Materials Data on NaYb(PS3)2 by Materials Project
NaYbP2S6 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Na1+ is bonded in a 5-coordinate geometry to five S2- atoms. There are a spread of Na–S bond distances ranging from 2.91–3.03 Å. Yb3+ is bonded to seven S2- atoms to form distorted edge-sharing YbS7 pentagonal bipyramids. There are a spread of Yb–S bond distances ranging from 2.87–2.98 Å. There are two inequivalent P4+ sites. In the first P4+ site, P4+ is bonded in a trigonal planar geometry to three S2- atoms. There are a spread of P–S bond distances ranging from 1.95–1.97 Å. In the second P4+ site, P4+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are a spread of P–S bond distances ranging from 2.01–2.06 Å. There are six inequivalent S2- sites. In the first S2- site, S2- is bonded in a 3-coordinate geometry to one Na1+, one Yb3+, and one P4+ atom. In the second S2- site, S2- is bonded in a distorted L-shaped geometry to one Yb3+ and one P4+ atom. In the third S2- site, S2- is bonded in a 3-coordinate geometry to one Na1+, one Yb3+, and one P4+ atom. In the fourth S2- site, S2- is bonded to one Na1+, two equivalent Yb3+, and one P4+ atom to form distorted edge-sharing SNaYb2P tetrahedra. In the fifth S2- site, S2- is bonded in a distorted L-shaped geometry to one Yb3+ and one P4+ atom. In the sixth S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent Na1+, one Yb3+, and one P4+ atom.