NaMgMoO3 crystallizes in the monoclinic Cm space group. Na(1) is bonded in a 3-coordinate geometry to one O(2) and two equivalent O(1) atoms. Mg(1) is bonded in a 3-coordinate geometry to one O(2) and two equivalent O(1) atoms. Mo(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles are 7°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Mg(1), and two equivalent Mo(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Mg(1), and two equivalent Mo(1) atoms.
NaMgMoO3 crystallizes in the monoclinic Cm space group. Na(1) is bonded in a 3-coordinate geometry to one O(2) and two equivalent O(1) atoms. The Na(1)-O(2) bond length is 2.34 Å. Both Na(1)-O(1) bond lengths are 2.33 Å. Mg(1) is bonded in a 3-coordinate geometry to one O(2) and two equivalent O(1) atoms. The Mg(1)-O(2) bond length is 1.96 Å. Both Mg(1)-O(1) bond lengths are 1.96 Å. Mo(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing MoO6 octahedra. The corner-sharing octahedral tilt angles are 7°. There is one shorter (2.14 Å) and one longer (2.25 Å) Mo(1)-O(2) bond length. There are two shorter (2.14 Å) and two longer (2.24 Å) Mo(1)-O(1) bond lengths. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Mg(1), and two equivalent Mo(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Na(1), one Mg(1), and two equivalent Mo(1) atoms.