data_[Ag4As2]
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 [P1]
_cell_length_a [2.8700]
_cell_length_b [5.6459]
_cell_length_c [19.7124]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [103.3654]
_symmetry_Int_Tables_number [1]
_chemical_formula_structural [Ag2As]
_chemical_formula_sum '[Ag4 As2]'
_cell_volume [310.7631]
_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
[
  Ag  Ag0  1  0.1707  0.4894  0.5104  1
  Ag  Ag1  1  0.4524  0.0117  0.4924  1
  Ag  Ag2  1  0.5531  0.2581  0.6213  1
  Ag  Ag3  1  0.8387  0.7942  0.6091  1
  As  As4  1  0.0820  0.2573  0.3845  1
  As  As5  1  0.2742  0.6964  0.3822  1
]