Materials Data on Pr6Ge3S14 by Materials Project
Pr6Ge3S14 crystallizes in the trigonal P3 space group. The structure is three-dimensional. there are two inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Pr–S bond distances ranging from 2.89–3.16 Å. In the second Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Pr–S bond distances ranging from 2.89–3.13 Å. There are three inequivalent Ge+3.33+ sites. In the first Ge+3.33+ site, Ge+3.33+ is bonded in a tetrahedral geometry to four S2- atoms. There are one shorter (2.20 Å) and three longer (2.25 Å) Ge–S bond lengths. In the second Ge+3.33+ site, Ge+3.33+ is bonded in a tetrahedral geometry to four S2- atoms. There are one shorter (2.20 Å) and three longer (2.25 Å) Ge–S bond lengths. In the third Ge+3.33+ site, Ge+3.33+ is bonded in an octahedral geometry to six S2- atoms. There are three shorter (2.70 Å) and three longer (2.73 Å) Ge–S bond lengths. There are six inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Pr3+ and one Ge+3.33+ atom. In the second S2- site, S2- is bonded in a distorted rectangular see-saw-like geometry to three Pr3+ and one Ge+3.33+ atom. In the third S2- site, S2- is bonded in a distorted tetrahedral geometry to three equivalent Pr3+ and one Ge+3.33+ atom. In the fourth S2- site, S2- is bonded in a distorted tetrahedral geometry to three equivalent Pr3+ and one Ge+3.33+ atom. In the fifth S2- site, S2- is bonded in a 5-coordinate geometry to four Pr3+ and one Ge+3.33+ atom. In the sixth S2- site, S2- is bonded in a 5-coordinate geometry to four Pr3+ and one Ge+3.33+ atom.