Ag2ZnSiS4 is Stannite-like structured and crystallizes in the monoclinic Pc space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form AgS4 tetrahedra that share corners with four equivalent Ag(2)S4 tetrahedra, corners with four equivalent Zn(1)S4 tetrahedra, and corners with four equivalent Si(1)S4 tetrahedra. In the second Ag site, Ag(2) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form AgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Zn(1)S4 tetrahedra, and corners with four equivalent Si(1)S4 tetrahedra. Zn(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form ZnS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent Si(1)S4 tetrahedra. Si(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form SiS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent Zn(1)S4 tetrahedra. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Ag(2), one Zn(1), and one Si(1) atom to form corner-sharing SZnSiAg2 tetrahedra. In the second S site, S(2) is bonded to one Ag(1), one Ag(2), one Zn(1), and one Si(1) atom to form corner-sharing SZnSiAg2 tetrahedra. In the third S site, S(3) is bonded to one Ag(1), one Ag(2), one Zn(1), and one Si(1) atom to form distorted corner-sharing SZnSiAg2 tetrahedra. In the fourth S site, S(4) is bonded to one Ag(1), one Ag(2), one Zn(1), and one Si(1) atom to form corner-sharing SZnSiAg2 tetrahedra.
Ag2ZnSiS4 is Stannite-like structured and crystallizes in the monoclinic Pc space group. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form AgS4 tetrahedra that share corners with four equivalent Ag(2)S4 tetrahedra, corners with four equivalent Zn(1)S4 tetrahedra, and corners with four equivalent Si(1)S4 tetrahedra. The Ag(1)-S(1) bond length is 2.54 Å. The Ag(1)-S(2) bond length is 2.58 Å. The Ag(1)-S(3) bond length is 2.54 Å. The Ag(1)-S(4) bond length is 2.51 Å. In the second Ag site, Ag(2) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form AgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Zn(1)S4 tetrahedra, and corners with four equivalent Si(1)S4 tetrahedra. The Ag(2)-S(1) bond length is 2.54 Å. The Ag(2)-S(2) bond length is 2.57 Å. The Ag(2)-S(3) bond length is 2.56 Å. The Ag(2)-S(4) bond length is 2.61 Å. Zn(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form ZnS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent Si(1)S4 tetrahedra. The Zn(1)-S(1) bond length is 2.33 Å. The Zn(1)-S(2) bond length is 2.35 Å. The Zn(1)-S(3) bond length is 2.33 Å. The Zn(1)-S(4) bond length is 2.36 Å. Si(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form SiS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent Zn(1)S4 tetrahedra. The Si(1)-S(1) bond length is 2.14 Å. The Si(1)-S(2) bond length is 2.13 Å. The Si(1)-S(3) bond length is 2.13 Å. The Si(1)-S(4) bond length is 2.14 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Ag(2), one Zn(1), and one Si(1) atom to form corner-sharing SZnSiAg2 tetrahedra. In the second S site, S(2) is bonded to one Ag(1), one Ag(2), one Zn(1), and one Si(1) atom to form corner-sharing SZnSiAg2 tetrahedra. In the third S site, S(3) is bonded to one Ag(1), one Ag(2), one Zn(1), and one Si(1) atom to form distorted corner-sharing SZnSiAg2 tetrahedra. In the fourth S site, S(4) is bonded to one Ag(1), one Ag(2), one Zn(1), and one Si(1) atom to form corner-sharing SZnSiAg2 tetrahedra.