data_[Y2Tm2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Tm  1.2500  1.7500  1.0950
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [18.6375]
_cell_length_b [3.8563]
_cell_length_c [14.5601]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [YTmSe3]
_chemical_formula_sum '[Y2 Tm2 Se6]'
_cell_volume [1046.4512]
_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
[
  Y  Y0  2  0.0000  0.0000  0.8722  1
  Tm  Tm1  2  0.0000  0.0000  0.5864  1
  Se  Se2  4  0.0977  0.0000  0.0087  1
  Se  Se3  2  0.0000  0.0000  0.2373  1
]