The structure described by Tb4AgGa12 crystallizes in the cubic Im-3m space group. Tb(1) is bonded to six equivalent Ga(1) and six equivalent Ga(2) atoms to form TbGa12 cuboctahedra that share corners with twelve equivalent Tb(1)Ga12 cuboctahedra, faces with six equivalent Tb(1)Ga12 cuboctahedra, and faces with two equivalent Ag(1)Ga6 octahedra. Ag(1) is bonded to six equivalent Ga(2) atoms to form AgGa6 octahedra that share faces with eight equivalent Tb(1)Ga12 cuboctahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 12-coordinate geometry to four equivalent Tb(1), four equivalent Ga(1), and four equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Ag(1), and four equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4Ga12Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.479
_cell_length_b   7.479
_cell_length_c   7.479
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   322.057
_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  0.500  0.500  0.500  1.0
  Tb  Tb1  1  0.000  0.000  0.500  1.0
  Tb  Tb2  1  0.000  0.500  0.000  1.0
  Tb  Tb3  1  0.500  0.000  0.000  1.0
  Ga  Ga4  1  0.500  0.750  0.250  1.0
  Ga  Ga5  1  0.500  0.250  0.750  1.0
  Ga  Ga6  1  0.250  0.500  0.750  1.0
  Ga  Ga7  1  0.750  0.500  0.250  1.0
  Ga  Ga8  1  0.750  0.250  0.500  1.0
  Ga  Ga9  1  0.250  0.750  0.500  1.0
  Ga  Ga10  1  0.000  0.307  0.307  1.0
  Ga  Ga11  1  0.000  0.693  0.693  1.0
  Ga  Ga12  1  0.307  0.000  0.307  1.0
  Ga  Ga13  1  0.693  0.000  0.693  1.0
  Ga  Ga14  1  0.307  0.307  0.000  1.0
  Ga  Ga15  1  0.693  0.693  0.000  1.0
  Ag  Ag16  1  0.000  0.000  0.000  1.0
[/CIF]
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The structure described by Tb4AgGa12 crystallizes in the cubic Im-3m space group. Tb(1) is bonded to six equivalent Ga(1) and six equivalent Ga(2) atoms to form TbGa12 cuboctahedra that share corners with twelve equivalent Tb(1)Ga12 cuboctahedra, faces with six equivalent Tb(1)Ga12 cuboctahedra, and faces with two equivalent Ag(1)Ga6 octahedra. Ag(1) is bonded to six equivalent Ga(2) atoms to form AgGa6 octahedra that share faces with eight equivalent Tb(1)Ga12 cuboctahedra. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 12-coordinate geometry to four equivalent Tb(1), four equivalent Ga(1), and four equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to four equivalent Tb(1), one Ag(1), and four equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb4Ga12Ag
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.479
_cell_length_b   7.479
_cell_length_c   7.479
_cell_angle_alpha   109.471
_cell_angle_beta   109.471
_cell_angle_gamma   109.471
_symmetry_Int_Tables_number   1
_cell_volume   322.057
_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  0.500  0.500  0.500  1.0
  Tb  Tb1  1  0.000  0.000  0.500  1.0
  Tb  Tb2  1  0.000  0.500  0.000  1.0
  Tb  Tb3  1  0.500  0.000  0.000  1.0
  Ga  Ga4  1  0.500  0.750  0.250  1.0
  Ga  Ga5  1  0.500  0.250  0.750  1.0
  Ga  Ga6  1  0.250  0.500  0.750  1.0
  Ga  Ga7  1  0.750  0.500  0.250  1.0
  Ga  Ga8  1  0.750  0.250  0.500  1.0
  Ga  Ga9  1  0.250  0.750  0.500  1.0
  Ga  Ga10  1  0.000  0.307  0.307  1.0
  Ga  Ga11  1  0.000  0.693  0.693  1.0
  Ga  Ga12  1  0.307  0.000  0.307  1.0
  Ga  Ga13  1  0.693  0.000  0.693  1.0
  Ga  Ga14  1  0.307  0.307  0.000  1.0
  Ga  Ga15  1  0.693  0.693  0.000  1.0
  Ag  Ag16  1  0.000  0.000  0.000  1.0
[/CIF]
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