Ag8Sb5As3S16 crystallizes in the triclinic P1 space group. There are eight inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 5-coordinate geometry to one S(1), one S(11), one S(13), one S(6), and one S(9) atom. In the second Ag site, Ag(2) is bonded in a distorted rectangular see-saw-like geometry to one S(10), one S(12), one S(2), and one S(5) atom. In the third Ag site, Ag(3) is bonded in a 4-coordinate geometry to one S(11), one S(3), one S(8), and one S(9) atom. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one S(10), one S(12), one S(4), and one S(7) atom. In the fifth Ag site, Ag(5) is bonded to one S(13), one S(4), one S(7), and one S(9) atom to form distorted AgS4 tetrahedra that share corners with two equivalent Sb(1)S5 square pyramids. In the sixth Ag site, Ag(6) is bonded in a distorted tetrahedral geometry to one S(10), one S(14), one S(3), and one S(8) atom. In the seventh Ag site, Ag(7) is bonded to one S(11), one S(15), one S(2), and one S(5) atom to form distorted AgS4 tetrahedra that share  a cornercorner with one Sb(1)S5 square pyramid. In the eighth Ag site, Ag(8) is bonded to one S(1), one S(12), one S(16), and one S(6) atom to form distorted AgS4 tetrahedra that share  an edgeedge with one Sb(1)S5 square pyramid. There are five inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one S(1), one S(12), one S(13), one S(4), and one S(5) atom to form distorted SbS5 square pyramids that share  a cornercorner with one Ag(7)S4 tetrahedra, corners with two equivalent Ag(5)S4 tetrahedra, and  an edgeedge with one Ag(8)S4 tetrahedra. In the second Sb site, Sb(2) is bonded in a distorted see-saw-like geometry to one S(14), one S(2), one S(3), and one S(6) atom. In the third Sb site, Sb(3) is bonded in a distorted see-saw-like geometry to one S(15), one S(2), one S(3), and one S(7) atom. In the fourth Sb site, Sb(4) is bonded in a distorted see-saw-like geometry to one S(1), one S(16), one S(4), and one S(8) atom. In the fifth Sb site, Sb(5) is bonded in a 3-coordinate geometry to one S(12), one S(13), and one S(7) atom. There are three inequivalent As sites. In the first As site, As(1) is bonded in a distorted T-shaped geometry to one S(11), one S(14), and one S(8) atom. In the second As site, As(2) is bonded in a distorted T-shaped geometry to one S(10), one S(15), and one S(5) atom. In the third As site, As(3) is bonded in a distorted T-shaped geometry to one S(16), one S(6), and one S(9) atom. There are sixteen inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Ag(8), one Sb(1), and one Sb(4) atom to form distorted SAg2Sb2 tetrahedra that share  a cornercorner with one S(5)Ag2SbAs tetrahedra,  a cornercorner with one S(8)Ag2SbAs tetrahedra,  a cornercorner with one S(11)Ag3As tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, corners with two equivalent S(4)Ag2Sb2 tetrahedra, and corners with two equivalent S(6)Ag2SbAs tetrahedra. In the second S site, S(2) is bonded in a 4-coordinate geometry to one Ag(2), one Ag(7), one Sb(2), and one Sb(3) atom. In the third S site, S(3) is bonded to one Ag(3), one Ag(6), one Sb(2), and one Sb(3) atom to form distorted SAg2Sb2 tetrahedra that share  a