Ag2HgGeS4 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 Hg(1)S4 tetrahedra, and corners with four equivalent Ge(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 Hg(1)S4 tetrahedra, and corners with four equivalent Ge(1)S4 tetrahedra. Hg(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form HgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent Ge(1)S4 tetrahedra. Ge(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form GeS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent Hg(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 Hg(1), and one Ge(1) atom to form corner-sharing SAg2HgGe tetrahedra. In the second S site, S(2) is bonded to one Ag(1), one Ag(2), one Hg(1), and one Ge(1) atom to form corner-sharing SAg2HgGe tetrahedra. In the third S site, S(3) is bonded to one Ag(1), one Ag(2), one Hg(1), and one Ge(1) atom to form corner-sharing SAg2HgGe tetrahedra. In the fourth S site, S(4) is bonded to one Ag(1), one Ag(2), one Hg(1), and one Ge(1) atom to form corner-sharing SAg2HgGe tetrahedra.
Ag2HgGeS4 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 Hg(1)S4 tetrahedra, and corners with four equivalent Ge(1)S4 tetrahedra. The Ag(1)-S(1) bond length is 2.56 Å. The Ag(1)-S(2) bond length is 2.55 Å. The Ag(1)-S(3) bond length is 2.62 Å. The Ag(1)-S(4) bond length is 2.55 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 Hg(1)S4 tetrahedra, and corners with four equivalent Ge(1)S4 tetrahedra. The Ag(2)-S(1) bond length is 2.58 Å. The Ag(2)-S(2) bond length is 2.62 Å. The Ag(2)-S(3) bond length is 2.63 Å. The Ag(2)-S(4) bond length is 2.56 Å. Hg(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form HgS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent Ge(1)S4 tetrahedra. The Hg(1)-S(1) bond length is 2.59 Å. The Hg(1)-S(2) bond length is 2.64 Å. The Hg(1)-S(3) bond length is 2.58 Å. The Hg(1)-S(4) bond length is 2.60 Å. Ge(1) is bonded to one S(1), one S(2), one S(3), and one S(4) atom to form GeS4 tetrahedra that share corners with four equivalent Ag(1)S4 tetrahedra, corners with four equivalent Ag(2)S4 tetrahedra, and corners with four equivalent Hg(1)S4 tetrahedra. The Ge(1)-S(1) bond length is 2.26 Å. The Ge(1)-S(2) bond length is 2.26 Å. The Ge(1)-S(3) bond length is 2.27 Å. The Ge(1)-S(4) bond length is 2.26 Å. There are four inequivalent S sites. In the first S site, S(1) is bonded to one Ag(1), one Ag(2), one Hg(1), and one Ge(1) atom to form corner-sharing SAg2HgGe tetrahedra. In the second S site, S(2) is bonded to one Ag(1), one Ag(2), one Hg(1), and one Ge(1) atom to form corner-sharing SAg2HgGe tetrahedra. In the third S site, S(3) is bonded to one Ag(1), one Ag(2), one Hg(1), and one Ge(1) atom to form corner-sharing SAg2HgGe tetrahedra. In the fourth S site, S(4) is bonded to one Ag(1), one Ag(2), one Hg(1), and one Ge(1) atom to form corner-sharing SAg2HgGe tetrahedra.