Ag2SeO4 crystallizes in the triclinic P1 space group. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(8) atom. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and one O(7) atom. In the third Ag site, Ag(3) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom. In the fourth Ag site, Ag(4) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second Se site, Se(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), and one Se(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(2), one Ag(4), and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ag(1), one Ag(3), and one Se(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(2), one Ag(4), and one Se(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(3), one Ag(4), and one Se(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ag(2), one Ag(3), one Ag(4), and one Se(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ag(2), one Ag(3), one Ag(4), and one Se(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(3), one Ag(4), and one Se(2) atom.
Ag2SeO4 crystallizes in the triclinic P1 space group. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(8) atom. The Ag(1)-O(1) bond length is 2.62 Å. The Ag(1)-O(2) bond length is 2.81 Å. The Ag(1)-O(3) bond length is 2.55 Å. The Ag(1)-O(4) bond length is 2.81 Å. The Ag(1)-O(5) bond length is 2.32 Å. The Ag(1)-O(8) bond length is 2.42 Å. In the second Ag site, Ag(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), one O(6), and one O(7) atom. The Ag(2)-O(1) bond length is 2.78 Å. The Ag(2)-O(2) bond length is 2.62 Å. The Ag(2)-O(4) bond length is 2.62 Å. The Ag(2)-O(6) bond length is 2.41 Å. The Ag(2)-O(7) bond length is 2.25 Å. In the third Ag site, Ag(3) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(5), one O(6), one O(7), and one O(8) atom. The Ag(3)-O(1) bond length is 2.38 Å. The Ag(3)-O(3) bond length is 2.33 Å. The Ag(3)-O(5) bond length is 2.65 Å. The Ag(3)-O(6) bond length is 2.75 Å. The Ag(3)-O(7) bond length is 2.84 Å. The Ag(3)-O(8) bond length is 2.52 Å. In the fourth Ag site, Ag(4) is bonded in a 6-coordinate geometry to one O(2), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. The Ag(4)-O(2) bond length is 2.33 Å. The Ag(4)-O(4) bond length is 2.32 Å. The Ag(4)-O(5) bond length is 2.69 Å. The Ag(4)-O(6) bond length is 2.59 Å. The Ag(4)-O(7) bond length is 2.61 Å. The Ag(4)-O(8) bond length is 2.72 Å. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The Se(1)-O(1) bond length is 1.70 Å. The Se(1)-O(2) bond length is 1.70 Å. The Se(1)-O(3) bond length is 1.69 Å. The Se(1)-O(4) bond length is 1.66 Å. In the second Se site, Se(2) is bonded in a tetrahedral geometry to one O(5), one O(6), one O(7), and one O(8) atom. The Se(2)-O(5) bond length is 1.72 Å. The Se(2)-O(6) bond length is 1.66 Å. The Se(2)-O(7) bond length is 1.72 Å. The Se(2)-O(8) bond length is 1.70 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(2), one Ag(3), and one Se(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(2), one Ag(4), and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ag(1), one Ag(3), and one Se(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(2), one Ag(4), and one Se(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(3), one Ag(4), and one Se(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Ag(2), one Ag(3), one Ag(4), and one Se(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Ag(2), one Ag(3), one Ag(4), and one Se(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Ag(1), one Ag(3), one Ag(4), and one Se(2) atom.