The crystal structure described by Tb3Ir3Ga8 crystallizes in the orthorhombic Immm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to four equivalent Ir(2), four equivalent Ga(1), and eight equivalent Ga(2) atoms to form distorted face-sharing TbGa12Ir4 cuboctahedra. In the second Tb site, Tb(2) is bonded in a 12-coordinate geometry to two equivalent Ir(1), two equivalent Ir(2), four equivalent Ga(1), and four equivalent Ga(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to four equivalent Tb(2) and four equivalent Ga(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), two equivalent Ga(2), and four equivalent Ga(1) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to one Tb(1), two equivalent Tb(2), one Ir(1), two equivalent Ir(2), and three equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), one Ir(2), one Ga(2), and three equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb3Ga8Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.197
_cell_length_b   8.197
_cell_length_c   8.197
_cell_angle_alpha   150.104
_cell_angle_beta   105.526
_cell_angle_gamma   82.265
_symmetry_Int_Tables_number   1
_cell_volume   259.041
_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  0.000  1.0
  Tb  Tb1  1  0.172  0.172  0.000  1.0
  Tb  Tb2  1  0.828  0.828  0.000  1.0
  Ga  Ga3  1  0.661  0.376  0.285  1.0
  Ga  Ga4  1  0.339  0.624  0.715  1.0
  Ga  Ga5  1  0.090  0.376  0.715  1.0
  Ga  Ga6  1  0.910  0.624  0.285  1.0
  Ga  Ga7  1  0.538  0.167  0.371  1.0
  Ga  Ga8  1  0.462  0.833  0.629  1.0
  Ga  Ga9  1  0.796  0.167  0.629  1.0
  Ga  Ga10  1  0.204  0.833  0.371  1.0
  Ir  Ir11  1  0.000  0.500  0.500  1.0
  Ir  Ir12  1  0.217  0.000  0.217  1.0
  Ir  Ir13  1  0.783  0.000  0.783  1.0
[/CIF]
.
The crystal structure described by Tb3Ir3Ga8 crystallizes in the orthorhombic Immm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded to four equivalent Ir(2), four equivalent Ga(1), and eight equivalent Ga(2) atoms to form distorted face-sharing TbGa12Ir4 cuboctahedra. In the second Tb site, Tb(2) is bonded in a 12-coordinate geometry to two equivalent Ir(1), two equivalent Ir(2), four equivalent Ga(1), and four equivalent Ga(2) atoms. There are two inequivalent Ir sites. In the first Ir site, Ir(1) is bonded in a 8-coordinate geometry to four equivalent Tb(2) and four equivalent Ga(1) atoms. In the second Ir site, Ir(2) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), two equivalent Ga(2), and four equivalent Ga(1) atoms. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 9-coordinate geometry to one Tb(1), two equivalent Tb(2), one Ir(1), two equivalent Ir(2), and three equivalent Ga(2) atoms. In the second Ga site, Ga(2) is bonded in a 9-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), one Ir(2), one Ga(2), and three equivalent Ga(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tb3Ga8Ir3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.197
_cell_length_b   8.197
_cell_length_c   8.197
_cell_angle_alpha   150.104
_cell_angle_beta   105.526
_cell_angle_gamma   82.265
_symmetry_Int_Tables_number   1
_cell_volume   259.041
_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  0.000  1.0
  Tb  Tb1  1  0.172  0.172  0.000  1.0
  Tb  Tb2  1  0.828  0.828  0.000  1.0
  Ga  Ga3  1  0.661  0.376  0.285  1.0
  Ga  Ga4  1  0.339  0.624  0.715  1.0
  Ga  Ga5  1  0.090  0.376  0.715  1.0
  Ga  Ga6  1  0.910  0.624  0.285  1.0
  Ga  Ga7  1  0.538  0.167  0.371  1.0
  Ga  Ga8  1  0.462  0.833  0.629  1.0
  Ga  Ga9  1  0.796  0.167  0.629  1.0
  Ga  Ga10  1  0.204  0.833  0.371  1.0
  Ir  Ir11  1  0.000  0.500  0.500  1.0
  Ir  Ir12  1  0.217  0.000  0.217  1.0
  Ir  Ir13  1  0.783  0.000  0.783  1.0
[/CIF]
.