KNd(SnO3)4 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded in a 10-coordinate geometry to two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms. Nd(1) is bonded in a 10-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. Sn(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 SnO6 octahedra. The corner-sharing octahedral tilt angles range from 7-29°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(1), one Nd(1), and two equivalent Sn(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Nd(1) and two equivalent Sn(1) atoms. In the third O site, O(3) is bonded in a distorted square co-planar geometry to one K(1), one Nd(1), and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to two equivalent K(1) and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Nd(1) and two equivalent Sn(1) atoms.
KNd(SnO3)4 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded in a 10-coordinate geometry to two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms. Both K(1)-O(3) bond lengths are 2.96 Å. All K(1)-O(1) bond lengths are 3.12 Å. There are two shorter (2.83 Å) and two longer (2.96 Å) K(1)-O(4) bond lengths. Nd(1) is bonded in a 10-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. Both Nd(1)-O(2) bond lengths are 2.57 Å. Both Nd(1)-O(3) bond lengths are 2.66 Å. Both Nd(1)-O(5) bond lengths are 2.49 Å. All Nd(1)-O(1) bond lengths are 2.66 Å. Sn(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 SnO6 octahedra. The corner-sharing octahedral tilt angles range from 7-29°. The Sn(1)-O(2) bond length is 2.06 Å. The Sn(1)-O(3) bond length is 2.09 Å. The Sn(1)-O(4) bond length is 2.01 Å. The Sn(1)-O(5) bond length is 2.12 Å. Both Sn(1)-O(1) bond lengths are 2.07 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one K(1), one Nd(1), and two equivalent Sn(1) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Nd(1) and two equivalent Sn(1) atoms. In the third O site, O(3) is bonded in a distorted square co-planar geometry to one K(1), one Nd(1), and two equivalent Sn(1) atoms. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to two equivalent K(1) and two equivalent Sn(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Nd(1) and two equivalent Sn(1) atoms.