Synthesis and Structure of a Discrete Hexanuclear Uranium–Phosphate Complex

The first high-nuclearity uranium complex contains an octahedral array of metal centers that is coordinated by twelve diphenylphosphate as well as eight oxo or hydroxo ligands. Although the degree of protonation of the capping centers could not be determined unambiguously, many of the findings point to OH ligands. The picture on the right shows the U6O8 framework of the complex.