Materials Data on RbSi by Materials Project
RbSi crystallizes in the cubic P-43n space group. The structure is three-dimensional. there are two inequivalent Rb sites. In the first Rb site, Rb is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Rb–Si bond distances ranging from 3.46–3.83 Å. In the second Rb site, Rb is bonded in a 6-coordinate geometry to six Si atoms. There are three shorter (3.58 Å) and three longer (3.83 Å) Rb–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to six Rb and three equivalent Si atoms. There are two shorter (2.43 Å) and one longer (2.45 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a 9-coordinate geometry to six Rb and three equivalent Si atoms. All Si–Si bond lengths are 2.44 Å.