Materials Data on Ag2S by Materials Project

Ag2S crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are four inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a linear geometry to two S2- atoms. Both Ag–S bond lengths are 2.44 Å. In the second Ag1+ site, Ag1+ is bonded in a linear geometry to two S2- atoms. Both Ag–S bond lengths are 2.44 Å. In the third Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are two shorter (2.51 Å) and one longer (2.75 Å) Ag–S bond lengths. In the fourth Ag1+ site, Ag1+ is bonded in a 3-coordinate geometry to three equivalent S2- atoms. There are two shorter (2.52 Å) and one longer (2.74 Å) Ag–S bond lengths. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to five Ag1+ atoms. In the second S2- site, S2- is bonded in a 5-coordinate geometry to five Ag1+ atoms.