Materials Data on ThU4O10 by Materials Project
U4ThO10 is Fluorite-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent U4+ sites. In the first U4+ site, U4+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are four shorter (2.34 Å) and four longer (2.37 Å) U–O bond lengths. In the second U4+ site, U4+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are four shorter (2.35 Å) and four longer (2.37 Å) U–O bond lengths. Th4+ is bonded in a body-centered cubic geometry to eight equivalent O2- atoms. All Th–O bond lengths are 2.40 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent U4+ and two equivalent Th4+ atoms to form a mixture of edge and corner-sharing OTh2U2 tetrahedra. In the second O2- site, O2- is bonded to four equivalent U4+ atoms to form a mixture of edge and corner-sharing OU4 tetrahedra. In the third O2- site, O2- is bonded to four U4+ atoms to form a mixture of edge and corner-sharing OU4 tetrahedra.