Na2MgNd2Ti3O10 crystallizes in the tetragonal I4/mmm space group. Na(1) is bonded to five equivalent O(2) atoms to form a mixture of distorted edge and corner-sharing NaO5 square pyramids. Mg(1) is bonded in a square co-planar geometry to four equivalent O(3) atoms. Nd(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(4) atoms. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. In the second Ti site, Ti(2) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedra are not tilted. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Nd(1) and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded to five equivalent Na(1) and one Ti(1) atom to form a mixture of distorted edge and corner-sharing ONa5Ti octahedra. The corner-sharing octahedral tilt angles are 5°. In the third O site, O(3) is bonded in a square co-planar geometry to two equivalent Mg(1) and two equivalent Ti(2) atoms. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to four equivalent Nd(1) and one Ti(2) atom.
Na2MgNd2Ti3O10 crystallizes in the tetragonal I4/mmm space group. Na(1) is bonded to five equivalent O(2) atoms to form a mixture of distorted edge and corner-sharing NaO5 square pyramids. There is one shorter (2.29 Å) and four longer (2.77 Å) Na(1)-O(2) bond lengths. Mg(1) is bonded in a square co-planar geometry to four equivalent O(3) atoms. All Mg(1)-O(3) bond lengths are 1.96 Å. Nd(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(4) atoms. All Nd(1)-O(1) bond lengths are 2.40 Å. All Nd(1)-O(4) bond lengths are 2.92 Å. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 5-coordinate geometry to one O(2) and four equivalent O(1) atoms. The Ti(1)-O(2) bond length is 1.76 Å. All Ti(1)-O(1) bond lengths are 2.01 Å. In the second Ti site, Ti(2) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedra are not tilted. Both Ti(2)-O(4) bond lengths are 2.12 Å. All Ti(2)-O(3) bond lengths are 1.96 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Nd(1) and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded to five equivalent Na(1) and one Ti(1) atom to form a mixture of distorted edge and corner-sharing ONa5Ti octahedra. The corner-sharing octahedral tilt angles are 5°. In the third O site, O(3) is bonded in a square co-planar geometry to two equivalent Mg(1) and two equivalent Ti(2) atoms. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to four equivalent Nd(1) and one Ti(2) atom.