The crystal structure described by Tm3Ga is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tm(1) is bonded to eight equivalent Tm(1) and four equivalent Ga(1) atoms to form distorted TmTm8Ga4 cuboctahedra that share corners with four equivalent Ga(1)Tm12 cuboctahedra, corners with fourteen equivalent Tm(1)Tm8Ga4 cuboctahedra, edges with six equivalent Ga(1)Tm12 cuboctahedra, edges with twelve equivalent Tm(1)Tm8Ga4 cuboctahedra, faces with four equivalent Ga(1)Tm12 cuboctahedra, and faces with sixteen equivalent Tm(1)Tm8Ga4 cuboctahedra. Ga(1) is bonded to twelve equivalent Tm(1) atoms to form GaTm12 cuboctahedra that share corners with six equivalent Ga(1)Tm12 cuboctahedra, corners with twelve equivalent Tm(1)Tm8Ga4 cuboctahedra, edges with eighteen equivalent Tm(1)Tm8Ga4 cuboctahedra, faces with eight equivalent Ga(1)Tm12 cuboctahedra, and faces with twelve equivalent Tm(1)Tm8Ga4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm3Ga
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.676
_cell_length_b   6.676
_cell_length_c   5.224
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   201.640
_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
  Tm  Tm0  1  0.174  0.347  0.250  1.0
  Tm  Tm1  1  0.653  0.826  0.250  1.0
  Tm  Tm2  1  0.174  0.826  0.250  1.0
  Tm  Tm3  1  0.826  0.653  0.750  1.0
  Tm  Tm4  1  0.347  0.174  0.750  1.0
  Tm  Tm5  1  0.826  0.174  0.750  1.0
  Ga  Ga6  1  0.333  0.667  0.750  1.0
  Ga  Ga7  1  0.667  0.333  0.250  1.0
[/CIF]
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The crystal structure described by Tm3Ga is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. Tm(1) is bonded to eight equivalent Tm(1) and four equivalent Ga(1) atoms to form distorted TmTm8Ga4 cuboctahedra that share corners with four equivalent Ga(1)Tm12 cuboctahedra, corners with fourteen equivalent Tm(1)Tm8Ga4 cuboctahedra, edges with six equivalent Ga(1)Tm12 cuboctahedra, edges with twelve equivalent Tm(1)Tm8Ga4 cuboctahedra, faces with four equivalent Ga(1)Tm12 cuboctahedra, and faces with sixteen equivalent Tm(1)Tm8Ga4 cuboctahedra. Ga(1) is bonded to twelve equivalent Tm(1) atoms to form GaTm12 cuboctahedra that share corners with six equivalent Ga(1)Tm12 cuboctahedra, corners with twelve equivalent Tm(1)Tm8Ga4 cuboctahedra, edges with eighteen equivalent Tm(1)Tm8Ga4 cuboctahedra, faces with eight equivalent Ga(1)Tm12 cuboctahedra, and faces with twelve equivalent Tm(1)Tm8Ga4 cuboctahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Tm3Ga
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.676
_cell_length_b   6.676
_cell_length_c   5.224
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   201.640
_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
  Tm  Tm0  1  0.174  0.347  0.250  1.0
  Tm  Tm1  1  0.653  0.826  0.250  1.0
  Tm  Tm2  1  0.174  0.826  0.250  1.0
  Tm  Tm3  1  0.826  0.653  0.750  1.0
  Tm  Tm4  1  0.347  0.174  0.750  1.0
  Tm  Tm5  1  0.826  0.174  0.750  1.0
  Ga  Ga6  1  0.333  0.667  0.750  1.0
  Ga  Ga7  1  0.667  0.333  0.250  1.0
[/CIF]
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