MgEu2Ti2O6 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Eu(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Ti(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 1-15°. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Eu(1), and two equivalent Ti(1) atoms to form a mixture of distorted face, corner, and edge-sharing OEu2MgTi2 trigonal bipyramids. In the second O site, O(2) is bonded to one Mg(1), two equivalent Eu(1), and two equivalent Ti(1) atoms to form a mixture of distorted face, corner, and edge-sharing OEu2MgTi2 trigonal bipyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Eu(1) and two equivalent Ti(1) atoms.
MgEu2Ti2O6 crystallizes in the monoclinic C2/m space group. Mg(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Mg(1)-O(1) bond lengths are 1.99 Å. Both Mg(1)-O(2) bond lengths are 2.01 Å. Eu(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Both Eu(1)-O(1) bond lengths are 2.58 Å. There is one shorter (2.56 Å) and one longer (2.63 Å) Eu(1)-O(2) bond length. Both Eu(1)-O(3) bond lengths are 2.51 Å. Ti(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles range from 1-15°. Both Ti(1)-O(1) bond lengths are 2.02 Å. Both Ti(1)-O(2) bond lengths are 2.01 Å. Both Ti(1)-O(3) bond lengths are 2.21 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Mg(1), two equivalent Eu(1), and two equivalent Ti(1) atoms to form a mixture of distorted face, corner, and edge-sharing OEu2MgTi2 trigonal bipyramids. In the second O site, O(2) is bonded to one Mg(1), two equivalent Eu(1), and two equivalent Ti(1) atoms to form a mixture of distorted face, corner, and edge-sharing OEu2MgTi2 trigonal bipyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Eu(1) and two equivalent Ti(1) atoms.