NaLaCr4O12 crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. La(1) is bonded in a 10-coordinate geometry to two equivalent O(2), four equivalent O(1), and four equivalent O(4) atoms. Cr(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 CrO6 octahedra. The corner-sharing octahedral tilt angles range from 16-29°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one La(1), and two equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(1), one La(1), and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1) and two equivalent Cr(1) atoms. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Cr(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Na(1) and two equivalent Cr(1) atoms.
NaLaCr4O12 crystallizes in the orthorhombic Amm2 space group. Na(1) is bonded in a 4-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. Both Na(1)-O(2) bond lengths are 2.75 Å. Both Na(1)-O(3) bond lengths are 2.31 Å. Both Na(1)-O(5) bond lengths are 2.37 Å. All Na(1)-O(1) bond lengths are 2.81 Å. La(1) is bonded in a 10-coordinate geometry to two equivalent O(2), four equivalent O(1), and four equivalent O(4) atoms. Both La(1)-O(2) bond lengths are 2.50 Å. All La(1)-O(1) bond lengths are 2.47 Å. There are two shorter (2.63 Å) and two longer (2.69 Å) La(1)-O(4) bond lengths. Cr(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 CrO6 octahedra. The corner-sharing octahedral tilt angles range from 16-29°. The Cr(1)-O(2) bond length is 1.89 Å. The Cr(1)-O(3) bond length is 1.86 Å. The Cr(1)-O(4) bond length is 1.98 Å. The Cr(1)-O(5) bond length is 1.84 Å. There is one shorter (1.77 Å) and one longer (2.09 Å) Cr(1)-O(1) bond length. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(1), one La(1), and two equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Na(1), one La(1), and two equivalent Cr(1) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Na(1) and two equivalent Cr(1) atoms. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent La(1) and two equivalent Cr(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Na(1) and two equivalent Cr(1) atoms.