The material structure described by Tm2FeGa8 crystallizes in the tetragonal P4/mmm space group. Tm(1) is bonded to four equivalent Ga(1), four equivalent Ga(2), and four equivalent Ga(3) atoms to form TmGa12 cuboctahedra that share corners with eight equivalent Tm(1)Ga12 cuboctahedra, edges with eight equivalent Ga(3)Tm4Ga8 cuboctahedra, faces with four equivalent Ga(3)Tm4Ga8 cuboctahedra, and faces with five equivalent Tm(1)Ga12 cuboctahedra. Fe(1) is bonded in a body-centered cubic geometry to eight Ga(1,1) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Tm(1); two equivalent Fe(1); two equivalent Ga(2); and five Ga(1,1) atoms. In the second Ga site, Ga(2) is bonded in a distorted rectangular see-saw-like geometry to four equivalent Tm(1), four equivalent Ga(1), and four equivalent Ga(3) atoms. In the third Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Tm(1); two equivalent Fe(1); two equivalent Ga(2); and five Ga(1,1) atoms. In the fourth Ga site, Ga(3) is bonded to four equivalent Tm(1), four equivalent Ga(2), and four equivalent Ga(3) atoms to form distorted GaTm4Ga8 cuboctahedra that share corners with four equivalent Ga(3)Tm4Ga8 cuboctahedra, edges with eight equivalent Tm(1)Ga12 cuboctahedra, faces with four equivalent Tm(1)Ga12 cuboctahedra, and faces with eight equivalent Ga(3)Tm4Ga8 cuboctahedra. is represented by the CIF card [CIF]
data_Tm2Ga8Fe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.213
_cell_length_b   4.213
_cell_length_c   11.163
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   198.158
_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
  Tm  Tm0  1  0.500  0.500  0.694  1.0
  Tm  Tm1  1  0.500  0.500  0.306  1.0
  Ga  Ga2  1  0.000  0.500  0.885  1.0
  Ga  Ga3  1  0.000  0.000  0.301  1.0
  Ga  Ga4  1  0.000  0.500  0.115  1.0
  Ga  Ga5  1  0.500  0.000  0.885  1.0
  Ga  Ga6  1  0.500  0.000  0.115  1.0
  Ga  Ga7  1  0.500  0.000  0.500  1.0
  Ga  Ga8  1  0.000  0.000  0.699  1.0
  Ga  Ga9  1  0.000  0.500  0.500  1.0
  Fe  Fe10  1  0.500  0.500  0.000  1.0
[/CIF]
.
The material structure described by Tm2FeGa8 crystallizes in the tetragonal P4/mmm space group. Tm(1) is bonded to four equivalent Ga(1), four equivalent Ga(2), and four equivalent Ga(3) atoms to form TmGa12 cuboctahedra that share corners with eight equivalent Tm(1)Ga12 cuboctahedra, edges with eight equivalent Ga(3)Tm4Ga8 cuboctahedra, faces with four equivalent Ga(3)Tm4Ga8 cuboctahedra, and faces with five equivalent Tm(1)Ga12 cuboctahedra. Fe(1) is bonded in a body-centered cubic geometry to eight Ga(1,1) atoms. There are four inequivalent Ga sites. In the first Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Tm(1); two equivalent Fe(1); two equivalent Ga(2); and five Ga(1,1) atoms. In the second Ga site, Ga(2) is bonded in a distorted rectangular see-saw-like geometry to four equivalent Tm(1), four equivalent Ga(1), and four equivalent Ga(3) atoms. In the third Ga site, Ga(1) is bonded in a 11-coordinate geometry to two equivalent Tm(1); two equivalent Fe(1); two equivalent Ga(2); and five Ga(1,1) atoms. In the fourth Ga site, Ga(3) is bonded to four equivalent Tm(1), four equivalent Ga(2), and four equivalent Ga(3) atoms to form distorted GaTm4Ga8 cuboctahedra that share corners with four equivalent Ga(3)Tm4Ga8 cuboctahedra, edges with eight equivalent Tm(1)Ga12 cuboctahedra, faces with four equivalent Tm(1)Ga12 cuboctahedra, and faces with eight equivalent Ga(3)Tm4Ga8 cuboctahedra. is represented by the CIF card [CIF]
data_Tm2Ga8Fe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.213
_cell_length_b   4.213
_cell_length_c   11.163
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   198.158
_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
  Tm  Tm0  1  0.500  0.500  0.694  1.0
  Tm  Tm1  1  0.500  0.500  0.306  1.0
  Ga  Ga2  1  0.000  0.500  0.885  1.0
  Ga  Ga3  1  0.000  0.000  0.301  1.0
  Ga  Ga4  1  0.000  0.500  0.115  1.0
  Ga  Ga5  1  0.500  0.000  0.885  1.0
  Ga  Ga6  1  0.500  0.000  0.115  1.0
  Ga  Ga7  1  0.500  0.000  0.500  1.0
  Ga  Ga8  1  0.000  0.000  0.699  1.0
  Ga  Ga9  1  0.000  0.500  0.500  1.0
  Fe  Fe10  1  0.500  0.500  0.000  1.0
[/CIF]
.