Materials Data on KSb3O5 by Materials Project

KSb3O5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.72–3.07 Å. There are three inequivalent Sb3+ sites. In the first Sb3+ site, Sb3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.01–2.67 Å. In the second Sb3+ site, Sb3+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.01–2.27 Å. In the third Sb3+ site, Sb3+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of Sb–O bond distances ranging from 1.97–2.03 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent K1+ and two Sb3+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two equivalent K1+ and two Sb3+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to one K1+ and two Sb3+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one K1+ and two Sb3+ atoms. In the fifth O2- site, O2- is bonded in a 2-coordinate geometry to one K1+ and three Sb3+ atoms.