Materials Data on UCd2O5 by Materials Project
UCd2O5 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. U6+ is bonded to six O2- atoms to form corner-sharing UO6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are a spread of U–O bond distances ranging from 1.94–2.30 Å. Cd2+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Cd–O bond distances ranging from 2.20–2.32 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one U6+ and one Cd2+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to one U6+ and two equivalent Cd2+ atoms. In the third O2- site, O2- is bonded to two equivalent U6+ and two equivalent Cd2+ atoms to form corner-sharing OU2Cd2 tetrahedra.