecules, the two copper ions being joined by four bridging acetate groups. The copper-copper distance in the dimer is only 2.64 A., as compared with 2.56 A. in the metal. 

A ligandless and base-free Gu-catalyzed protocol for the coupling of arylboronic acids and potassium aryltrifluoro-borates with primary and secondary aliphatic amines and anilines was developed. The process utilized catalytic copper(n) acetate monohydrate or CuCl2 and 4 AMS in dichloromethane at slightly elevated temperatures under an atmosphere of oxygen (Equation (232)).1019-1021... 

Bis[4-methylphenyl] Tellurium Dichloride4 7.75 g (25 mmol) of bis[4-methylphenyl] tellurium are dissolved in 100 m/ of acetone, and 20 ml of half concentrated hydrochloric acid followed by 10.0 g (50 mmol) of coppcr(II) acetate monohydrate are added. The mixture is stirred and heated under reflux. The vigorous reaction forms a voluminous white precipitate that dissolves on further heating. The crystalline copper(I) halide is removed by filtration, acetone is distilled from the filtrate, and 50 ml of benzene, 40 ml of water, and... 

Catalyst, alumina, 34, 79, 35, 73 ammonium acetate, 31, 25, 27 boron tnfluonde etherate, 38, 26 copper chromite, 31, 32, 36, 12 cupric acetate monohydrate, 38, 14 cuprous oxide silver oxide, 36, 36, 37 ferric nitrate, hydrated, 31, 53 phosphoric acid, 38, 25 piperidine, 31, 35 piperidine acetate, 31, 57 Raney nickel, 36, 21, 38, 22 sulfuric acid, 34, 26 Catechol, 33, 74 Cetylmalonic acid, 34, 16 Cetylmalonic ester, 34,13 Chlorination, by sulfuryl chloride, 33, 45, 37, 8... 

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