Materials Data on Rb2S by Materials Project
Rb2S is Fluorite structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Rb1+ is bonded to four equivalent S2- atoms to form a mixture of edge and corner-sharing RbS4 tetrahedra. All Rb–S bond lengths are 3.39 Å. S2- is bonded in a body-centered cubic geometry to eight equivalent Rb1+ atoms.
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