Materials Data on KRbS by Materials Project
RbKS crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Rb1+ is bonded in a 5-coordinate geometry to five equivalent S2- atoms. There are a spread of Rb–S bond distances ranging from 3.39–3.72 Å. K1+ is bonded to four equivalent S2- atoms to form a mixture of corner and edge-sharing KS4 tetrahedra. There are a spread of K–S bond distances ranging from 3.17–3.22 Å. S2- is bonded in a 9-coordinate geometry to five equivalent Rb1+ and four equivalent K1+ atoms.
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