Materials Data on As2S2O9 by Materials Project
As2S2O9 crystallizes in the monoclinic Pc space group. The structure is zero-dimensional and consists of four As2S2O9 clusters. there are two inequivalent As5+ sites. In the first As5+ site, As5+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of As–O bond distances ranging from 1.79–1.93 Å. In the second As5+ site, As5+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of As–O bond distances ranging from 1.80–1.93 Å. There are two inequivalent S4+ sites. In the first S4+ site, S4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of S–O bond distances ranging from 1.44–1.56 Å. In the second S4+ site, S4+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of S–O bond distances ranging from 1.44–1.57 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two As5+ atoms. In the second O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. In the third O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one As5+ and one S4+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one As5+ and one S4+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. In the seventh O2- site, O2- is bonded in a single-bond geometry to one S4+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one As5+ and one S4+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one As5+ and one S4+ atom.