Materials Data on SiAg2 by Materials Project
Ag2Si is Hexagonal Laves structured and crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. there are three inequivalent Ag2+ sites. In the first Ag2+ site, Ag2+ is bonded in a 6-coordinate geometry to six Ag2+ atoms. There are four shorter (2.74 Å) and two longer (2.78 Å) Ag–Ag bond lengths. In the second Ag2+ site, Ag2+ is bonded in a distorted q6 geometry to six Ag2+ and four equivalent Si4- atoms. There are two shorter (2.70 Å) and two longer (2.80 Å) Ag–Ag bond lengths. All Ag–Si bond lengths are 3.06 Å. In the third Ag2+ site, Ag2+ is bonded in a 10-coordinate geometry to six Ag2+ and four equivalent Si4- atoms. There are one shorter (2.73 Å) and one longer (2.87 Å) Ag–Ag bond lengths. There are two shorter (3.00 Å) and two longer (3.03 Å) Ag–Si bond lengths. Si4- is bonded in a 1-coordinate geometry to six Ag2+ and one Si4- atom. The Si–Si bond length is 2.47 Å.