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PrS2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Pr4+ is bonded in a 12-coordinate geometry to twelve equivalent S2- atoms. All Pr–S bond lengths are 3.30 Å. S2- is bonded to six equivalent Pr4+ and six equivalent S2- atoms to form a mixture of face, edge, and corner-sharing SPr6S6 cuboctahedra. All S–S bond lengths are 2.81 Å.
Pr3S4 crystallizes in the cubic I-43d space group. The structure is three-dimensional. Pr is bonded to eight equivalent S atoms to form a mixture of distorted face, edge, and corner-sharing PrS8 hexagonal bipyramids. There are four shorter (2.92 Å) and four longer (3.07 Å) Pr–S bond lengths. S is bonded to six equivalent Pr atoms to form a mixture of distorted face, edge, and corner-sharing SPr6 octahedra. The corner-sharing octahedra tilt angles range from 17–50°.
Pr2S3 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded to seven S2- atoms to form distorted edge-sharing PrS7 pentagonal bipyramids. There are a spread of Pr–S bond distances ranging from 2.86–3.05 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 2.86–3.14 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded to five Pr3+ atoms to form a mixture of distorted face, edge, and corner-sharing SPr5 square pyramids. In the second S2- site, S2- is bonded to five Pr3+ atoms to form a mixture of distorted face, edge, and corner-sharing SPr5 trigonal bipyramids. In the third S2- site, S2- is bonded to five Pr3+ atoms to form a mixture of distorted edge and corner-sharing SPr5 trigonal bipyramids.
PrS2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Pr4+ is bonded in a 9-coordinate geometry to nine S2- atoms. There are a spread of Pr–S bond distances ranging from 2.88–3.21 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded to five equivalent Pr4+ atoms to form a mixture of distorted corner and edge-sharing SPr5 trigonal bipyramids. In the second S2- site, S2- is bonded in a 5-coordinate geometry to four equivalent Pr4+ and one S2- atom. The S–S bond length is 2.12 Å. In the third S2- site, S2- is bonded in a 5-coordinate geometry to four equivalent Pr4+ and one S2- atom.
PrS is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pr is bonded to six equivalent S atoms to form a mixture of edge and corner-sharing PrS6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Pr–S bond lengths are 2.90 Å. S is bonded to six equivalent Pr atoms to form a mixture of edge and corner-sharing SPr6 octahedra. The corner-sharing octahedral tilt angles are 0°.
PrS2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Pr4+ is bonded in a 9-coordinate geometry to nine S2- atoms. There are a spread of Pr–S bond distances ranging from 2.87–3.20 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to five equivalent Pr4+ atoms to form a mixture of distorted corner and edge-sharing SPr5 trigonal bipyramids. In the second S2- site, S2- is bonded in a 5-coordinate geometry to four equivalent Pr4+ and one S2- atom. The S–S bond length is 2.15 Å.
Pr10S19 crystallizes in the tetragonal P4_2/n space group. The structure is three-dimensional. there are three inequivalent Pr+3.80+ sites. In the first Pr+3.80+ site, Pr+3.80+ is bonded in a 9-coordinate geometry to nine S2- atoms. There are a spread of Pr–S bond distances ranging from 2.92–3.01 Å. In the second Pr+3.80+ site, Pr+3.80+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Pr–S bond distances ranging from 2.88–3.14 Å. In the third Pr+3.80+ site, Pr+3.80+ is bonded in a 9-coordinate geometry to nine S2- atoms. There are a spread of Pr–S bond distances ranging from 2.92–3.20 Å. There are six inequivalent S2- sites. In the first S2- site, S2- is bonded to five Pr+3.80+ atoms to form a mixture of distorted edge and corner-sharing SPr5 trigonal bipyramids. In the second S2- site, S2- is bonded to five Pr+3.80+ atoms to form a mixture of distorted edge and corner-sharing SPr5 trigonal bipyramids. In the third S2- site, S2- is bonded in a 5-coordinate geometry to four Pr+3.80+ and one S2- atom. The S–S bond length is 2.16 Å. In the fourth S2- site, S2- is bonded in a 5-coordinate geometry to four Pr+3.80+ and one S2- atom. In the fifth S2- site, S2- is bonded to five Pr+3.80+ atoms to form a mixture of distorted edge and corner-sharing SPr5 trigonal bipyramids. In the sixth S2- site, S2- is bonded in a 4-coordinate geometry to four equivalent Pr+3.80+ atoms.
