Na5LaO4 is Hausmannite-derived structured and crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. In the second Na site, Na(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form NaO4 tetrahedra that share corners with four equivalent La(1)O4 tetrahedra. La(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form LaO4 tetrahedra that share corners with four equivalent Na(2)O4 tetrahedra. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Na(2), four equivalent Na(1), and one La(1) atom to form a mixture of corner and edge-sharing ONa5La octahedra. The corner-sharing octahedral tilt angles range from 61-64°. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Na(2), four equivalent Na(1), and one La(1) atom.
Na5LaO4 is Hausmannite-derived structured and crystallizes in the orthorhombic Pmmn space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to two equivalent O(1) and two equivalent O(2) atoms. There is one shorter (2.38 Å) and one longer (2.50 Å) Na(1)-O(1) bond length. There is one shorter (2.31 Å) and one longer (2.74 Å) Na(1)-O(2) bond length. In the second Na site, Na(2) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form NaO4 tetrahedra that share corners with four equivalent La(1)O4 tetrahedra. Both Na(2)-O(1) bond lengths are 2.45 Å. Both Na(2)-O(2) bond lengths are 2.34 Å. La(1) is bonded to two equivalent O(1) and two equivalent O(2) atoms to form LaO4 tetrahedra that share corners with four equivalent Na(2)O4 tetrahedra. Both La(1)-O(1) bond lengths are 2.31 Å. Both La(1)-O(2) bond lengths are 2.25 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Na(2), four equivalent Na(1), and one La(1) atom to form a mixture of corner and edge-sharing ONa5La octahedra. The corner-sharing octahedral tilt angles range from 61-64°. In the second O site, O(2) is bonded in a 6-coordinate geometry to one Na(2), four equivalent Na(1), and one La(1) atom.