cornercorner with one S(7)Ag2Sb2 tetrahedra,  a cornercorner with one S(6)Ag2SbAs tetrahedra,  a cornercorner with one S(11)Ag3As tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, and corners with two equivalent S(8)Ag2SbAs tetrahedra. In the fourth S site, S(4) is bonded to one Ag(4), one Ag(5), one Sb(1), and one Sb(4) atom to form distorted SAg2Sb2 tetrahedra that share  a cornercorner with one S(5)Ag2SbAs tetrahedra,  a cornercorner with one S(8)Ag2SbAs tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, corners with two equivalent S(1)Ag2Sb2 tetrahedra, and corners with two equivalent S(7)Ag2Sb2 tetrahedra. In the fifth S site, S(5) is bonded to one Ag(2), one Ag(7), one Sb(1), and one As(2) atom to form distorted SAg2SbAs tetrahedra that share  a cornercorner with one S(1)Ag2Sb2 tetrahedra,  a cornercorner with one S(4)Ag2Sb2 tetrahedra, and  a cornercorner with one S(11)Ag3As tetrahedra. In the sixth S site, S(6) is bonded to one Ag(1), one Ag(8), one Sb(2), and one As(3) atom to form distorted SAg2SbAs tetrahedra that share  a cornercorner with one S(3)Ag2Sb2 tetrahedra,  a cornercorner with one S(11)Ag3As tetrahedra, corners with two equivalent S(1)Ag2Sb2 tetrahedra, and corners with two equivalent S(9)Ag3As tetrahedra. In the seventh S site, S(7) is bonded to one Ag(4), one Ag(5), one Sb(3), and one Sb(5) atom to form SAg2Sb2 tetrahedra that share  a cornercorner with one S(3)Ag2Sb2 tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, and corners with two equivalent S(4)Ag2Sb2 tetrahedra. In the eighth S site, S(8) is bonded to one Ag(3), one Ag(6), one Sb(4), and one As(1) atom to form distorted SAg2SbAs tetrahedra that share  a cornercorner with one S(1)Ag2Sb2 tetrahedra,  a cornercorner with one S(4)Ag2Sb2 tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, corners with two equivalent S(3)Ag2Sb2 tetrahedra, and corners with two equivalent S(11)Ag3As tetrahedra. In the ninth S site, S(9) is bonded to one Ag(1), one Ag(3), one Ag(5), and one As(3) atom to form distorted SAg3As tetrahedra that share  a cornercorner with one S(1)Ag2Sb2 tetrahedra,  a cornercorner with one S(3)Ag2Sb2 tetrahedra,  a cornercorner with one S(4)Ag2Sb2 tetrahedra,  a cornercorner with one S(7)Ag2Sb2 tetrahedra,  a cornercorner with one S(8)Ag2SbAs tetrahedra, corners with two equivalent S(6)Ag2SbAs tetrahedra, and  an edgeedge with one S(11)Ag3As tetrahedra. In the tenth S site, S(10) is bonded in a 4-coordinate geometry to one Ag(2), one Ag(4), one Ag(6), and one As(2) atom. In the eleventh S site, S(11) is bonded to one Ag(1), one Ag(3), one Ag(7), and one As(1) atom to form distorted SAg3As tetrahedra that share  a cornercorner with one S(1)Ag2Sb2 tetrahedra,  a cornercorner with one S(3)Ag2Sb2 tetrahedra,  a cornercorner with one S(5)Ag2SbAs tetrahedra,  a cornercorner with one S(6)Ag2SbAs tetrahedra, corners with two equivalent S(8)Ag2SbAs tetrahedra, and  an edgeedge with one S(9)Ag3As tetrahedra. In the twelfth S site, S(12) is bonded in a 5-coordinate geometry to one Ag(2), one Ag(4), one Ag(8), one Sb(1), and one Sb(5) atom. In the thirteenth S site, S(13) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(5), one Sb(1), and one Sb(5) atom. In the fourteenth S site, S(14) is bonded in a 3-coordinate geometry to one Ag(6), one Sb(2), and one As(1) atom. In the fifteenth S site, S(15) is bonded in a distorted trigonal non-coplanar geometry to one Ag(7), one Sb(3), and one As(2) atom. In the sixteenth S site, S(16) is bonded in a 3-coordinate geometry to one Ag(8), one Sb(4), and one As(3) atom.
