Materials Data on RbCu4S3 by Materials Project
RbCu4S3 is alpha bismuth trifluoride-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Rb1+ is bonded in a body-centered cubic geometry to eight equivalent S2- atoms. All Rb–S bond lengths are 3.43 Å. Cu+1.25+ is bonded to four S2- atoms to form a mixture of edge and corner-sharing CuS4 tetrahedra. There are two shorter (2.30 Å) and two longer (2.46 Å) Cu–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to four equivalent Rb1+ and four equivalent Cu+1.25+ atoms. In the second S2- site, S2- is bonded in a body-centered cubic geometry to eight equivalent Cu+1.25+ atoms.
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