data_[Tm2Ta2Se2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tm  1.2500  1.7500  1.0950
  Ta  1.5000  1.4500  0.8200
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P-6m2]
_cell_length_a [3.3795]
_cell_length_b [3.3795]
_cell_length_c [12.8723]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [187]
_chemical_formula_structural [TmTaSe]
_chemical_formula_sum '[Tm2 Ta2 Se2]'
_cell_volume [127.3152]
_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  2  0.0000  0.0000  0.1900  1
  Ta  Ta1  1  0.0000  0.0000  0.5000  1
  Ta  Ta2  1  0.3333  0.6667  0.0000  1
  Se  Se3  2  0.3333  0.6667  0.3636  1
]