Ag2HgSnS4 is Stannite-like structured and crystallizes in the orthorhombic Pmn2_1 space group. Ag(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form AgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Hg(1)S4 tetrahedra, and corners with four equivalent Sn(1)S4 tetrahedra. Hg(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form HgS4 tetrahedra that share corners with four equivalent Sn(1)S4 tetrahedra and corners with eight equivalent Ag(1)S4 tetrahedra. Sn(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form SnS4 tetrahedra that share corners with four equivalent Hg(1)S4 tetrahedra and corners with eight equivalent Ag(1)S4 tetrahedra. There are three inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Ag(1), one Hg(1), and one Sn(1) atom to form corner-sharing SAg2SnHg tetrahedra. In the second S site, S(2) is bonded to two equivalent Ag(1), one Hg(1), and one Sn(1) atom to form corner-sharing SAg2SnHg tetrahedra. In the third S site, S(3) is bonded to two equivalent Ag(1), one Hg(1), and one Sn(1) atom to form corner-sharing SAg2SnHg tetrahedra.
Ag2HgSnS4 is Stannite-like structured and crystallizes in the orthorhombic Pmn2_1 space group. Ag(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form AgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Hg(1)S4 tetrahedra, and corners with four equivalent Sn(1)S4 tetrahedra. The Ag(1)-S(1) bond length is 2.60 Å. The Ag(1)-S(3) bond length is 2.56 Å. There is one shorter (2.55 Å) and one longer (2.61 Å) Ag(1)-S(2) bond length. Hg(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form HgS4 tetrahedra that share corners with four equivalent Sn(1)S4 tetrahedra and corners with eight equivalent Ag(1)S4 tetrahedra. The Hg(1)-S(1) bond length is 2.58 Å. The Hg(1)-S(3) bond length is 2.59 Å. Both Hg(1)-S(2) bond lengths are 2.66 Å. Sn(1) is bonded to one S(1), one S(3), and two equivalent S(2) atoms to form SnS4 tetrahedra that share corners with four equivalent Hg(1)S4 tetrahedra and corners with eight equivalent Ag(1)S4 tetrahedra. The Sn(1)-S(1) bond length is 2.44 Å. The Sn(1)-S(3) bond length is 2.45 Å. Both Sn(1)-S(2) bond lengths are 2.45 Å. There are three inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Ag(1), one Hg(1), and one Sn(1) atom to form corner-sharing SAg2SnHg tetrahedra. In the second S site, S(2) is bonded to two equivalent Ag(1), one Hg(1), and one Sn(1) atom to form corner-sharing SAg2SnHg tetrahedra. In the third S site, S(3) is bonded to two equivalent Ag(1), one Hg(1), and one Sn(1) atom to form corner-sharing SAg2SnHg tetrahedra.