Materials Data on Pr3AgGeS7 by Materials Project
Pr3AgGeS7 crystallizes in the hexagonal P6_3 space group. The structure is three-dimensional. Pr3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Pr–S bond distances ranging from 2.90–3.17 Å. Ag1+ is bonded in a trigonal planar geometry to three equivalent S2- atoms. All Ag–S bond lengths are 2.46 Å. Ge4+ is bonded in a tetrahedral geometry to four S2- atoms. There are one shorter (2.21 Å) and three longer (2.25 Å) Ge–S bond lengths. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted tetrahedral geometry to three equivalent Pr3+ and one Ge4+ atom. In the second S2- site, S2- is bonded in a 4-coordinate geometry to three equivalent Pr3+ and one Ge4+ atom. In the third S2- site, S2- is bonded in a 5-coordinate geometry to four equivalent Pr3+ and one Ag1+ atom.