Plutonium(IV) Cluster with a Hexanuclear [Pu₆(OH)₄O₄]¹²⁺ Core

A mixed hydroxo/oxo plutonium­(IV) carboxylate resulting from the hydrolysis and condensation of PuIV in an acidic aqueous solution has been isolated. The structure of Li6[Pu6(OH)4O4(H2O)6(HGly)12]­Cl18·10.5H2O (1) consists of a cationic [Pu6(OH)4O4]12+ core that is decorated by glycine ligands. The synthesis, structure, and characterization of the hexanuclear unit, which represents the first example of a PuIV polynuclear complex containing both hydroxo- and oxo-bridging ligands, are described herein.