Neptunium and plutonium complexes with a sterically encumbered triamidoamine (TREN) scaffold

Abstract

The syntheses and characterisation of isostructural neptunium(IV) and plutonium(IV) complexes [An^IV(TREN^TIPS)(Cl)] [An = Np, Pu; TREN^TIPS = {N(CH₂CH₂NSiPrⁱ₃)₃}³⁻] are reported, along with the demonstration that they are likely reduced to the corresponding neptunium(III) and plutonium(III) products [An^III(TREN^TIPS)]; this chemistry provides new platforms from which to target a plethora of unprecedented molecular functionalities in transuranic chemistry and the neptunium(IV) molecule is the first structurally characterised neptunium(IV)–amide complex.