Ag2AsS2 crystallizes in the monoclinic Pc space group. There are eight inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(3), one S(6), and two equivalent S(1) atoms to form corner-sharing AgS4 tetrahedra. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one S(2), one S(3), and two equivalent S(7) atoms. In the third Ag site, Ag(3) is bonded to one S(4), one S(8), and two equivalent S(2) atoms to form distorted AgS4 tetrahedra that share corners with two equivalent Ag(3)S4 tetrahedra and corners with three equivalent As(4)AgAsS2 tetrahedra. In the fourth Ag site, Ag(4) is bonded in a 5-coordinate geometry to one As(3), one As(4), one S(3), and two equivalent S(8) atoms. In the fifth Ag site, Ag(5) is bonded in a 4-coordinate geometry to one As(1), one S(4), and two equivalent S(6) atoms. In the sixth Ag site, Ag(6) is bonded in a 4-coordinate geometry to one S(2), one S(3), one S(5), and one S(7) atom. In the seventh Ag site, Ag(7) is bonded in a linear geometry to two equivalent S(5) atoms. In the eighth Ag site, Ag(8) is bonded in a 3-coordinate geometry to one S(1), one S(3), and one S(4) atom. There are four inequivalent As sites. In the first As site, As(1) is bonded in a 4-coordinate geometry to one Ag(5), one As(3), one S(1), and one S(3) atom. In the second As site, As(2) is bonded in a distorted water-like geometry to one As(4), one S(5), and one S(6) atom. In the third As site, As(3) is bonded in a distorted water-like geometry to one Ag(4), one As(1), one S(7), and one S(8) atom. In the fourth As site, As(4) is bonded to one Ag(4), one As(2), one S(2), and one S(4) atom to form distorted AsAgAsS2 tetrahedra that share  a cornercorner with one S(6)Ag3As tetrahedra, corners with two equivalent S(8)Ag3As tetrahedra, and corners with three equivalent Ag(3)S4 tetrahedra. There are eight inequivalent S sites. In the first S site, S(1) is bonded to one Ag(8), two equivalent Ag(1), and one As(1) atom to form corner-sharing SAg3As trigonal pyramids. In the second S site, S(2) is bonded to one Ag(2), one Ag(6), two equivalent Ag(3), and one As(4) atom to form distorted SAg4As trigonal bipyramids that share corners with two equivalent S(8)Ag3As tetrahedra, corners with three equivalent S(4)Ag3As tetrahedra, corners with three equivalent S(7)Ag3As tetrahedra, and corners with two equivalent S(2)Ag4As trigonal bipyramids. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Ag(1), one Ag(2), one Ag(4), one Ag(6), one Ag(8), and one As(1) atom. In the fourth S site, S(4) is bonded to one Ag(3), one Ag(5), one Ag(8), and one As(4) atom to form SAg3As tetrahedra that share  a cornercorner with one S(8)Ag3As tetrahedra, corners with two equivalent S(6)Ag3As tetrahedra, corners with three equivalent S(2)Ag4As trigonal bipyramids, and  a cornercorner with one S(1)Ag3As trigonal pyramid. In the fifth S site, S(5) is bonded in a distorted rectangular see-saw-like geometry to one Ag(6), two equivalent Ag(7), and one As(2) atom. In the sixth S site, S(6) is bonded to one Ag(1), two equivalent Ag(5), and one As(2) atom to form SAg3As tetrahedra that share  a cornercorner with one As(4)AgAsS2 tetrahedra, corners with two equivalent S(4)Ag3As tetrahedra, corners with two equivalent S(6)Ag3As tetrahedra, and corners with two equivalent S(1)Ag3As trigonal pyramids. In the seventh S site, S(7) is bonded to one Ag(6), two equivalent Ag(2), and one As(3) atom to form SAg3As tetrahedra that share  a cornercorner with one S(8)Ag3As tetrahedra, corners with two equivalent S(7)Ag3As tetrahedra, and corners with three equivalent S(2)Ag4As trigonal bipyramids. In the eighth S site, S(8) is bonded to one Ag(3), two equivalent Ag(4), and one As(3) atom to form SAg3As tetrahedra that share  a cornercorner with one S(4)Ag3As tetrahedra,  a cornercorner with one S(7)Ag3As tetrahedra, corners with two equivalent As(4)AgAsS2 tetrahedra, corners with two equivalent S(8)Ag3As tetrahedra, and corners with two equivalent S(2)Ag4As trigonal bipyramids.
