BaPr2CoS5 crystallizes in the tetragonal I4/mcm space group. Ba(1) is bonded in a distorted q6 geometry to two equivalent S(2) and eight equivalent S(1) atoms. Pr(1) is bonded in a 8-coordinate geometry to two equivalent S(2) and six equivalent S(1) atoms. Co(1) is bonded in a distorted tetrahedral geometry to four equivalent S(1) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Ba(1), three equivalent Pr(1), and one Co(1) atom to form distorted SBa2Pr3Co octahedra that share corners with four equivalent S(2)Ba2Pr4 octahedra, corners with ten equivalent S(1)Ba2Pr3Co octahedra, edges with eight equivalent S(1)Ba2Pr3Co octahedra, faces with two equivalent S(1)Ba2Pr3Co octahedra, and faces with two equivalent S(2)Ba2Pr4 octahedra. The corner-sharing octahedral tilt angles range from 32-63°. In the second S site, S(2) is bonded to two equivalent Ba(1) and four equivalent Pr(1) atoms to form SBa2Pr4 octahedra that share corners with six equivalent S(2)Ba2Pr4 octahedra, corners with sixteen equivalent S(1)Ba2Pr3Co octahedra, and faces with eight equivalent S(1)Ba2Pr3Co octahedra. The corner-sharing octahedral tilt angles range from 0-63°.
BaPr2CoS5 crystallizes in the tetragonal I4/mcm space group. Ba(1) is bonded in a distorted q6 geometry to two equivalent S(2) and eight equivalent S(1) atoms. Both Ba(1)-S(2) bond lengths are 3.38 Å. All Ba(1)-S(1) bond lengths are 3.41 Å. Pr(1) is bonded in a 8-coordinate geometry to two equivalent S(2) and six equivalent S(1) atoms. Both Pr(1)-S(2) bond lengths are 2.97 Å. There are two shorter (2.83 Å) and four longer (3.07 Å) Pr(1)-S(1) bond lengths. Co(1) is bonded in a distorted tetrahedral geometry to four equivalent S(1) atoms. All Co(1)-S(1) bond lengths are 2.24 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Ba(1), three equivalent Pr(1), and one Co(1) atom to form distorted SBa2Pr3Co octahedra that share corners with four equivalent S(2)Ba2Pr4 octahedra, corners with ten equivalent S(1)Ba2Pr3Co octahedra, edges with eight equivalent S(1)Ba2Pr3Co octahedra, faces with two equivalent S(1)Ba2Pr3Co octahedra, and faces with two equivalent S(2)Ba2Pr4 octahedra. The corner-sharing octahedral tilt angles range from 32-63°. In the second S site, S(2) is bonded to two equivalent Ba(1) and four equivalent Pr(1) atoms to form SBa2Pr4 octahedra that share corners with six equivalent S(2)Ba2Pr4 octahedra, corners with sixteen equivalent S(1)Ba2Pr3Co octahedra, and faces with eight equivalent S(1)Ba2Pr3Co octahedra. The corner-sharing octahedral tilt angles range from 0-63°.