K2Na3InO4 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), and four equivalent O(2) atoms. In the second K site, K(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted KO6 octahedra that share corners with two equivalent In(1)O4 tetrahedra, corners with eight equivalent Na(1)O4 tetrahedra, corners with two equivalent Na(2)O4 trigonal pyramids, edges with two equivalent K(2)O6 octahedra, edges with two equivalent Na(1)O4 tetrahedra, edges with two equivalent In(1)O4 tetrahedra, and edges with two equivalent Na(2)O4 trigonal pyramids. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form distorted NaO4 tetrahedra that share corners with four equivalent K(2)O6 octahedra, corners with two equivalent Na(1)O4 tetrahedra, corners with two equivalent In(1)O4 tetrahedra, corners with two equivalent Na(2)O4 trigonal pyramids,  an edgeedge with one K(2)O6 octahedra,  an edgeedge with one Na(1)O4 tetrahedra,  an edgeedge with one In(1)O4 tetrahedra, and  an edgeedge with one Na(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 29-48°. In the second Na site, Na(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form distorted NaO4 trigonal pyramids that share corners with two equivalent K(2)O6 octahedra, corners with two equivalent In(1)O4 tetrahedra, corners with four equivalent Na(1)O4 tetrahedra, edges with two equivalent K(2)O6 octahedra,  an edgeedge with one In(1)O4 tetrahedra, and edges with two equivalent Na(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. In(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form InO4 tetrahedra that share corners with two equivalent K(2)O6 octahedra, corners with four equivalent Na(1)O4 tetrahedra, corners with two equivalent Na(2)O4 trigonal pyramids, edges with two equivalent K(2)O6 octahedra, edges with two equivalent Na(1)O4 tetrahedra, and  an edgeedge with one Na(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 50°. There are three inequivalent O sites. In the first O site, O(3) is bonded in a 7-coordinate geometry to one K(1), two equivalent K(2), one Na(2), two equivalent Na(1), and one In(1) atom. In the second O site, O(1) is bonded in a 7-coordinate geometry to one K(1), two equivalent K(2), one Na(2), two equivalent Na(1), and one In(1) atom. In the third O site, O(2) is bonded in a 7-coordinate geometry to one K(2), two equivalent K(1), one Na(2), two equivalent Na(1), and one In(1) atom.
K2Na3InO4 crystallizes in the orthorhombic Pnnm space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), and four equivalent O(2) atoms. The K(1)-O(1) bond length is 2.82 Å. The K(1)-O(3) bond length is 3.10 Å. There are two shorter (3.09 Å) and two longer (3.15 Å) K(1)-O(2) bond lengths. In the second K site, K(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted KO6 octahedra that share corners with two equivalent In(1)O4 tetrahedra, corners with eight equivalent Na(1)O4 tetrahedra, corners with two equivalent Na(2)O4 trigonal pyramids, edges with two equivalent K(2)O6 octahedra, edges with two equivalent Na(1)O4 tetrahedra, edges with two equivalent In(1)O4 tetrahedra, and edges with two equivalent Na(2)O4 trigonal pyramids. Both K(2)-O(1) bond lengths are 2.97 Å. Both K(2)-O(2) bond lengths are 2.83 Å. Both K(2)-O(3) bond lengths are 2.90 Å. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form distorted NaO4 tetrahedra that share corners with four equivalent K(2)O6 octahedra, corners with two equivalent Na(1)O4 tetrahedra, corners with two equivalent In(1)O4 tetrahedra, corners with two equivalent Na(2)O4 trigonal pyramids,  an edgeedge with one K(2)O6 octahedra,  an edgeedge with one Na(1)O4 tetrahedra,  an edgeedge with one In(1)O4 tetrahedra, and  an edgeedge with one Na(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 29-48°. The Na(1)-O(1) bond length is 2.33 Å. The Na(1)-O(3) bond length is 2.38 Å. There is one shorter (2.35 Å) and one longer (2.41 Å) Na(1)-O(2) bond length. In the second Na site, Na(2) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form distorted NaO4 trigonal pyramids that share corners with two equivalent K(2)O6 octahedra, corners with two equivalent In(1)O4 tetrahedra, corners with four equivalent Na(1)O4 tetrahedra, edges with two equivalent K(2)O6 octahedra,  an edgeedge with one In(1)O4 tetrahedra, and edges with two equivalent Na(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 45°. The Na(2)-O(1) bond length is 2.52 Å. The Na(2)-O(3) bond length is 2.39 Å. Both Na(2)-O(2) bond lengths are 2.25 Å. In(1) is bonded to one O(1), one O(3), and two equivalent O(2) atoms to form InO4 tetrahedra that share corners with two equivalent K(2)O6 octahedra, corners with four equivalent Na(1)O4 tetrahedra, corners with two equivalent Na(2)O4 trigonal pyramids, edges with two equivalent K(2)O6 octahedra, edges with two equivalent Na(1)O4 tetrahedra, and  an edgeedge with one Na(2)O4 trigonal pyramid. The corner-sharing octahedral tilt angles are 50°. The In(1)-O(1) bond length is 2.11 Å. The In(1)-O(3) bond length is 2.14 Å. Both In(1)-O(2) bond lengths are 2.09 Å. There are three inequivalent O sites. In the first O site, O(3) is bonded in a 7-coordinate geometry to one K(1), two equivalent K(2), one Na(2), two equivalent Na(1), and one In(1) atom. In the second O site, O(1) is bonded in a 7-coordinate geometry to one K(1), two equivalent K(2), one Na(2), two equivalent Na(1), and one In(1) atom. In the third O site, O(2) is bonded in a 7-coordinate geometry to one K(2), two equivalent K(1), one Na(2), two equivalent Na(1), and one In(1) atom.