Materials Data on Ce3Th4O14 by Materials Project

Abstract

Th4Ce3O14 is Fluorite-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Th4+ sites. In the first Th4+ site, Th4+ is bonded in a body-centered cubic geometry to eight O2- atoms. All Th–O bond lengths are 2.42 Å. In the second Th4+ site, Th4+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.41 Å) and six longer (2.42 Å) Th–O bond lengths. There are two inequivalent Ce4+ sites. In the first Ce4+ site, Ce4+ is bonded in a body-centered cubic geometry to eight O2- atoms. All Ce–O bond lengths are 2.39 Å. In the second Ce4+ site, Ce4+ is bonded in a body-centered cubic geometry to eight O2- atoms. All Ce–O bond lengths are 2.39 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded to three Th4+ and one Ce4+ atom to form a mixture of edge and corner-sharing OCeTh3 tetrahedra. In the second O2- site, O2- is bonded to two equivalent Th4+ and two Ce4+ atoms to form a mixture of edge and corner-sharing OCe2Th2 tetrahedra. In the third O2- site, O2- is bonded to two Th4+ and two Ce4+ atoms to form a mixture of edge and corner-sharing OCe2Th2 tetrahedra. In the fourth O2- site, O2- is bonded to two equivalent Th4+ and two equivalent Ce4+ atoms to form a mixture of edge and corner-sharing OCe2Th2 tetrahedra.