data_[Na2Be2Ag2Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Be  1.5700  1.0500  0.5900
  Ag  1.9300  1.6000  1.0867
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.4817]
_cell_length_b [6.8761]
_cell_length_c [7.6202]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.4810]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaBeAgCl4]
_chemical_formula_sum '[Na2 Be2 Ag2 Cl8]'
_cell_volume [336.7312]
_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  0.2269  0.2500  0.5452  1.0
  Be  Be1  2  0.2695  0.7500  0.3034  1.0
  Ag  Ag2  2  0.1817  0.2500  0.0223  1.0
  Cl  Cl3  4  0.0690  0.5153  0.2498  1.0
  Cl  Cl4  2  0.3826  0.7500  0.5570  1.0
  Cl  Cl5  2  0.4875  0.7500  0.1362  1.0
]