Copper I Acetate Formula

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copper i acetate formula is an essential solvent and precursor for chemicals used in paint, adhesives and food additives. Currently, it is manufactured using acetic acid from syngas which results in 1.6kg CO2-equivalent emissions per kilogram of acetate. Researchers have found a way to significantly reduce the amount of CO emitted in this process by adding copper.

The crystal structure of copper i acetate is that of a bridged binuclear dimeric complex, Cu2(CH3COO)2 (see the picture above). In aqueous solutions this form is unstable and the dimers dissociate rapidly. The magnetic properties of this compound are also interesting since the bridged dimers exhibit strong antiferromagnetic coupling.

We studied the solid state epr spectra of the different forms of this compound in an attempt to identify the structure underlying this effect. The frozen solution epr spectrum of the monomer, Cu2(CH3COO)2, shows that it has a single copper-to-copper exchange interaction. This is in contrast with the trimeric dimers which have two copper-to-copper and one copper-to-oxygen exchange interaction.

The acetate hydrates are stabilized in aqueous ammonia solutions by strongly bound Cu2+ ions in distorted octahedral environments with oxygen atoms located in the axial positions and acetate groups in the equatorial plane. The concentration of ammonia determines the ordering of these Cu2+ ions. At high ammonia concentrations disordered Cu tetra-ammoniate associates with the dx2-y2dx2-y2 ground state are formed, whereas in low ammonia concentrations bulky Cu2+ ion association structures are formed which possess the dx2-y2dx2-y2dx2-y2 octahedral geometry and a long Cu-0 bond in the dz-position.