Ag3AsS4 is Enargite structured and crystallizes in the orthorhombic Pmn2_1 space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with four equivalent As(1)S4 tetrahedra and corners with eight equivalent Ag(2)S4 tetrahedra. In the second Ag site, Ag(2) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent As(1)S4 tetrahedra. As(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AsS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra and corners with eight equivalent Ag(2)S4 tetrahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), two equivalent Ag(2), and one As(1) atom to form corner-sharing SAg3As tetrahedra. In the second S site, S(2) is bonded to one Ag(1), two equivalent Ag(2), and one As(1) atom to form corner-sharing SAg3As tetrahedra. In the third S site, S(3) is bonded to one Ag(1), two equivalent Ag(2), and one As(1) atom to form corner-sharing SAg3As tetrahedra.
Ag3AsS4 is Enargite structured and crystallizes in the orthorhombic Pmn2_1 space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with four equivalent As(1)S4 tetrahedra and corners with eight equivalent Ag(2)S4 tetrahedra. The Ag(1)-S(2) bond length is 2.55 Å. The Ag(1)-S(3) bond length is 2.57 Å. Both Ag(1)-S(1) bond lengths are 2.57 Å. In the second Ag site, Ag(2) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent As(1)S4 tetrahedra. The Ag(2)-S(2) bond length is 2.56 Å. The Ag(2)-S(3) bond length is 2.53 Å. There is one shorter (2.51 Å) and one longer (2.56 Å) Ag(2)-S(1) bond length. As(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form AsS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra and corners with eight equivalent Ag(2)S4 tetrahedra. The As(1)-S(2) bond length is 2.19 Å. The As(1)-S(3) bond length is 2.19 Å. Both As(1)-S(1) bond lengths are 2.21 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), two equivalent Ag(2), and one As(1) atom to form corner-sharing SAg3As tetrahedra. In the second S site, S(2) is bonded to one Ag(1), two equivalent Ag(2), and one As(1) atom to form corner-sharing SAg3As tetrahedra. In the third S site, S(3) is bonded to one Ag(1), two equivalent Ag(2), and one As(1) atom to form corner-sharing SAg3As tetrahedra.