KEuSmSbO6 is Orthorhombic Perovskite-derived structured and crystallizes in the orthorhombic Pnnn space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. In the second K site, K(2) is bonded in a 4-coordinate geometry to four equivalent O(1) and four equivalent O(3) atoms. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted square co-planar geometry to four equivalent O(3) atoms. In the second Eu site, Eu(2) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form EuO12 cuboctahedra that share faces with four equivalent Sm(1)O6 octahedra and faces with four equivalent Sb(1)O6 octahedra. Sm(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SmO6 octahedra that share corners with six equivalent Sb(1)O6 octahedra and faces with two equivalent Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 19-29°. Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with six equivalent Sm(1)O6 octahedra and faces with two equivalent Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 19-29°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one K(1), one K(2), one Eu(2), one Sm(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Eu(2), one Sm(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one K(2), one Eu(1), one Eu(2), one Sm(1), and one Sb(1) atom.
KEuSmSbO6 is Orthorhombic Perovskite-derived structured and crystallizes in the orthorhombic Pnnn space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. All K(1)-O(1) bond lengths are 3.12 Å. All K(1)-O(2) bond lengths are 2.62 Å. In the second K site, K(2) is bonded in a 4-coordinate geometry to four equivalent O(1) and four equivalent O(3) atoms. All K(2)-O(1) bond lengths are 2.65 Å. All K(2)-O(3) bond lengths are 3.15 Å. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a distorted square co-planar geometry to four equivalent O(3) atoms. All Eu(1)-O(3) bond lengths are 2.45 Å. In the second Eu site, Eu(2) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form EuO12 cuboctahedra that share faces with four equivalent Sm(1)O6 octahedra and faces with four equivalent Sb(1)O6 octahedra. All Eu(2)-O(1) bond lengths are 2.90 Å. All Eu(2)-O(2) bond lengths are 2.96 Å. All Eu(2)-O(3) bond lengths are 2.90 Å. Sm(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SmO6 octahedra that share corners with six equivalent Sb(1)O6 octahedra and faces with two equivalent Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 19-29°. Both Sm(1)-O(1) bond lengths are 2.28 Å. Both Sm(1)-O(2) bond lengths are 2.27 Å. Both Sm(1)-O(3) bond lengths are 2.33 Å. Sb(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form SbO6 octahedra that share corners with six equivalent Sm(1)O6 octahedra and faces with two equivalent Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 19-29°. Both Sb(1)-O(1) bond lengths are 2.00 Å. Both Sb(1)-O(2) bond lengths are 1.99 Å. Both Sb(1)-O(3) bond lengths are 2.06 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one K(1), one K(2), one Eu(2), one Sm(1), and one Sb(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Eu(2), one Sm(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a 5-coordinate geometry to one K(2), one Eu(1), one Eu(2), one Sm(1), and one Sb(1) atom.