Materials Data on La6UO12 by Materials Project
La6UO12 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. U6+ is bonded in an octahedral geometry to six equivalent O2- atoms. All U–O bond lengths are 2.11 Å. La3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of La–O bond distances ranging from 2.36–2.84 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent La3+ atoms to form a mixture of edge and corner-sharing OLa4 tetrahedra. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one U6+ and three equivalent La3+ atoms.
36 MATERIALS SCIENCE↗