K2Nd2Ti3O10 crystallizes in the orthorhombic Fmm2 space group. K(1) is bonded in a 9-coordinate geometry to four equivalent O(3) and five equivalent O(2) atoms. Nd(1) is bonded in a 12-coordinate geometry to four equivalent O(1), four equivalent O(3), and four equivalent O(4) atoms. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), and four equivalent O(3) atoms. In the second Ti site, Ti(2) is bonded to two equivalent O(1) and four equivalent O(4) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 10°. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 2-coordinate geometry to two equivalent K(1), two equivalent Nd(1), and two equivalent Ti(1) atoms. In the second O site, O(4) is bonded in a distorted linear geometry to four equivalent Nd(1) and two equivalent Ti(2) atoms. In the third O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Nd(1), one Ti(1), and one Ti(2) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to five equivalent K(1) and one Ti(1) atom.
K2Nd2Ti3O10 crystallizes in the orthorhombic Fmm2 space group. K(1) is bonded in a 9-coordinate geometry to four equivalent O(3) and five equivalent O(2) atoms. There are two shorter (3.13 Å) and two longer (3.14 Å) K(1)-O(3) bond lengths. There are a spread of K(1)-O(2) bond distances ranging from 2.77-2.80 Å. Nd(1) is bonded in a 12-coordinate geometry to four equivalent O(1), four equivalent O(3), and four equivalent O(4) atoms. There are a spread of Nd(1)-O(1) bond distances ranging from 2.53-3.03 Å. There are two shorter (2.47 Å) and two longer (2.59 Å) Nd(1)-O(3) bond lengths. There are two shorter (2.72 Å) and two longer (3.11 Å) Nd(1)-O(4) bond lengths. There are two inequivalent Ti sites. In the first Ti site, Ti(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), and four equivalent O(3) atoms. The Ti(1)-O(1) bond length is 2.25 Å. The Ti(1)-O(2) bond length is 1.77 Å. There are two shorter (1.97 Å) and two longer (2.02 Å) Ti(1)-O(3) bond lengths. In the second Ti site, Ti(2) is bonded to two equivalent O(1) and four equivalent O(4) atoms to form corner-sharing TiO6 octahedra. The corner-sharing octahedral tilt angles are 10°. Both Ti(2)-O(1) bond lengths are 1.92 Å. There are two shorter (1.89 Å) and two longer (2.03 Å) Ti(2)-O(4) bond lengths. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 2-coordinate geometry to two equivalent K(1), two equivalent Nd(1), and two equivalent Ti(1) atoms. In the second O site, O(4) is bonded in a distorted linear geometry to four equivalent Nd(1) and two equivalent Ti(2) atoms. In the third O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Nd(1), one Ti(1), and one Ti(2) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to five equivalent K(1) and one Ti(1) atom.