data_[Sr2Tb2Ag2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Tb  1.1000  1.7500  0.9815
  Ag  1.9300  1.6000  1.0867
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [8.5013]
_cell_length_b [4.1879]
_cell_length_c [9.3580]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.2120]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [SrTbAgSe3]
_chemical_formula_sum '[Sr2 Tb2 Ag2 Se6]'
_cell_volume [322.9701]
_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
[
  Sr  Sr0  2  0.1983  0.2500  0.2434  1.0
  Tb  Tb1  2  0.3233  0.7500  0.8343  1.0
  Ag  Ag2  2  0.0908  0.2500  0.5869  1.0
  Se  Se3  2  0.0976  0.2500  0.8718  1.0
  Se  Se4  2  0.2587  0.7500  0.5158  1.0
  Se  Se5  2  0.4376  0.7500  0.1552  1.0
]