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.

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] Copper trifluoroacetate forms adducts with a variety of Lewis bases, such as ammonia, water, dioxane,[7] and quinoline.

[8] The Lewis bases bind to the axial positions.