Americium chloro-complexes

Americium(III) tetrachloro- and hexachloro-complexes, CsAmCl4(hydrated and anhydrous), Cs2NaAmCl6, and Cs3AmCl6 have been prepared. Their infrared spectra and some X-ray powder results are reported; the analyses of these compounds, and of the americium(V) chloro-complex, Cs3AmO2Cl4, are consistent with the new value (433 years) for the half-life of 241Am.