NdCeAl2O6 crystallizes in the monoclinic Cm space group. Nd(1) is bonded in a 12-coordinate geometry to two equivalent O(3), two equivalent O(4), four equivalent O(1), and four equivalent O(2) atoms. Ce(1) is bonded in a 12-coordinate geometry to two equivalent O(3), two equivalent O(4), four equivalent O(1), and four equivalent O(2) atoms. Al(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles range from 8-19°. 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), two equivalent Ce(1), and two equivalent Al(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Ce(1), and two equivalent Al(1) atoms. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Ce(1), and two equivalent Al(1) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Ce(1), and two equivalent Al(1) atoms.
NdCeAl2O6 crystallizes in the monoclinic Cm space group. Nd(1) is bonded in a 12-coordinate geometry to two equivalent O(3), two equivalent O(4), four equivalent O(1), and four equivalent O(2) atoms. There is one shorter (2.42 Å) and one longer (2.98 Å) Nd(1)-O(3) bond length. There is one shorter (2.57 Å) and one longer (2.81 Å) Nd(1)-O(4) bond length. There are two shorter (2.48 Å) and two longer (2.91 Å) Nd(1)-O(1) bond lengths. There are two shorter (2.58 Å) and two longer (2.78 Å) Nd(1)-O(2) bond lengths. Ce(1) is bonded in a 12-coordinate geometry to two equivalent O(3), two equivalent O(4), four equivalent O(1), and four equivalent O(2) atoms. There is one shorter (2.59 Å) and one longer (2.80 Å) Ce(1)-O(3) bond length. There is one shorter (2.43 Å) and one longer (2.97 Å) Ce(1)-O(4) bond length. There are two shorter (2.50 Å) and two longer (2.89 Å) Ce(1)-O(1) bond lengths. There are two shorter (2.59 Å) and two longer (2.77 Å) Ce(1)-O(2) bond lengths. Al(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing AlO6 octahedra. The corner-sharing octahedral tilt angles range from 8-19°. The Al(1)-O(3) bond length is 1.92 Å. The Al(1)-O(4) bond length is 1.92 Å. Both Al(1)-O(1) bond lengths are 1.91 Å. Both Al(1)-O(2) bond lengths are 1.91 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), two equivalent Ce(1), and two equivalent Al(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Ce(1), and two equivalent Al(1) atoms. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Ce(1), and two equivalent Al(1) atoms. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to two equivalent Nd(1), two equivalent Ce(1), and two equivalent Al(1) atoms.