Materials Data on Sr2UCdO6 by Materials Project
Sr2CdUO6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.51–3.16 Å. U6+ is bonded to six O2- atoms to form UO6 octahedra that share corners with six equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 29–35°. There are four shorter (2.09 Å) and two longer (2.10 Å) U–O bond lengths. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with six equivalent UO6 octahedra. The corner-sharing octahedra tilt angles range from 29–35°. There are a spread of Cd–O bond distances ranging from 2.32–2.37 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Sr2+, one U6+, and one Cd2+ atom to form distorted corner-sharing OSr2UCd tetrahedra. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three equivalent Sr2+, one U6+, and one Cd2+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three equivalent Sr2+, one U6+, and one Cd2+ atom.