Mg2PbO4 crystallizes in the orthorhombic Pbam space group. Mg(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. Pb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form edge-sharing PbO6 octahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Mg(1) and one Pb(1) atom to form a mixture of distorted corner and edge-sharing OMg4Pb square pyramids. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mg(1) and two equivalent Pb(1) atoms.
Mg2PbO4 crystallizes in the orthorhombic Pbam space group. Mg(1) is bonded in a 6-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There is one shorter (2.04 Å) and one longer (2.45 Å) Mg(1)-O(2) bond length. There are two shorter (2.17 Å) and two longer (2.30 Å) Mg(1)-O(1) bond lengths. Pb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form edge-sharing PbO6 octahedra. Both Pb(1)-O(1) bond lengths are 2.19 Å. All Pb(1)-O(2) bond lengths are 2.19 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to four equivalent Mg(1) and one Pb(1) atom to form a mixture of distorted corner and edge-sharing OMg4Pb square pyramids. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Mg(1) and two equivalent Pb(1) atoms.