NbFe(PbO3)2 crystallizes in the cubic Fm-3m space group. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Fe(1)O6 octahedra and faces with eight equivalent Pb(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Fe(1) is bonded to six equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra and faces with eight equivalent Pb(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. Pb(1) is bonded to twelve equivalent O(1) atoms to form PbO12 cuboctahedra that share corners with twelve equivalent Pb(1)O12 cuboctahedra, faces with six equivalent Pb(1)O12 cuboctahedra, faces with four equivalent Nb(1)O6 octahedra, and faces with four equivalent Fe(1)O6 octahedra. O(1) is bonded in a linear geometry to one Nb(1), one Fe(1), and four equivalent Pb(1) atoms.
NbFe(PbO3)2 crystallizes in the cubic Fm-3m space group. Nb(1) is bonded to six equivalent O(1) atoms to form NbO6 octahedra that share corners with six equivalent Fe(1)O6 octahedra and faces with eight equivalent Pb(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Nb(1)-O(1) bond lengths are 2.02 Å. Fe(1) is bonded to six equivalent O(1) atoms to form FeO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra and faces with eight equivalent Pb(1)O12 cuboctahedra. The corner-sharing octahedra are not tilted. All Fe(1)-O(1) bond lengths are 2.03 Å. Pb(1) is bonded to twelve equivalent O(1) atoms to form PbO12 cuboctahedra that share corners with twelve equivalent Pb(1)O12 cuboctahedra, faces with six equivalent Pb(1)O12 cuboctahedra, faces with four equivalent Nb(1)O6 octahedra, and faces with four equivalent Fe(1)O6 octahedra. All Pb(1)-O(1) bond lengths are 2.86 Å. O(1) is bonded in a linear geometry to one Nb(1), one Fe(1), and four equivalent Pb(1) atoms.