Vibrational spectroscopy of strontium uranate(VI) compounds

Abstract

The precise nature of strontium uranium oxides has implications for the current understanding of oxygen redistribution after fission. Six strontium uranate(VI) compounds, Sr₃UO₆, Sr₂UO₅, β-SrUO₄, Sr₂U₃O₁₁, SrU₄O_12.8, and SrUO_3.67 have been studied using i.r. spectroscopy and X-ray powder dyffraction. Raman spectra have also been obtained for Sr₃UO₆, Sr₂UO₅, β-SrUO₄ and Sr₂U₃O₁₁. The spectra are presented and discussed and the primary uranium–oxygen bond lengths have been calculated for β-SrUO₄, Sr₂U₃O₁₁, and SrU₄O_12.8.