Ag8Sb5As3S16 crystallizes in the triclinic P1 space group. There are eight inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 5-coordinate geometry to one S(1), one S(11), one S(13), one S(6), and one S(9) atom. The Ag(1)-S(1) bond length is 2.65 Å. The Ag(1)-S(11) bond length is 2.82 Å. The Ag(1)-S(13) bond length is 3.10 Å. The Ag(1)-S(6) bond length is 2.62 Å. The Ag(1)-S(9) bond length is 2.66 Å. In the second Ag site, Ag(2) is bonded in a distorted rectangular see-saw-like geometry to one S(10), one S(12), one S(2), and one S(5) atom. The Ag(2)-S(10) bond length is 2.67 Å. The Ag(2)-S(12) bond length is 2.78 Å. The Ag(2)-S(2) bond length is 2.63 Å. The Ag(2)-S(5) bond length is 2.62 Å. In the third Ag site, Ag(3) is bonded in a 4-coordinate geometry to one S(11), one S(3), one S(8), and one S(9) atom. The Ag(3)-S(11) bond length is 2.66 Å. The Ag(3)-S(3) bond length is 2.60 Å. The Ag(3)-S(8) bond length is 2.61 Å. The Ag(3)-S(9) bond length is 2.81 Å. In the fourth Ag site, Ag(4) is bonded in a 4-coordinate geometry to one S(10), one S(12), one S(4), and one S(7) atom. The Ag(4)-S(10) bond length is 2.85 Å. The Ag(4)-S(12) bond length is 2.64 Å. The Ag(4)-S(4) bond length is 2.60 Å. The Ag(4)-S(7) bond length is 2.62 Å. In the fifth Ag site, Ag(5) is bonded to one S(13), one S(4), one S(7), and one S(9) atom to form distorted AgS4 tetrahedra that share corners with two equivalent Sb(1)S5 square pyramids. The Ag(5)-S(13) bond length is 2.65 Å. The Ag(5)-S(4) bond length is 2.97 Å. The Ag(5)-S(7) bond length is 2.58 Å. The Ag(5)-S(9) bond length is 2.57 Å. In the sixth Ag site, Ag(6) is bonded in a distorted tetrahedral geometry to one S(10), one S(14), one S(3), and one S(8) atom. The Ag(6)-S(10) bond length is 2.56 Å. The Ag(6)-S(14) bond length is 2.63 Å. The Ag(6)-S(3) bond length is 2.99 Å. The Ag(6)-S(8) bond length is 2.55 Å. In the seventh Ag site, Ag(7) is bonded to one S(11), one S(15), one S(2), and one S(5) atom to form distorted AgS4 tetrahedra that share  a cornercorner with one Sb(1)S5 square pyramid. The Ag(7)-S(11) bond length is 2.56 Å. The Ag(7)-S(15) bond length is 2.63 Å. The Ag(7)-S(2) bond length is 3.02 Å. The Ag(7)-S(5) bond length is 2.56 Å. In the eighth Ag site, Ag(8) is bonded to one S(1), one S(12), one S(16), and one S(6) atom to form distorted AgS4 tetrahedra that share  an edgeedge with one Sb(1)S5 square pyramid. The Ag(8)-S(1) bond length is 2.97 Å. The Ag(8)-S(12) bond length is 2.56 Å. The Ag(8)-S(16) bond length is 2.62 Å. The Ag(8)-S(6) bond length is 2.56 Å. There are five inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one S(1), one S(12), one S(13), one S(4), and one S(5) atom to form distorted SbS5 square pyramids that share  a cornercorner with one Ag(7)S4 tetrahedra, corners with two