Materials Data on Sr(Ag3O2)2 by Materials Project
Sr(Ag3O2)2 crystallizes in the orthorhombic Pnna space group. The structure is three-dimensional. Sr2+ is bonded to six O2- atoms to form edge-sharing SrO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.49–2.73 Å. There are four inequivalent Ag1+ sites. In the first Ag1+ site, Ag1+ is bonded in a linear geometry to two O2- atoms. There are one shorter (2.11 Å) and one longer (2.12 Å) Ag–O bond lengths. In the second Ag1+ site, Ag1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are two shorter (2.42 Å) and two longer (2.90 Å) Ag–O bond lengths. In the third Ag1+ site, Ag1+ is bonded in a bent 150 degrees geometry to two O2- atoms. There are one shorter (2.14 Å) and one longer (2.16 Å) Ag–O bond lengths. In the fourth Ag1+ site, Ag1+ is bonded in a linear geometry to two equivalent O2- atoms. Both Ag–O bond lengths are 2.13 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to one Sr2+ and four Ag1+ atoms. In the second O2- site, O2- is bonded to two equivalent Sr2+ and three Ag1+ atoms to form a mixture of distorted edge and corner-sharing OSr2Ag3 trigonal bipyramids.