Ag2AsS2 crystallizes in the monoclinic Pc space group. There are eight inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(3), one S(6), and two equivalent S(1) atoms to form corner-sharing AgS4 tetrahedra. The Ag(1)-S(3) bond length is 2.64 Å. The Ag(1)-S(6) bond length is 2.69 Å. There is one shorter (2.58 Å) and one longer (2.65 Å) Ag(1)-S(1) bond length. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one S(2), one S(3), and two equivalent S(7) atoms. The Ag(2)-S(2) bond length is 2.68 Å. The Ag(2)-S(3) bond length is 2.72 Å. There is one shorter (2.61 Å) and one longer (2.70 Å) Ag(2)-S(7) bond length. In the third Ag site, Ag(3) is bonded to one S(4), one S(8), and two equivalent S(2) atoms to form distorted AgS4 tetrahedra that share corners with two equivalent Ag(3)S4 tetrahedra and corners with three equivalent As(4)AgAsS2 tetrahedra. The Ag(3)-S(4) bond length is 2.66 Å. The Ag(3)-S(8) bond length is 2.61 Å. There is one shorter (2.62 Å) and one longer (2.70 Å) Ag(3)-S(2) bond length. In the fourth Ag site, Ag(4) is bonded in a 5-coordinate geometry to one As(3), one As(4), one S(3), and two equivalent S(8) atoms. The Ag(4)-As(3) bond length is 3.15 Å. The Ag(4)-As(4) bond length is 2.80 Å. The Ag(4)-S(3) bond length is 2.56 Å. There is one shorter (2.55 Å) and one longer (2.69 Å) Ag(4)-S(8) bond length. In the fifth Ag site, Ag(5) is bonded in a 4-coordinate geometry to one As(1), one S(4), and two equivalent S(6) atoms. The Ag(5)-As(1) bond length is 2.75 Å. The Ag(5)-S(4) bond length is 2.54 Å. There is one shorter (2.52 Å) and one longer (2.65 Å) Ag(5)-S(6) bond length. In the sixth Ag site, Ag(6) is bonded in a 4-coordinate geometry to one S(2), one S(3), one S(5), and one S(7) atom. The Ag(6)-S(2) bond length is 2.79 Å. The Ag(6)-S(3) bond length is 3.10 Å. The Ag(6)-S(5) bond length is 2.55 Å. The Ag(6)-S(7) bond length is 2.48 Å. In the seventh Ag site, Ag(7) is bonded in a linear geometry to two equivalent S(5) atoms. There is one shorter (2.43 Å) and one longer (2.46 Å) Ag(7)-S(5) bond length. In the eighth Ag site, Ag(8) is bonded in a 3-coordinate geometry to one S(1), one S(3), and one S(4) atom. The Ag(8)-S(1) bond length is 2.54 Å. The Ag(8)-S(3) bond length is 2.92 Å. The Ag(8)-S(4) bond length is 2.46 Å. There are four inequivalent As sites. In the first As site, As(1) is bonded in a 4-coordinate geometry to one Ag(5), one As(3), one S(1), and one S(3) atom. The As(1)-As(3) bond length is 2.57 Å. The As(1)-S(1) bond length is 2.28 Å. The As(1)-S(3) bond length is 2.29 Å. In the second As site, As(2) is bonded in a distorted water-like geometry to one As(4), one S(5), and one S(6) atom. The As(2)-As(4) bond length is 2.56 Å. The As(2)-S(5) bond length is 2.32 Å. The As(2)-S(6) bond length is 2.25 Å. In the third As site, As(3) is bonded in a distorted water-like geometry to one Ag(4), one As(1), one S(7), and one S(8) atom. The As(3)-S(7) bond length is 2.28 Å. The As(3)-S(8) bond length is 2.25 Å. In the fourth As site, As(4) is bonded to one Ag(4), one As(2), one S(2), and one S(4) atom to form distorted AsAgAsS2 tetrahedra that share  a cornercorner with one S(6)Ag3As tetrahedra, corners with two equivalent S(8)Ag3As tetrahedra, and corners with three equivalent Ag(3)S4 tetrahedra. The As(4)-S(2) bond length is 2.28 Å. The As(4)-S(4) bond length is 2.27 Å. There are eight inequivalent S sites. In the first S site, S(1) is bonded to one Ag(8), two equivalent Ag(1), and one As(1) atom to form corner-sharing SAg3As trigonal pyramids. In the second S site, S(2) is bonded to one Ag(2), one Ag(6), two equivalent Ag(3), and one As(4) atom to form distorted SAg4As trigonal bipyramids that share corners with two equivalent S(8)Ag3As tetrahedra, corners with three equivalent S(4)Ag3As tetrahedra, corners with three equivalent S(7)Ag3As tetrahedra, and corners with two equivalent S(2)Ag4As trigonal bipyramids. In the third S site, S(3) is bonded in a 6-coordinate geometry to one Ag(1), one Ag(2), one Ag(4), one Ag(6), one Ag(8), and one As(1) atom. In the fourth S site, S(4) is bonded to one Ag(3), one Ag(5), one Ag(8), and one As(4) atom to form SAg3As tetrahedra that share  a cornercorner with one S(8)Ag3As tetrahedra, corners with two equivalent S(6)Ag3As tetrahedra, corners with three equivalent S(2)Ag4As trigonal bipyramids, and  a cornercorner with one S(1)Ag3As trigonal pyramid. In the fifth S site, S(5) is bonded in a distorted rectangular see-saw-like geometry to one Ag(6), two equivalent Ag(7), and one As(2) atom. In the sixth S site, S(6) is bonded to one Ag(1), two equivalent Ag(5), and one As(2) atom to form SAg3As tetrahedra that share  a cornercorner with one As(4)AgAsS2 tetrahedra, corners with two equivalent S(4)Ag3As tetrahedra, corners with two equivalent S(6)Ag3As tetrahedra, and corners with two equivalent S(1)Ag3As trigonal pyramids. In the seventh S site, S(7) is bonded to one Ag(6), two equivalent Ag(2), and one As(3) atom to form SAg3As tetrahedra that share  a cornercorner with one S(8)Ag3As tetrahedra, corners with two equivalent S(7)Ag3As tetrahedra, and corners with three equivalent S(2)Ag4As trigonal bipyramids. In the eighth S site, S(8) is bonded to one Ag(3), two equivalent Ag(4), and one As(3) atom to form SAg3As tetrahedra that share  a cornercorner with one S(4)Ag3As tetrahedra,  a cornercorner with one S(7)Ag3As tetrahedra, corners with two equivalent As(4)AgAsS2 tetrahedra, corners with two equivalent S(8)Ag3As tetrahedra, and corners with two equivalent S(2)Ag4As trigonal bipyramids.