Ag3SI crystallizes in the triclinic P1 space group. There are six inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. In the third Ag site, Ag(3) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. In the fifth Ag site, Ag(5) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. In the sixth Ag site, Ag(6) is bonded in a distorted see-saw-like geometry to one S(1), one S(2), one I(1), and one I(2) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), and one Ag(6) atom to form corner-sharing SAg6 octahedra. The corner-sharing octahedral tilt angles range from 23-40°. In the second S site, S(2) is bonded to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), and one Ag(6) atom to form corner-sharing SAg6 octahedra. The corner-sharing octahedral tilt angles range from 23-40°. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 6-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), and one Ag(6) atom. In the second I site, I(2) is bonded in a 6-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), and one Ag(6) atom.
Ag3SI crystallizes in the triclinic P1 space group. There are six inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. The Ag(1)-S(1) bond length is 2.54 Å. The Ag(1)-S(2) bond length is 2.55 Å. The Ag(1)-I(1) bond length is 3.14 Å. The Ag(1)-I(2) bond length is 3.16 Å. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. The Ag(2)-S(1) bond length is 2.58 Å. The Ag(2)-S(2) bond length is 2.63 Å. The Ag(2)-I(1) bond length is 3.10 Å. The Ag(2)-I(2) bond length is 3.07 Å. In the third Ag site, Ag(3) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. The Ag(3)-S(1) bond length is 2.54 Å. The Ag(3)-S(2) bond length is 2.55 Å. The Ag(3)-I(1) bond length is 3.22 Å. The Ag(3)-I(2) bond length is 3.23 Å. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. The Ag(4)-S(1) bond length is 2.55 Å. The Ag(4)-S(2) bond length is 2.56 Å. The Ag(4)-I(1) bond length is 3.08 Å. The Ag(4)-I(2) bond length is 3.16 Å. In the fifth Ag site, Ag(5) is bonded in a 4-coordinate geometry to one S(1), one S(2), one I(1), and one I(2) atom. The Ag(5)-S(1) bond length is 2.63 Å. The Ag(5)-S(2) bond length is 2.58 Å. The Ag(5)-I(1) bond length is 3.09 Å. The Ag(5)-I(2) bond length is 3.07 Å. In the sixth Ag site, Ag(6) is bonded in a distorted see-saw-like geometry to one S(1), one S(2), one I(1), and one I(2) atom. The Ag(6)-S(1) bond length is 2.56 Å. The Ag(6)-S(2) bond length is 2.56 Å. The Ag(6)-I(1) bond length is 3.02 Å. The Ag(6)-I(2) bond length is 3.04 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), and one Ag(6) atom to form corner-sharing SAg6 octahedra. The corner-sharing octahedral tilt angles range from 23-40°. In the second S site, S(2) is bonded to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), and one Ag(6) atom to form corner-sharing SAg6 octahedra. The corner-sharing octahedral tilt angles range from 23-40°. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 6-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), and one Ag(6) atom. In the second I site, I(2) is bonded in a 6-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), one Ag(4), one Ag(5), and one Ag(6) atom.