MgGa4(CuO4)2 crystallizes in the orthorhombic Imm2 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. Cu(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a tetrahedral geometry to two equivalent O(3) and two equivalent O(4) atoms. In the second Ga site, Ga(2) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. In the third Ga site, Ga(3) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Ga(2) and two equivalent Ga(3) atoms. In the second O site, O(2) is bonded to one Mg(1), two equivalent Cu(1), and one Ga(2) atom to form distorted edge-sharing OMgGaCu2 tetrahedra. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to two equivalent Cu(1), one Ga(1), and one Ga(3) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Ga(1), and two equivalent Ga(3) atoms.
MgGa4(CuO4)2 crystallizes in the orthorhombic Imm2 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. Both Mg(1)-O(2) bond lengths are 1.94 Å. Both Mg(1)-O(4) bond lengths are 1.97 Å. Cu(1) is bonded in a rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(3) atoms. Both Cu(1)-O(2) bond lengths are 2.06 Å. Both Cu(1)-O(3) bond lengths are 2.14 Å. There are three inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a tetrahedral geometry to two equivalent O(3) and two equivalent O(4) atoms. Both Ga(1)-O(3) bond lengths are 1.94 Å. Both Ga(1)-O(4) bond lengths are 1.98 Å. In the second Ga site, Ga(2) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Ga(2)-O(1) bond lengths are 1.87 Å. Both Ga(2)-O(2) bond lengths are 1.90 Å. In the third Ga site, Ga(3) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(4) atoms. The Ga(3)-O(3) bond length is 1.94 Å. Both Ga(3)-O(1) bond lengths are 1.97 Å. Both Ga(3)-O(4) bond lengths are 2.18 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Ga(2) and two equivalent Ga(3) atoms. In the second O site, O(2) is bonded to one Mg(1), two equivalent Cu(1), and one Ga(2) atom to form distorted edge-sharing OMgGaCu2 tetrahedra. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to two equivalent Cu(1), one Ga(1), and one Ga(3) atom. In the fourth O site, O(4) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Ga(1), and two equivalent Ga(3) atoms.