Li3Ag2Si3 crystallizes in the tetragonal P4_2/nnm space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to two equivalent Si(2) and four equivalent Si(1) atoms. In the second Li site, Li(2) is bonded to four equivalent Ag(1) atoms to form distorted corner-sharing LiAg4 tetrahedra. Ag(1) is bonded in a 2-coordinate geometry to two equivalent Li(2) and two equivalent Si(2) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 4-coordinate geometry to four equivalent Li(1) atoms. In the second Si site, Si(2) is bonded in a distorted body-centered cubic geometry to four equivalent Li(1) and four equivalent Ag(1) atoms.
Li3Ag2Si3 crystallizes in the tetragonal P4_2/nnm space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 6-coordinate geometry to two equivalent Si(2) and four equivalent Si(1) atoms. Both Li(1)-Si(2) bond lengths are 2.71 Å. All Li(1)-Si(1) bond lengths are 2.71 Å. In the second Li site, Li(2) is bonded to four equivalent Ag(1) atoms to form distorted corner-sharing LiAg4 tetrahedra. All Li(2)-Ag(1) bond lengths are 2.71 Å. Ag(1) is bonded in a 2-coordinate geometry to two equivalent Li(2) and two equivalent Si(2) atoms. Both Ag(1)-Si(2) bond lengths are 2.71 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a 4-coordinate geometry to four equivalent Li(1) atoms. In the second Si site, Si(2) is bonded in a distorted body-centered cubic geometry to four equivalent Li(1) and four equivalent Ag(1) atoms.