Anhydrous metal trifluoroacetates

Anhydrous chromium(III), manganese(II), iron(III), cobalt(II), nickel(II), copper(II), and zinc(II) trifluoroacetates have been prepared from solutions in nitromethane resulting from metathesis between the appropriate metal chloride and silver trifluoroacetate. The electronic spectra and magnetic susceptibilities suggest that the metal atoms are in octahedral co-ordination. The i.r. spectra of these and potassium, caesium, and silver trifluoroacetates have been recorded and assignments made for all observed bands. The effect of heat on the metal trifluoroacetates has been studied and the solubilities in diethyl ether and benzene have been examined.