Sm5AgS8 crystallizes in the tetragonal I-4 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent S(2) atoms. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent S(2) atoms. Ag(1) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent S(2) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Sm(2), four equivalent Sm(1), and one Ag(1) atom to form a mixture of distorted edge, face, and corner-sharing SSm5Ag octahedra. The corner-sharing octahedral tilt angles range from 17-46°. In the second S site, S(2) is bonded in a 6-coordinate geometry to one Sm(2), four equivalent Sm(1), and one Ag(1) atom.
Sm5AgS8 crystallizes in the tetragonal I-4 space group. There are two inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent S(2) atoms. There are a spread of Sm(1)-S(1) bond distances ranging from 2.81-3.13 Å. There are a spread of Sm(1)-S(2) bond distances ranging from 2.79-3.12 Å. In the second Sm site, Sm(2) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent S(2) atoms. All Sm(2)-S(1) bond lengths are 3.03 Å. All Sm(2)-S(2) bond lengths are 2.81 Å. Ag(1) is bonded in a 8-coordinate geometry to four equivalent S(1) and four equivalent S(2) atoms. All Ag(1)-S(1) bond lengths are 2.81 Å. All Ag(1)-S(2) bond lengths are 3.18 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Sm(2), four equivalent Sm(1), and one Ag(1) atom to form a mixture of distorted edge, face, and corner-sharing SSm5Ag octahedra. The corner-sharing octahedral tilt angles range from 17-46°. In the second S site, S(2) is bonded in a 6-coordinate geometry to one Sm(2), four equivalent Sm(1), and one Ag(1) atom.