FeCo3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Fe(1) is bonded to twelve equivalent Co(1) atoms to form FeCo12 cuboctahedra that share corners with twelve equivalent Fe(1)Co12 cuboctahedra, edges with twenty-four equivalent Co(1)Fe4Co8 cuboctahedra, faces with six equivalent Fe(1)Co12 cuboctahedra, and faces with twelve equivalent Co(1)Fe4Co8 cuboctahedra. Co(1) is bonded to four equivalent Fe(1) and eight equivalent Co(1) atoms to form CoFe4Co8 cuboctahedra that share corners with twelve equivalent Co(1)Fe4Co8 cuboctahedra, edges with eight equivalent Fe(1)Co12 cuboctahedra, edges with sixteen equivalent Co(1)Fe4Co8 cuboctahedra, faces with four equivalent Fe(1)Co12 cuboctahedra, and faces with fourteen equivalent Co(1)Fe4Co8 cuboctahedra.
FeCo3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Fe(1) is bonded to twelve equivalent Co(1) atoms to form FeCo12 cuboctahedra that share corners with twelve equivalent Fe(1)Co12 cuboctahedra, edges with twenty-four equivalent Co(1)Fe4Co8 cuboctahedra, faces with six equivalent Fe(1)Co12 cuboctahedra, and faces with twelve equivalent Co(1)Fe4Co8 cuboctahedra. All Fe(1)-Co(1) bond lengths are 2.50 Å. Co(1) is bonded to four equivalent Fe(1) and eight equivalent Co(1) atoms to form CoFe4Co8 cuboctahedra that share corners with twelve equivalent Co(1)Fe4Co8 cuboctahedra, edges with eight equivalent Fe(1)Co12 cuboctahedra, edges with sixteen equivalent Co(1)Fe4Co8 cuboctahedra, faces with four equivalent Fe(1)Co12 cuboctahedra, and faces with fourteen equivalent Co(1)Fe4Co8 cuboctahedra. All Co(1)-Co(1) bond lengths are 2.50 Å.