The structure described by Tb(Fe2Si)2 crystallizes in the tetragonal P4_2/mnm space group. Tb(1) is bonded in a 18-coordinate geometry to twelve equivalent Fe(1) and six equivalent Si(1) atoms. Fe(1) is bonded in a 12-coordinate geometry to three equivalent Tb(1), six equivalent Fe(1), and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Fe(1) atoms. is represented by the CIF card [CIF]
data_Tb(Fe2Si)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.100
_cell_length_b   7.100
_cell_length_c   3.774
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   190.205
_cell_formula_units_Z   2
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  0.000  0.000  1.0
  Tb  Tb1  1  0.500  0.500  0.500  1.0
  Fe  Fe2  1  0.588  0.151  0.000  1.0
  Fe  Fe3  1  0.412  0.849  0.000  1.0
  Fe  Fe4  1  0.651  0.912  0.500  1.0
  Fe  Fe5  1  0.088  0.349  0.500  1.0
  Fe  Fe6  1  0.349  0.088  0.500  1.0
  Fe  Fe7  1  0.912  0.651  0.500  1.0
  Fe  Fe8  1  0.151  0.588  0.000  1.0
  Fe  Fe9  1  0.849  0.412  0.000  1.0
  Si  Si10  1  0.282  0.282  0.000  1.0
  Si  Si11  1  0.718  0.718  0.000  1.0
  Si  Si12  1  0.782  0.218  0.500  1.0
  Si  Si13  1  0.218  0.782  0.500  1.0
[/CIF]
.
The structure described by Tb(Fe2Si)2 crystallizes in the tetragonal P4_2/mnm space group. Tb(1) is bonded in a 18-coordinate geometry to twelve equivalent Fe(1) and six equivalent Si(1) atoms. Fe(1) is bonded in a 12-coordinate geometry to three equivalent Tb(1), six equivalent Fe(1), and three equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to three equivalent Tb(1) and six equivalent Fe(1) atoms. is represented by the CIF card [CIF]
data_Tb(Fe2Si)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.100
_cell_length_b   7.100
_cell_length_c   3.774
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   190.205
_cell_formula_units_Z   2
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  0.000  0.000  1.0
  Tb  Tb1  1  0.500  0.500  0.500  1.0
  Fe  Fe2  1  0.588  0.151  0.000  1.0
  Fe  Fe3  1  0.412  0.849  0.000  1.0
  Fe  Fe4  1  0.651  0.912  0.500  1.0
  Fe  Fe5  1  0.088  0.349  0.500  1.0
  Fe  Fe6  1  0.349  0.088  0.500  1.0
  Fe  Fe7  1  0.912  0.651  0.500  1.0
  Fe  Fe8  1  0.151  0.588  0.000  1.0
  Fe  Fe9  1  0.849  0.412  0.000  1.0
  Si  Si10  1  0.282  0.282  0.000  1.0
  Si  Si11  1  0.718  0.718  0.000  1.0
  Si  Si12  1  0.782  0.218  0.500  1.0
  Si  Si13  1  0.218  0.782  0.500  1.0
[/CIF]
.