Fe3Nb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Nb(1) is bonded to twelve equivalent Fe(1) atoms to form NbFe12 cuboctahedra that share corners with twelve equivalent Nb(1)Fe12 cuboctahedra, edges with twenty-four equivalent Fe(1)Nb4Fe8 cuboctahedra, faces with six equivalent Nb(1)Fe12 cuboctahedra, and faces with twelve equivalent Fe(1)Nb4Fe8 cuboctahedra. Fe(1) is bonded to four equivalent Nb(1) and eight equivalent Fe(1) atoms to form FeNb4Fe8 cuboctahedra that share corners with twelve equivalent Fe(1)Nb4Fe8 cuboctahedra, edges with eight equivalent Nb(1)Fe12 cuboctahedra, edges with sixteen equivalent Fe(1)Nb4Fe8 cuboctahedra, faces with four equivalent Nb(1)Fe12 cuboctahedra, and faces with fourteen equivalent Fe(1)Nb4Fe8 cuboctahedra.
Fe3Nb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Nb(1) is bonded to twelve equivalent Fe(1) atoms to form NbFe12 cuboctahedra that share corners with twelve equivalent Nb(1)Fe12 cuboctahedra, edges with twenty-four equivalent Fe(1)Nb4Fe8 cuboctahedra, faces with six equivalent Nb(1)Fe12 cuboctahedra, and faces with twelve equivalent Fe(1)Nb4Fe8 cuboctahedra. All Nb(1)-Fe(1) bond lengths are 2.64 Å. Fe(1) is bonded to four equivalent Nb(1) and eight equivalent Fe(1) atoms to form FeNb4Fe8 cuboctahedra that share corners with twelve equivalent Fe(1)Nb4Fe8 cuboctahedra, edges with eight equivalent Nb(1)Fe12 cuboctahedra, edges with sixteen equivalent Fe(1)Nb4Fe8 cuboctahedra, faces with four equivalent Nb(1)Fe12 cuboctahedra, and faces with fourteen equivalent Fe(1)Nb4Fe8 cuboctahedra. All Fe(1)-Fe(1) bond lengths are 2.64 Å.