Materials Data on Rb4U5O17 by Materials Project

Dataset · Wed Apr 29 04:00:00 EDT 2020

DOI:https://doi.org/10.17188/1270237· OSTI ID:1270237

Rb4U5O17 crystallizes in the orthorhombic Pbcn space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded to six O2- atoms to form RbO6 octahedra that share corners with four UO6 octahedra, corners with two equivalent UO7 pentagonal bipyramids, and edges with two equivalent RbO6 octahedra. The corner-sharing octahedra tilt angles range from 53–63°. There are a spread of Rb–O bond distances ranging from 2.83–2.98 Å. In the second Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Rb–O bond distances ranging from 2.86–3.37 Å. There are three inequivalent U6+ sites. In the first U6+ site, U6+ is bonded to six O2- atoms to form distorted UO6 octahedra that share a cornercorner with one RbO6 octahedra, corners with four UO6 octahedra, an edgeedge with one UO6 octahedra, and an edgeedge with one UO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 34–61°. There are a spread of U–O bond distances ranging from 1.85–2.33 Å. In the second U6+ site, U6+ is bonded to six O2- atoms to form UO6 octahedra that share corners with three equivalent RbO6 octahedra, corners with three UO6 octahedra, a cornercorner with one UO7 pentagonal bipyramid, an edgeedge with one UO6 octahedra, and an edgeedge with one UO7 pentagonal bipyramid. The corner-sharing octahedra tilt angles range from 34–63°. There are a spread of U–O bond distances ranging from 1.86–2.30 Å. In the third U6+ site, U6+ is bonded to seven O2- atoms to form distorted UO7 pentagonal bipyramids that share corners with two equivalent UO6 octahedra, corners with four equivalent RbO6 octahedra, and edges with four UO6 octahedra. The corner-sharing octahedra tilt angles range from 34–59°. There are a spread of U–O bond distances ranging from 1.85–2.48 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+ and three U6+ atoms. In the second O2- site, O2- is bonded in a distorted single-bond geometry to three Rb1+ and one U6+ atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Rb1+ and one U6+ atom. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to three Rb1+ and one U6+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three U6+ atoms. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to three Rb1+ and one U6+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to two Rb1+ and one U6+ atom. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to three U6+ atoms. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to three U6+ atoms.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1270237
• Report Number(s): mp-558239
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
O-Rb-U
Rb4U5O17
crystal structure