MgAg2(BiO3)2 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(3) and four equivalent O(2) atoms. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second Ag site, Ag(2) is bonded in a rectangular see-saw-like geometry to two equivalent O(3) and two equivalent O(4) atoms. Bi(1) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Ag(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Ag(1), and two equivalent Bi(1) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mg(1) and two equivalent Ag(2) atoms. In the fourth O site, O(4) is bonded to two equivalent Ag(2) and two equivalent Bi(1) atoms to form corner-sharing OAg2Bi2 tetrahedra.
MgAg2(BiO3)2 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(3) and four equivalent O(2) atoms. The Mg(1)-O(3) bond length is 1.94 Å. All Mg(1)-O(2) bond lengths are 2.19 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Ag(1)-O(1) bond lengths are 2.19 Å. Both Ag(1)-O(2) bond lengths are 2.25 Å. In the second Ag site, Ag(2) is bonded in a rectangular see-saw-like geometry to two equivalent O(3) and two equivalent O(4) atoms. Both Ag(2)-O(3) bond lengths are 2.07 Å. Both Ag(2)-O(4) bond lengths are 2.28 Å. Bi(1) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(2) atoms. The Bi(1)-O(4) bond length is 2.28 Å. Both Bi(1)-O(1) bond lengths are 2.20 Å. Both Bi(1)-O(2) bond lengths are 2.56 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Ag(1) and two equivalent Bi(1) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one Ag(1), and two equivalent Bi(1) atoms. In the third O site, O(3) is bonded in a trigonal planar geometry to one Mg(1) and two equivalent Ag(2) atoms. In the fourth O site, O(4) is bonded to two equivalent Ag(2) and two equivalent Bi(1) atoms to form corner-sharing OAg2Bi2 tetrahedra.