data_[Sr8Sn4As8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Sn  1.9600  1.4500  0.8300
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [9.7259]
_cell_length_b [6.3114]
_cell_length_c [10.4284]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Sr2SnAs2]
_chemical_formula_sum '[Sr8 Sn4 As8]'
_cell_volume [640.1460]
_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  4  0.0386  0.7500  0.6498  1
  Sr  Sr1  4  0.1360  0.7500  0.0667  1
  Sn  Sn2  4  0.2305  0.2500  0.8587  1
  As  As3  4  0.0290  0.2500  0.6676  1
  As  As4  4  0.1427  0.2500  0.0960  1
]