Copper(I) Acetate

[598-54-9] C2H3CuO2 (MW 122.58) InChI = 1S/C2H4O2.Cu/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1 InChIKey = RFKZUAOAYVHBOY-UHFFFAOYSA-M (acetoxylation;4 oxidation of phenols;6 hydrogenation3) Alternate Name: cuprous acetate. Physical Data: dec 285 °C. Solubility: sol water (hydrolyzes to form Cu2O), pyridine, HOAc; dissolves slowly in ether. Form Supplied in: tan or white powder; commercially available. Preparative Methods: obtained as a sublimate by heating copper(II) acetate in vacuo to temperatures above 220 °C.2 Prepared from Copper(I) Oxide and Acetic Acid–Acetic Anhydride;3 also, from a reaction involving Copper(II) Acetate and Copper foil in anhydrous acetonitrile with acetic acid–acetic anhydride. The mixture is stirred under nitrogen for 48 h after excess copper is removed, and precipitation of copper(I) acetate in ether occurs.4, 5 Obtained by slow addition of a solution of hydroxylamine hydrogen sulfate to a hot mixture of ammoniacal copper(II) acetate solution buffered with a large amount of ammonium acetate; addition of excess acetic acid precipitates the copper(I) acetate.1 Handling, Storage, and Precautions: stable when dry, but decomposes with moisture or strong heating.