NaEuTiNbO6F crystallizes in the orthorhombic Imma space group. Na(1) is bonded to two equivalent O(2), four equivalent O(3), and two equivalent F(1) atoms to form distorted NaO6F2 hexagonal bipyramids that share edges with two equivalent Na(1)O6F2 hexagonal bipyramids, edges with four equivalent Eu(1)O6F2 hexagonal bipyramids, edges with two equivalent Ti(1)O6 octahedra, and edges with four equivalent Nb(1)O6 octahedra. Eu(1) is bonded to two equivalent O(1), four equivalent O(3), and two equivalent F(1) atoms to form distorted EuO6F2 hexagonal bipyramids that share edges with two equivalent Eu(1)O6F2 hexagonal bipyramids, edges with four equivalent Na(1)O6F2 hexagonal bipyramids, edges with two equivalent Nb(1)O6 octahedra, and edges with four equivalent Ti(1)O6 octahedra. Ti(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form TiO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with four equivalent Nb(1)O6 octahedra, edges with two equivalent Na(1)O6F2 hexagonal bipyramids, and edges with four equivalent Eu(1)O6F2 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 45-47°. Nb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, edges with two equivalent Eu(1)O6F2 hexagonal bipyramids, and edges with four equivalent Na(1)O6F2 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 40-45°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Eu(1) and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Na(1) and two equivalent Nb(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Eu(1), one Ti(1), and one Nb(1) atom. F(1) is bonded to two equivalent Na(1) and two equivalent Eu(1) atoms to form corner-sharing FNa2Eu2 tetrahedra.
NaEuTiNbO6F crystallizes in the orthorhombic Imma space group. Na(1) is bonded to two equivalent O(2), four equivalent O(3), and two equivalent F(1) atoms to form distorted NaO6F2 hexagonal bipyramids that share edges with two equivalent Na(1)O6F2 hexagonal bipyramids, edges with four equivalent Eu(1)O6F2 hexagonal bipyramids, edges with two equivalent Ti(1)O6 octahedra, and edges with four equivalent Nb(1)O6 octahedra. Both Na(1)-O(2) bond lengths are 2.62 Å. All Na(1)-O(3) bond lengths are 2.70 Å. Both Na(1)-F(1) bond lengths are 2.21 Å. Eu(1) is bonded to two equivalent O(1), four equivalent O(3), and two equivalent F(1) atoms to form distorted EuO6F2 hexagonal bipyramids that share edges with two equivalent Eu(1)O6F2 hexagonal bipyramids, edges with four equivalent Na(1)O6F2 hexagonal bipyramids, edges with two equivalent Nb(1)O6 octahedra, and edges with four equivalent Ti(1)O6 octahedra. Both Eu(1)-O(1) bond lengths are 2.61 Å. All Eu(1)-O(3) bond lengths are 2.53 Å. Both Eu(1)-F(1) bond lengths are 2.30 Å. Ti(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form TiO6 octahedra that share corners with two equivalent Ti(1)O6 octahedra, corners with four equivalent Nb(1)O6 octahedra, edges with two equivalent Na(1)O6F2 hexagonal bipyramids, and edges with four equivalent Eu(1)O6F2 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 45-47°. Both Ti(1)-O(1) bond lengths are 1.97 Å. All Ti(1)-O(3) bond lengths are 1.97 Å. Nb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form NbO6 octahedra that share corners with two equivalent Nb(1)O6 octahedra, corners with four equivalent Ti(1)O6 octahedra, edges with two equivalent Eu(1)O6F2 hexagonal bipyramids, and edges with four equivalent Na(1)O6F2 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 40-45°. Both Nb(1)-O(2) bond lengths are 2.01 Å. All Nb(1)-O(3) bond lengths are 2.01 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Eu(1) and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Na(1) and two equivalent Nb(1) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Na(1), one Eu(1), one Ti(1), and one Nb(1) atom. F(1) is bonded to two equivalent Na(1) and two equivalent Eu(1) atoms to form corner-sharing FNa2Eu2 tetrahedra.