Materials Data on Li3(Mg2Si)4 by Materials Project
Li3(Mg2Si)4 crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Li is bonded in a body-centered cubic geometry to eight equivalent Mg atoms. All Li–Mg bond lengths are 2.86 Å. Mg is bonded in a 7-coordinate geometry to three equivalent Li and four Si atoms. There are three shorter (2.83 Å) and one longer (2.89 Å) Mg–Si bond lengths. There are two inequivalent Si sites. In the first Si site, Si is bonded in a body-centered cubic geometry to eight equivalent Mg atoms. In the second Si site, Si is bonded in a body-centered cubic geometry to eight equivalent Mg atoms.