Copper(II) trifluoroacetate is the
trifluoroacetate of divalent
copper with the chemical formula Cu(CF3COO)2. It exists as the anhydride, hydrate and adducts of other solvents. The hydrate begins to lose two waters of crystallisation at 108 °C, and loses all crystal water at 173 °C to form the anhydrous form. This begins to decompose at 220 °C.[6]
Preparation
Copper trifluoroacetate can be obtained by reacting
trifluoroacetic acid with
copper oxide,
copper hydroxide or basic
copper carbonate. Acetone can replace the water molecules in copper trifluoroacetate hydrate, and under reduced pressure conditions, the acetone can be removed to obtain anhydrous material.[1]
Coordination complexes
The copper atoms of copper trifluoroacetate can be coupled with
ammonia molecules or
water molecules, and can also form adducts with some organic molecules, such as [Cu(H2O)3(OOC-CF3)2]·2
C4H8O2.[7]
References
^
abCotton FA , Dikarev EV , Petrukhina MA. Syntheses and crystal structures of "unligated" copper(I) and copper(II) trifluoroacetates. Inorganic Chemistry, 2000. 39(26):6072-6079. DOI: 10.1021/ic000663h
^Elena V. Karpova, Alexander I. Boltalin, Maxim A. Zakharov, et al. Synthesis and Crystal Structure of Copper(II) Trifluoroacetates, Cu2(CF3COO)4 · 2 CH3CN and Cu(CF3COO)2(H2O)4. ZAAC, 1998. 624(4): 741-744
^MJ Baillie, DH Brown, KC Moss. Anhydrous metal trifluoroacetates. Journal of the Chemical Society A Inorganic Physical Theoretical, 1968: 3110-3114. DOI: 10.1039/j19680003110