Nd(IO3)3 crystallizes in the orthorhombic Pmmn space group. Nd(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Nd(1), one I(1), and one I(2) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Nd(1) and two equivalent I(1) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Nd(1) and two equivalent I(1) atoms. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Nd(1) and one I(1) atom. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms. In the second I site, I(2) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms.
Nd(IO3)3 crystallizes in the orthorhombic Pmmn space group. Nd(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(1) atoms. The Nd(1)-O(2) bond length is 2.34 Å. Both Nd(1)-O(3) bond lengths are 2.93 Å. Both Nd(1)-O(4) bond lengths are 2.56 Å. All Nd(1)-O(1) bond lengths are 2.55 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Nd(1), one I(1), and one I(2) atom. The O(1)-I(1) bond length is 2.56 Å. The O(1)-I(2) bond length is 1.93 Å. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Nd(1) and two equivalent I(1) atoms. Both O(2)-I(1) bond lengths are 2.61 Å. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Nd(1) and two equivalent I(1) atoms. Both O(3)-I(1) bond lengths are 2.12 Å. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Nd(1) and one I(1) atom. The O(4)-I(1) bond length is 1.87 Å. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 6-coordinate geometry to one O(2), one O(4), two equivalent O(1), and two equivalent O(3) atoms. In the second I site, I(2) is bonded in a 4-coordinate geometry to four equivalent O(1) atoms.