equivalent Ag(5)S4 tetrahedra, and  an edgeedge with one Ag(8)S4 tetrahedra. The Sb(1)-S(1) bond length is 2.63 Å. The Sb(1)-S(12) bond length is 3.06 Å. The Sb(1)-S(13) bond length is 2.50 Å. The Sb(1)-S(4) bond length is 2.54 Å. The Sb(1)-S(5) bond length is 3.02 Å. In the second Sb site, Sb(2) is bonded in a distorted see-saw-like geometry to one S(14), one S(2), one S(3), and one S(6) atom. The Sb(2)-S(14) bond length is 2.51 Å. The Sb(2)-S(2) bond length is 2.70 Å. The Sb(2)-S(3) bond length is 2.52 Å. The Sb(2)-S(6) bond length is 2.86 Å. In the third Sb site, Sb(3) is bonded in a distorted see-saw-like geometry to one S(15), one S(2), one S(3), and one S(7) atom. The Sb(3)-S(15) bond length is 2.51 Å. The Sb(3)-S(2) bond length is 2.54 Å. The Sb(3)-S(3) bond length is 2.69 Å. The Sb(3)-S(7) bond length is 2.83 Å. In the fourth Sb site, Sb(4) is bonded in a distorted see-saw-like geometry to one S(1), one S(16), one S(4), and one S(8) atom. The Sb(4)-S(1) bond length is 2.54 Å. The Sb(4)-S(16) bond length is 2.51 Å. The Sb(4)-S(4) bond length is 2.65 Å. The Sb(4)-S(8) bond length is 2.91 Å. In the fifth Sb site, Sb(5) is bonded in a 3-coordinate geometry to one S(12), one S(13), and one S(7) atom. The Sb(5)-S(12) bond length is 2.48 Å. The Sb(5)-S(13) bond length is 2.53 Å. The Sb(5)-S(7) bond length is 2.48 Å. There are three inequivalent As sites. In the first As site, As(1) is bonded in a distorted T-shaped geometry to one S(11), one S(14), and one S(8) atom. The As(1)-S(11) bond length is 2.27 Å. The As(1)-S(14) bond length is 2.34 Å. The As(1)-S(8) bond length is 2.30 Å. In the second As site, As(2) is bonded in a distorted T-shaped geometry to one S(10), one S(15), and one S(5) atom. The As(2)-S(10) bond length is 2.27 Å. The As(2)-S(15) bond length is 2.34 Å. The As(2)-S(5) bond length is 2.30 Å. In the third As site, As(3) is bonded in a distorted T-shaped geometry to one S(16), one S(6), and one S(9) atom. The As(3)-S(16) bond length is 2.34 Å. The As(3)-S(6) bond length is 2.30 Å. The As(3)-S(9) bond length is 2.27 Å. There are sixteen inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Ag(8), one Sb(1), and one Sb(4) atom to form distorted SAg2Sb2 tetrahedra that share  a cornercorner with one S(5)Ag2SbAs tetrahedra,  a cornercorner with one S(8)Ag2SbAs tetrahedra,  a cornercorner with one S(11)Ag3As tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, corners with two equivalent S(4)Ag2Sb2 tetrahedra, and corners with two equivalent S(6)Ag2SbAs tetrahedra. In the second S site, S(2) is bonded in a 4-coordinate geometry to one Ag(2), one Ag(7), one Sb(2), and one Sb(3) atom. In the third S site, S(3) is bonded to one Ag(3), one Ag(6), one Sb(2), and one Sb(3) atom to form distorted SAg2Sb2 tetrahedra that share  a cornercorner with one S(7)Ag2Sb2 tetrahedra,  a cornercorner with one S(6)Ag2SbAs tetrahedra,  a cornercorner with one S(11)Ag3As tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, and corners with two equivalent S(8)Ag2SbAs tetrahedra. In the fourth S site, S(4) is bonded to one Ag(4), one Ag(5), one Sb(1), and one Sb(4) atom to form distorted SAg2Sb2 tetrahedra that share  a cornercorner