Na2MgCu2TeO6 crystallizes in the triclinic P-1 space group. Na(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. Mg(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. Cu(1) is bonded in a linear geometry to one O(1) and one O(3) atom. Te(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(1), one Cu(1), and one Te(1) atom to form a mixture of distorted corner and edge-sharing ONa2CuTe trigonal pyramids. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to two equivalent Na(1), one Mg(1), and one Te(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Mg(1), one Cu(1), and one Te(1) atom.
Na2MgCu2TeO6 crystallizes in the triclinic P-1 space group. Na(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(2) atoms. The Na(1)-O(3) bond length is 2.72 Å. There is one shorter (2.37 Å) and one longer (2.50 Å) Na(1)-O(1) bond length. There is one shorter (2.32 Å) and one longer (2.41 Å) Na(1)-O(2) bond length. Mg(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(3) atoms. Both Mg(1)-O(2) bond lengths are 2.00 Å. Both Mg(1)-O(3) bond lengths are 2.07 Å. Cu(1) is bonded in a linear geometry to one O(1) and one O(3) atom. The Cu(1)-O(1) bond length is 1.84 Å. The Cu(1)-O(3) bond length is 1.86 Å. Te(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Te(1)-O(1) bond lengths are 1.98 Å. Both Te(1)-O(2) bond lengths are 1.95 Å. Both Te(1)-O(3) bond lengths are 2.03 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Na(1), one Cu(1), and one Te(1) atom to form a mixture of distorted corner and edge-sharing ONa2CuTe trigonal pyramids. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to two equivalent Na(1), one Mg(1), and one Te(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1), one Mg(1), one Cu(1), and one Te(1) atom.