The structure described by TmTb3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Tm(1) is bonded to twelve equivalent Tb(1) atoms to form TmTb12 cuboctahedra that share corners with twelve equivalent Tm(1)Tb12 cuboctahedra, edges with twenty-four equivalent Tb(1)Tb8Tm4 cuboctahedra, faces with six equivalent Tm(1)Tb12 cuboctahedra, and faces with twelve equivalent Tb(1)Tb8Tm4 cuboctahedra. Tb(1) is bonded to four equivalent Tm(1) and eight equivalent Tb(1) atoms to form TbTb8Tm4 cuboctahedra that share corners with twelve equivalent Tb(1)Tb8Tm4 cuboctahedra, edges with eight equivalent Tm(1)Tb12 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Tm4 cuboctahedra, faces with four equivalent Tm(1)Tb12 cuboctahedra, and faces with fourteen equivalent Tb(1)Tb8Tm4 cuboctahedra. is represented by the CIF file [CIF]
data_Tb3Tm
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.017
_cell_length_b   5.017
_cell_length_c   5.017
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   126.273
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Tb  Tb0  1  0.000  0.500  0.500  1.0
  Tb  Tb1  1  0.500  0.000  0.500  1.0
  Tb  Tb2  1  0.500  0.500  0.000  1.0
  Tm  Tm3  1  0.000  0.000  0.000  1.0
[/CIF]
.
The structure described by TmTb3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. Tm(1) is bonded to twelve equivalent Tb(1) atoms to form TmTb12 cuboctahedra that share corners with twelve equivalent Tm(1)Tb12 cuboctahedra, edges with twenty-four equivalent Tb(1)Tb8Tm4 cuboctahedra, faces with six equivalent Tm(1)Tb12 cuboctahedra, and faces with twelve equivalent Tb(1)Tb8Tm4 cuboctahedra. Tb(1) is bonded to four equivalent Tm(1) and eight equivalent Tb(1) atoms to form TbTb8Tm4 cuboctahedra that share corners with twelve equivalent Tb(1)Tb8Tm4 cuboctahedra, edges with eight equivalent Tm(1)Tb12 cuboctahedra, edges with sixteen equivalent Tb(1)Tb8Tm4 cuboctahedra, faces with four equivalent Tm(1)Tb12 cuboctahedra, and faces with fourteen equivalent Tb(1)Tb8Tm4 cuboctahedra. is represented by the CIF file [CIF]
data_Tb3Tm
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.017
_cell_length_b   5.017
_cell_length_c   5.017
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   126.273
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Tb  Tb0  1  0.000  0.500  0.500  1.0
  Tb  Tb1  1  0.500  0.000  0.500  1.0
  Tb  Tb2  1  0.500  0.500  0.000  1.0
  Tm  Tm3  1  0.000  0.000  0.000  1.0
[/CIF]
.