data_[Sr8Cu20As16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Cu  1.9000  1.3500  0.8200
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Fmmm]
_cell_length_a [5.6639]
_cell_length_b [10.7877]
_cell_length_c [14.1836]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [69]
_chemical_formula_structural [Sr2Cu5As4]
_chemical_formula_sum '[Sr8 Cu20 As16]'
_cell_volume [866.6205]
_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
[
  Sr  Sr0  8  0.0000  0.0000  0.1472  1
  Cu  Cu1  8  0.2500  0.2500  0.0000  1
  Cu  Cu2  8  0.2500  0.2500  0.2500  1
  Cu  Cu3  4  0.0000  0.0000  0.5000  1
  As  As4  16  0.0000  0.1519  0.3710  1
]