data_[Ba2Sr2Cu4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Sr  0.9500  2.0000  1.3200
  Cu  1.9000  1.3500  0.8200
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [4.4724]
_cell_length_b [4.4117]
_cell_length_c [12.2028]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [BaSrCu2]
_chemical_formula_sum '[Ba2 Sr2 Cu4]'
_cell_volume [240.7725]
_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
[
  Ba  Ba0  2  0.5000  0.0000  0.3922  1.0
  Sr  Sr1  2  0.0000  0.0000  0.1182  1.0
  Cu  Cu2  2  0.0000  0.0000  0.7959  1.0
  Cu  Cu3  2  0.5000  0.0000  0.6946  1.0
]