NaSrHfNbO6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic F-43m space group. Na(1) is bonded to twelve equivalent O(1) atoms to form NaO12 cuboctahedra that share corners with twelve equivalent Na(1)O12 cuboctahedra, faces with six equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Hf(1)O6 octahedra, and faces with four equivalent Nb(1)O6 octahedra. Sr(1) is bonded to twelve equivalent O(1) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Sr(1)O12 cuboctahedra, faces with six equivalent Na(1)O12 cuboctahedra, faces with four equivalent Hf(1)O6 octahedra, and faces with four equivalent Nb(1)O6 octahedra. Hf(1) is bonded to six equivalent O(1) atoms to form HfO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra, faces with four equivalent Na(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Hf(1)O6 octahedra, faces with four equivalent Na(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. O(1) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Sr(1), one Hf(1), and one Nb(1) atom.
NaSrHfNbO6 is (Cubic) Perovskite-derived structured and crystallizes in the cubic F-43m space group. Na(1) is bonded to twelve equivalent O(1) atoms to form NaO12 cuboctahedra that share corners with twelve equivalent Na(1)O12 cuboctahedra, faces with six equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Hf(1)O6 octahedra, and faces with four equivalent Nb(1)O6 octahedra. All Na(1)-O(1) bond lengths are 2.89 Å. Sr(1) is bonded to twelve equivalent O(1) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Sr(1)O12 cuboctahedra, faces with six equivalent Na(1)O12 cuboctahedra, faces with four equivalent Hf(1)O6 octahedra, and faces with four equivalent Nb(1)O6 octahedra. All Sr(1)-O(1) bond lengths are 2.89 Å. Hf(1) is bonded to six equivalent O(1) atoms to form HfO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra, faces with four equivalent Na(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Hf(1)-O(1) bond lengths are 2.07 Å. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Hf(1)O6 octahedra, faces with four equivalent Na(1)O12 cuboctahedra, and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Nb(1)-O(1) bond lengths are 2.01 Å. O(1) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Sr(1), one Hf(1), and one Nb(1) atom.