Materials Data on K3Gd3(PS4)4 by Materials Project
K3Gd3(PS4)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of K–S bond distances ranging from 3.28–3.67 Å. In the second K1+ site, K1+ is bonded in a body-centered cubic geometry to eight S2- atoms. There are a spread of K–S bond distances ranging from 3.24–3.43 Å. There are two inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Gd–S bond distances ranging from 2.80–3.12 Å. In the second Gd3+ site, Gd3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Gd–S bond distances ranging from 2.87–3.09 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded in a tetrahedral geometry to four S2- atoms. There are a spread of P–S bond distances ranging from 2.04–2.09 Å. In the second P5+ site, P5+ is bonded in a tetrahedral geometry to four S2- atoms. There are a spread of P–S bond distances ranging from 2.04–2.08 Å. There are eight inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to two K1+, one Gd3+, and one P5+ atom. In the second S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to one K1+, two equivalent Gd3+, and one P5+ atom. In the third S2- site, S2- is bonded to one K1+, two Gd3+, and one P5+ atom to form distorted corner-sharing SKGd2P trigonal pyramids. In the fourth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to two K1+, one Gd3+, and one P5+ atom. In the fifth S2- site, S2- is bonded in a 4-coordinate geometry to two K1+, one Gd3+, and one P5+ atom. In the sixth S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent K1+, one Gd3+, and one P5+ atom. In the seventh S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Gd3+ and one P5+ atom. In the eighth S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to two equivalent K1+, one Gd3+, and one P5+ atom.