PrS3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Pr4+ is bonded to twelve equivalent S+1.33- atoms to form a mixture of distorted face and corner-sharing PrS12 cuboctahedra. There are six shorter (2.90 Å) and six longer (3.25 Å) Pr–S bond lengths. S+1.33- is bonded in a 2-coordinate geometry to four equivalent Pr4+ atoms.
Pr5S9 crystallizes in the monoclinic C2 space group. The structure is three-dimensional. there are five inequivalent Pr+3.60+ sites. In the first Pr+3.60+ site, Pr+3.60+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Pr–S bond distances ranging from 2.88–3.02 Å. In the second Pr+3.60+ site, Pr+3.60+ is bonded in a 9-coordinate geometry to nine S2- atoms. There are a spread of Pr–S bond distances ranging from 2.91–3.09 Å. In the third Pr+3.60+ site, Pr+3.60+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Pr–S bond distances ranging from 2.88–3.04 Å. In the fourth Pr+3.60+ site, Pr+3.60+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Pr–S bond distances ranging from 2.86–3.14 Å. In the fifth Pr+3.60+ site, Pr+3.60+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Pr–S bond distances ranging from 2.87–3.14 Å. There are ten inequivalent S2- sites. In the first S2- site, S2- is bonded in a 4-coordinate geometry to four Pr+3.60+ atoms. In the second S2- site, S2- is bonded in a 4-coordinate geometry to four Pr+3.60+ atoms. In the third S2- site, S2- is bonded in a 8-coordinate geometry to four Pr+3.60+ and four S2- atoms. There are a spread of S–S bond distances ranging from 2.51–2.79 Å. In the fourth S2- site, S2- is bonded to five Pr+3.60+ atoms to form a mixture of distorted edge and corner-sharing SPr5 trigonal bipyramids. In the fifth S2- site, S2- is bonded to five Pr+3.60+ atoms to form a mixture of distorted edge and corner-sharing SPr5 trigonal bipyramids. In the sixth S2- site, S2- is bonded in a 5-coordinate geometry to five Pr+3.60+ atoms. In the seventh S2- site, S2- is bonded to five Pr+3.60+ atoms to form a mixture of distorted edge and corner-sharing SPr5 trigonal bipyramids. In the eighth S2- site, S2- is bonded to five Pr+3.60+ atoms to form a mixture of distorted edge and corner-sharing SPr5 trigonal bipyramids. In the ninth S2- site, S2- is bonded in a 6-coordinate geometry to four Pr+3.60+ and two equivalent S2- atoms. In the tenth S2- site, S2- is bonded in a 5-coordinate geometry to four Pr+3.60+ and one S2- atom.
Pr5S8 is beta indium sulfide-like structured and crystallizes in the cubic F-43m space group. The structure is three-dimensional. there are two inequivalent Pr+3.20+ sites. In the first Pr+3.20+ site, Pr+3.20+ is bonded to six S2- atoms to form PrS6 octahedra that share corners with three equivalent PrS4 tetrahedra and edges with six equivalent PrS6 octahedra. There are three shorter (2.80 Å) and three longer (2.94 Å) Pr–S bond lengths. In the second Pr+3.20+ site, Pr+3.20+ is bonded to four equivalent S2- atoms to form corner-sharing PrS4 tetrahedra. The corner-sharing octahedral tilt angles are 59°. All Pr–S bond lengths are 2.76 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted T-shaped geometry to three equivalent Pr+3.20+ atoms. In the second S2- site, S2- is bonded to four Pr+3.20+ atoms to form a mixture of distorted corner and edge-sharing SPr4 trigonal pyramids.