MgV2Ag2(HgO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted see-saw-like geometry to one Hg(1), one O(1), one O(2), one O(6), and one O(8) atom. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(4), one O(5), and one O(8) atom to form VO4 tetrahedra that share corners with three equivalent Ag(2)O5 trigonal bipyramids. In the second V site, V(2) is bonded to one O(2), one O(3), one O(6), and one O(7) atom to form VO4 tetrahedra that share corners with two equivalent Ag(2)O5 trigonal bipyramids. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one O(1), one O(3), one O(4), and one O(7) atom. In the second Ag site, Ag(2) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(8) atom to form AgO5 trigonal bipyramids that share corners with two equivalent V(2)O4 tetrahedra and corners with three equivalent V(1)O4 tetrahedra. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted single-bond geometry to one Mg(1) atom. In the second Hg site, Hg(2) is bonded in a linear geometry to one O(5) and one O(6) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Ag(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one Ag(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(2), one Ag(1), and one Ag(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one Ag(1), and one Ag(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(1), one Ag(2), and one Hg(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one Hg(2) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one V(2) and one Ag(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Ag(2) atom.
MgV2Ag2(HgO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted see-saw-like geometry to one Hg(1), one O(1), one O(2), one O(6), and one O(8) atom. The Mg(1)-Hg(1) bond length is 2.80 Å. The Mg(1)-O(1) bond length is 2.00 Å. The Mg(1)-O(2) bond length is 2.04 Å. The Mg(1)-O(6) bond length is 2.09 Å. The Mg(1)-O(8) bond length is 2.11 Å. There are two inequivalent V sites. In the first V site, V(1) is bonded to one O(1), one O(4), one O(5), and one O(8) atom to form VO4 tetrahedra that share corners with three equivalent Ag(2)O5 trigonal bipyramids. The V(1)-O(1) bond length is 1.75 Å. The V(1)-O(4) bond length is 1.72 Å. The V(1)-O(5) bond length is 1.82 Å. The V(1)-O(8) bond length is 1.75 Å. In the second V site, V(2) is bonded to one O(2), one O(3), one O(6), and one O(7) atom to form VO4 tetrahedra that share corners with two equivalent Ag(2)O5 trigonal bipyramids. The V(2)-O(2) bond length is 1.76 Å. The V(2)-O(3) bond length is 1.73 Å. The V(2)-O(6) bond length is 1.86 Å. The V(2)-O(7) bond length is 1.70 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one O(1), one O(3), one O(4), and one O(7) atom. The Ag(1)-O(1) bond length is 2.40 Å. The Ag(1)-O(3) bond length is 2.25 Å. The Ag(1)-O(4) bond length is 2.65 Å. The Ag(1)-O(7) bond length is 2.26 Å. In the second Ag site, Ag(2) is bonded to one O(2), one O(3), one O(4), one O(5), and one O(8) atom to form AgO5 trigonal bipyramids that share corners with two equivalent V(2)O4 tetrahedra and corners with three equivalent V(1)O4 tetrahedra. The Ag(2)-O(2) bond length is 2.36 Å. The Ag(2)-O(3) bond length is 2.35 Å. The Ag(2)-O(4) bond length is 2.40 Å. The Ag(2)-O(5) bond length is 2.68 Å. The Ag(2)-O(8) bond length is 2.51 Å. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted single-bond geometry to one Mg(1) atom. In the second Hg site, Hg(2) is bonded in a linear geometry to one O(5) and one O(6) atom. The Hg(2)-O(5) bond length is 2.04 Å. The Hg(2)-O(6) bond length is 2.06 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Ag(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one Ag(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(2), one Ag(1), and one Ag(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one V(1), one Ag(1), and one Ag(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one V(1), one Ag(2), and one Hg(2) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one Mg(1), one V(2), and one Hg(2) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one V(2) and one Ag(1) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Mg(1), one V(1), and one Ag(2) atom.