data_[Ag8As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ag  1.9300  1.6000  1.0867
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [2.9093]
_cell_length_b [3.9783]
_cell_length_c [20.8163]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [Ag2As]
_chemical_formula_sum '[Ag8 As4]'
_cell_volume [240.9234]
_cell_formula_units_Z [4]
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
[
  Ag  Ag0  4  0.0000  0.2500  0.8085  1
  Ag  Ag1  4  0.0000  0.2500  0.9524  1
  As  As2  4  0.0000  0.2500  0.3812  1
]