Na5MgSbO5 crystallizes in the triclinic P1 space group. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one O(1), one O(3), one O(4), and one O(5) atom. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(4), and one O(5) atom. In the third Na site, Na(3) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. In the fourth Na site, Na(4) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(4), and one O(5) atom. In the fifth Na site, Na(5) is bonded in a T-shaped geometry to one O(2), one O(3), and one O(4) atom. Mg(1) is bonded in a distorted tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. Sb(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(4), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), one Na(4), one Mg(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a distorted trigonal bipyramidal geometry to one Na(2), one Na(3), one Na(4), one Na(5), and one Sb(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(5), and one Mg(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Na(1), one Na(2), one Na(4), one Na(5), one Mg(1), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(4), one Mg(1), and one Sb(1) atom.
Na5MgSbO5 crystallizes in the triclinic P1 space group. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one O(1), one O(3), one O(4), and one O(5) atom. The Na(1)-O(1) bond length is 2.38 Å. The Na(1)-O(3) bond length is 2.48 Å. The Na(1)-O(4) bond length is 2.54 Å. The Na(1)-O(5) bond length is 2.36 Å. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(2), one O(3), one O(4), and one O(5) atom. The Na(2)-O(2) bond length is 2.49 Å. The Na(2)-O(3) bond length is 2.33 Å. The Na(2)-O(4) bond length is 2.38 Å. The Na(2)-O(5) bond length is 2.81 Å. In the third Na site, Na(3) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(2), and one O(3) atom. The Na(3)-O(1) bond length is 2.30 Å. The Na(3)-O(2) bond length is 2.33 Å. The Na(3)-O(3) bond length is 2.42 Å. In the fourth Na site, Na(4) is bonded in a distorted see-saw-like geometry to one O(1), one O(2), one O(4), and one O(5) atom. The Na(4)-O(1) bond length is 2.26 Å. The Na(4)-O(2) bond length is 2.44 Å. The Na(4)-O(4) bond length is 2.23 Å. The Na(4)-O(5) bond length is 2.46 Å. In the fifth Na site, Na(5) is bonded in a T-shaped geometry to one O(2), one O(3), and one O(4) atom. The Na(5)-O(2) bond length is 2.42 Å. The Na(5)-O(3) bond length is 2.28 Å. The Na(5)-O(4) bond length is 2.24 Å. Mg(1) is bonded in a distorted tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. The Mg(1)-O(1) bond length is 2.10 Å. The Mg(1)-O(3) bond length is 1.98 Å. The Mg(1)-O(4) bond length is 1.96 Å. The Mg(1)-O(5) bond length is 2.03 Å. Sb(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(4), and one O(5) atom. The Sb(1)-O(1) bond length is 2.04 Å. The Sb(1)-O(2) bond length is 2.00 Å. The Sb(1)-O(4) bond length is 2.65 Å. The Sb(1)-O(5) bond length is 2.00 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Na(1), one Na(3), one Na(4), one Mg(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a distorted trigonal bipyramidal geometry to one Na(2), one Na(3), one Na(4), one Na(5), and one Sb(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(3), one Na(5), and one Mg(1) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Na(1), one Na(2), one Na(4), one Na(5), one Mg(1), and one Sb(1) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), one Na(4), one Mg(1), and one Sb(1) atom.