The material structure described by TbAu2Al2 crystallizes in the tetragonal P4/nmm space group. Tb(1) is bonded in a 16-coordinate geometry to four equivalent Au(1), four equivalent Au(2), four equivalent Al(1), and four equivalent Al(2) atoms. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded to four equivalent Tb(1) and four equivalent Al(2) atoms to form distorted AuTb4Al4 tetrahedra that share corners with twelve equivalent Al(1)Tb4Au4 tetrahedra, edges with two equivalent Al(1)Tb4Au4 tetrahedra, edges with four equivalent Au(1)Tb4Al4 tetrahedra, and faces with four equivalent Au(1)Tb4Al4 tetrahedra. In the second Au site, Au(2) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Al(2), and four equivalent Al(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Tb(1) and four equivalent Au(2) atoms to form AlTb4Au4 tetrahedra that share corners with twelve equivalent Au(1)Tb4Al4 tetrahedra, edges with two equivalent Au(1)Tb4Al4 tetrahedra, edges with four equivalent Al(1)Tb4Au4 tetrahedra, and faces with four equivalent Al(1)Tb4Au4 tetrahedra. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to four equivalent Tb(1), one Au(2), and four equivalent Au(1) atoms. is represented by the CIF card [CIF]
data_Tb(AlAu)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.296
_cell_length_b   4.296
_cell_length_c   10.533
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   194.347
_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  0.500  0.250  1.0
  Tb  Tb1  1  0.500  0.000  0.750  1.0
  Al  Al2  1  0.000  0.000  0.500  1.0
  Al  Al3  1  0.500  0.500  0.500  1.0
  Al  Al4  1  0.000  0.500  0.867  1.0
  Al  Al5  1  0.500  0.000  0.133  1.0
  Au  Au6  1  0.000  0.000  0.000  1.0
  Au  Au7  1  0.500  0.500  0.000  1.0
  Au  Au8  1  0.000  0.500  0.634  1.0
  Au  Au9  1  0.500  0.000  0.366  1.0
[/CIF]
.
The material structure described by TbAu2Al2 crystallizes in the tetragonal P4/nmm space group. Tb(1) is bonded in a 16-coordinate geometry to four equivalent Au(1), four equivalent Au(2), four equivalent Al(1), and four equivalent Al(2) atoms. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded to four equivalent Tb(1) and four equivalent Al(2) atoms to form distorted AuTb4Al4 tetrahedra that share corners with twelve equivalent Al(1)Tb4Au4 tetrahedra, edges with two equivalent Al(1)Tb4Au4 tetrahedra, edges with four equivalent Au(1)Tb4Al4 tetrahedra, and faces with four equivalent Au(1)Tb4Al4 tetrahedra. In the second Au site, Au(2) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Al(2), and four equivalent Al(1) atoms. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to four equivalent Tb(1) and four equivalent Au(2) atoms to form AlTb4Au4 tetrahedra that share corners with twelve equivalent Au(1)Tb4Al4 tetrahedra, edges with two equivalent Au(1)Tb4Al4 tetrahedra, edges with four equivalent Al(1)Tb4Au4 tetrahedra, and faces with four equivalent Al(1)Tb4Au4 tetrahedra. In the second Al site, Al(2) is bonded in a 5-coordinate geometry to four equivalent Tb(1), one Au(2), and four equivalent Au(1) atoms. is represented by the CIF card [CIF]
data_Tb(AlAu)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.296
_cell_length_b   4.296
_cell_length_c   10.533
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   194.347
_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  0.500  0.250  1.0
  Tb  Tb1  1  0.500  0.000  0.750  1.0
  Al  Al2  1  0.000  0.000  0.500  1.0
  Al  Al3  1  0.500  0.500  0.500  1.0
  Al  Al4  1  0.000  0.500  0.867  1.0
  Al  Al5  1  0.500  0.000  0.133  1.0
  Au  Au6  1  0.000  0.000  0.000  1.0
  Au  Au7  1  0.500  0.500  0.000  1.0
  Au  Au8  1  0.000  0.500  0.634  1.0
  Au  Au9  1  0.500  0.000  0.366  1.0
[/CIF]
.