data_[Na2Mn2Ag2Se6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mn  1.5500  1.4000  0.6483
  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 [7.9525]
_cell_length_b [3.7865]
_cell_length_c [9.1722]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.9076]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaMnAgSe3]
_chemical_formula_sum '[Na2 Mn2 Ag2 Se6]'
_cell_volume [266.9000]
_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
[
  Na  Na0  2  0.2706  0.2500  0.3056  1.0
  Mn  Mn1  2  0.3205  0.7500  0.8565  1.0
  Ag  Ag2  2  0.0476  0.2500  0.6171  1.0
  Se  Se3  2  0.1278  0.2500  0.9070  1.0
  Se  Se4  2  0.2832  0.7500  0.5713  1.0
  Se  Se5  2  0.4601  0.7500  0.1364  1.0
]