Hexanitrato complexes and hybrid double perovskites of Am3+ and Cm3+

Abstract

The synthesis and structures of the homoleptic hexanitrato complexes of Am(III) and Cm(III), [(CH₃)₄N]₂KAn(NO₃)₆ are reported. These compounds form a double perovskite structure type, A₂B′BX₆, crystallizing in the cubic space group Fmm. Their electronic properties, as calculated using the Quantum Theory of Atoms in Molecules, are reported and compared to their lanthanide homologues Eu(III) and Gd(III).