Materials Data on RbU2SbS8 by Materials Project
RbU2SbS8 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. Rb1+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Rb–S bond distances ranging from 3.34–3.59 Å. U6+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of U–S bond distances ranging from 2.72–2.86 Å. Sb3+ is bonded in a see-saw-like geometry to four S2- atoms. There are two shorter (2.46 Å) and two longer (2.71 Å) Sb–S bond lengths. There are five inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to one Rb1+, two equivalent U6+, and one S2- atom. The S–S bond length is 2.07 Å. In the second S2- site, S2- is bonded in a 4-coordinate geometry to one Rb1+, two equivalent U6+, and one S2- atom. In the third S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to one Rb1+, two equivalent U6+, and one Sb3+ atom. In the fourth S2- site, S2- is bonded in a 4-coordinate geometry to one Rb1+, two equivalent U6+, and one Sb3+ atom. In the fifth S2- site, S2- is bonded in a 4-coordinate geometry to one Rb1+, two equivalent U6+, and one Sb3+ atom.