NaEuZr4O12 crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(3) and two equivalent O(5) atoms. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(1) atoms. Zr(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form corner-sharing ZrO6 octahedra. The corner-sharing octahedral tilt angles range from 24-35°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Eu(1) and two equivalent Zr(1) atoms. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Eu(1) and two equivalent Zr(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Na(1) and two equivalent Zr(1) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Eu(1) and two equivalent Zr(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Na(1) and two equivalent Zr(1) atoms.
NaEuZr4O12 crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(3) and two equivalent O(5) atoms. Both Na(1)-O(3) bond lengths are 2.35 Å. Both Na(1)-O(5) bond lengths are 2.31 Å. Eu(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(1) atoms. Both Eu(1)-O(2) bond lengths are 2.51 Å. Both Eu(1)-O(4) bond lengths are 2.55 Å. All Eu(1)-O(1) bond lengths are 2.39 Å. Zr(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form corner-sharing ZrO6 octahedra. The corner-sharing octahedral tilt angles range from 24-35°. The Zr(1)-O(2) bond length is 2.22 Å. The Zr(1)-O(3) bond length is 2.04 Å. The Zr(1)-O(4) bond length is 2.22 Å. The Zr(1)-O(5) bond length is 2.04 Å. There is one shorter (2.09 Å) and one longer (2.12 Å) Zr(1)-O(1) bond length. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Eu(1) and two equivalent Zr(1) atoms. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Eu(1) and two equivalent Zr(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Na(1) and two equivalent Zr(1) atoms. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Eu(1) and two equivalent Zr(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Na(1) and two equivalent Zr(1) atoms.