PaAl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Pa(1) is bonded to twelve equivalent Al(1) atoms to form PaAl12 cuboctahedra that share corners with twelve equivalent Pa(1)Al12 cuboctahedra, edges with twenty-four equivalent Al(1)Pa4Al8 cuboctahedra, faces with six equivalent Pa(1)Al12 cuboctahedra, and faces with twelve equivalent Al(1)Pa4Al8 cuboctahedra. Al(1) is bonded to four equivalent Pa(1) and eight equivalent Al(1) atoms to form AlPa4Al8 cuboctahedra that share corners with twelve equivalent Al(1)Pa4Al8 cuboctahedra, edges with eight equivalent Pa(1)Al12 cuboctahedra, edges with sixteen equivalent Al(1)Pa4Al8 cuboctahedra, faces with four equivalent Pa(1)Al12 cuboctahedra, and faces with fourteen equivalent Al(1)Pa4Al8 cuboctahedra.
PaAl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Pa(1) is bonded to twelve equivalent Al(1) atoms to form PaAl12 cuboctahedra that share corners with twelve equivalent Pa(1)Al12 cuboctahedra, edges with twenty-four equivalent Al(1)Pa4Al8 cuboctahedra, faces with six equivalent Pa(1)Al12 cuboctahedra, and faces with twelve equivalent Al(1)Pa4Al8 cuboctahedra. All Pa(1)-Al(1) bond lengths are 3.03 Å. Al(1) is bonded to four equivalent Pa(1) and eight equivalent Al(1) atoms to form AlPa4Al8 cuboctahedra that share corners with twelve equivalent Al(1)Pa4Al8 cuboctahedra, edges with eight equivalent Pa(1)Al12 cuboctahedra, edges with sixteen equivalent Al(1)Pa4Al8 cuboctahedra, faces with four equivalent Pa(1)Al12 cuboctahedra, and faces with fourteen equivalent Al(1)Pa4Al8 cuboctahedra. All Al(1)-Al(1) bond lengths are 3.03 Å.