Synthesis and Structure of UO₂I₂(OH₂)₂·4Et₂O: First Structurally Characterized U(VI)−I Bond and Lightest Missing Member of the UO₂X₂ (X = Halide) Series

UO2I2(OH2)2·4Et2O has been synthesized and structurally characterized using X-ray diffraction. This thermally unstable species is the lightest missing member of the dioxouranium dihalide (UO2X2, X = F, Cl, Br, I)-containing series to be structurally characterized and is, to our knowledge, the first structurally characterized compound containing a U(VI)−I bond.