Pr4CoS7 crystallizes in the hexagonal P6_3 space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a distorted rectangular see-saw-like geometry to one S(2) and three equivalent S(1) atoms. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one S(2), three equivalent S(1), and three equivalent S(3) atoms. Co(1) is bonded to six equivalent S(3) atoms to form distorted face-sharing CoS6 octahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to one Pr(1) and three equivalent Pr(2) atoms. In the second S site, S(2) is bonded to one Pr(1) and three equivalent Pr(2) atoms to form corner-sharing SPr4 tetrahedra. In the third S site, S(3) is bonded to three equivalent Pr(2) and two equivalent Co(1) atoms to form distorted SPr3Co2 square pyramids that share corners with two equivalent S(3)Pr3Co2 square pyramids, corners with three equivalent S(2)Pr4 tetrahedra, edges with four equivalent S(3)Pr3Co2 square pyramids, and faces with two equivalent S(3)Pr3Co2 square pyramids.
Pr4CoS7 crystallizes in the hexagonal P6_3 space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a distorted rectangular see-saw-like geometry to one S(2) and three equivalent S(1) atoms. The Pr(1)-S(2) bond length is 2.66 Å. All Pr(1)-S(1) bond lengths are 2.71 Å. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one S(2), three equivalent S(1), and three equivalent S(3) atoms. The Pr(2)-S(2) bond length is 2.76 Å. There are a spread of Pr(2)-S(1) bond distances ranging from 2.93-3.14 Å. There are a spread of Pr(2)-S(3) bond distances ranging from 2.86-2.99 Å. Co(1) is bonded to six equivalent S(3) atoms to form distorted face-sharing CoS6 octahedra. There are three shorter (2.41 Å) and three longer (2.81 Å) Co(1)-S(3) bond lengths. There are three inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to one Pr(1) and three equivalent Pr(2) atoms. In the second S site, S(2) is bonded to one Pr(1) and three equivalent Pr(2) atoms to form corner-sharing SPr4 tetrahedra. In the third S site, S(3) is bonded to three equivalent Pr(2) and two equivalent Co(1) atoms to form distorted SPr3Co2 square pyramids that share corners with two equivalent S(3)Pr3Co2 square pyramids, corners with three equivalent S(2)Pr4 tetrahedra, edges with four equivalent S(3)Pr3Co2 square pyramids, and faces with two equivalent S(3)Pr3Co2 square pyramids.