with one S(5)Ag2SbAs tetrahedra,  a cornercorner with one S(8)Ag2SbAs tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, corners with two equivalent S(1)Ag2Sb2 tetrahedra, and corners with two equivalent S(7)Ag2Sb2 tetrahedra. In the fifth S site, S(5) is bonded to one Ag(2), one Ag(7), one Sb(1), and one As(2) atom to form distorted SAg2SbAs tetrahedra that share  a cornercorner with one S(1)Ag2Sb2 tetrahedra,  a cornercorner with one S(4)Ag2Sb2 tetrahedra, and  a cornercorner with one S(11)Ag3As tetrahedra. In the sixth S site, S(6) is bonded to one Ag(1), one Ag(8), one Sb(2), and one As(3) atom to form distorted SAg2SbAs tetrahedra that share  a cornercorner with one S(3)Ag2Sb2 tetrahedra,  a cornercorner with one S(11)Ag3As tetrahedra, corners with two equivalent S(1)Ag2Sb2 tetrahedra, and corners with two equivalent S(9)Ag3As tetrahedra. In the seventh S site, S(7) is bonded to one Ag(4), one Ag(5), one Sb(3), and one Sb(5) atom to form SAg2Sb2 tetrahedra that share  a cornercorner with one S(3)Ag2Sb2 tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, and corners with two equivalent S(4)Ag2Sb2 tetrahedra. In the eighth S site, S(8) is bonded to one Ag(3), one Ag(6), one Sb(4), and one As(1) atom to form distorted SAg2SbAs tetrahedra that share  a cornercorner with one S(1)Ag2Sb2 tetrahedra,  a cornercorner with one S(4)Ag2Sb2 tetrahedra,  a cornercorner with one S(9)Ag3As tetrahedra, corners with two equivalent S(3)Ag2Sb2 tetrahedra, and corners with two equivalent S(11)Ag3As tetrahedra. In the ninth S site, S(9) is bonded to one Ag(1), one Ag(3), one Ag(5), and one As(3) atom to form distorted SAg3As tetrahedra that share  a cornercorner with one S(1)Ag2Sb2 tetrahedra,  a cornercorner with one S(3)Ag2Sb2 tetrahedra,  a cornercorner with one S(4)Ag2Sb2 tetrahedra,  a cornercorner with one S(7)Ag2Sb2 tetrahedra,  a cornercorner with one S(8)Ag2SbAs tetrahedra, corners with two equivalent S(6)Ag2SbAs tetrahedra, and  an edgeedge with one S(11)Ag3As tetrahedra. In the tenth S site, S(10) is bonded in a 4-coordinate geometry to one Ag(2), one Ag(4), one Ag(6), and one As(2) atom. In the eleventh S site, S(11) is bonded to one Ag(1), one Ag(3), one Ag(7), and one As(1) atom to form distorted SAg3As tetrahedra that share  a cornercorner with one S(1)Ag2Sb2 tetrahedra,  a cornercorner with one S(3)Ag2Sb2 tetrahedra,  a cornercorner with one S(5)Ag2SbAs tetrahedra,  a cornercorner with one S(6)Ag2SbAs tetrahedra, corners with two equivalent S(8)Ag2SbAs tetrahedra, and  an edgeedge with one S(9)Ag3As tetrahedra. In the twelfth S site, S(12) is bonded in a 5-coordinate geometry to one Ag(2), one Ag(4), one Ag(8), one Sb(1), and one Sb(5) atom. In the thirteenth S site, S(13) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(5), one Sb(1), and one Sb(5) atom. In the fourteenth S site, S(14) is bonded in a 3-coordinate geometry to one Ag(6), one Sb(2), and one As(1) atom. In the fifteenth S site, S(15) is bonded in a distorted trigonal non-coplanar geometry to one Ag(7), one Sb(3), and one As(2) atom. In the sixteenth S site, S(16) is bonded in a 3-coordinate geometry to one Ag(8), one Sb(4), and one As(3) atom.