The material described by TbAu2Si2 crystallizes in the tetragonal I4/mmm space group. Tb(1) is bonded in a 16-coordinate geometry to eight equivalent Au(1) and eight equivalent Si(1) atoms. Au(1) is bonded to four equivalent Tb(1) and four equivalent Si(1) atoms to form a mixture of distorted edge, corner, and face-sharing AuTb4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Tb(1), four equivalent Au(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Tb(SiAu)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.244
_cell_length_b   4.244
_cell_length_c   5.912
_cell_angle_alpha   111.032
_cell_angle_beta   111.032
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   91.748
_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  0.000  0.000  1.0
  Si  Si1  1  0.388  0.388  0.776  1.0
  Si  Si2  1  0.612  0.612  0.224  1.0
  Au  Au3  1  0.750  0.250  0.500  1.0
  Au  Au4  1  0.250  0.750  0.500  1.0
[/CIF]
.
The material described by TbAu2Si2 crystallizes in the tetragonal I4/mmm space group. Tb(1) is bonded in a 16-coordinate geometry to eight equivalent Au(1) and eight equivalent Si(1) atoms. Au(1) is bonded to four equivalent Tb(1) and four equivalent Si(1) atoms to form a mixture of distorted edge, corner, and face-sharing AuTb4Si4 tetrahedra. Si(1) is bonded in a 9-coordinate geometry to four equivalent Tb(1), four equivalent Au(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Tb(SiAu)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.244
_cell_length_b   4.244
_cell_length_c   5.912
_cell_angle_alpha   111.032
_cell_angle_beta   111.032
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   91.748
_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  0.000  0.000  1.0
  Si  Si1  1  0.388  0.388  0.776  1.0
  Si  Si2  1  0.612  0.612  0.224  1.0
  Au  Au3  1  0.750  0.250  0.500  1.0
  Au  Au4  1  0.250  0.750  0.500  1.0
[/CIF]
.