data_[Sr4Cu4O10]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pbam]
_cell_length_a [5.5465]
_cell_length_b [11.0375]
_cell_length_c [3.7515]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [55]
_chemical_formula_structural [Sr2Cu2O5]
_chemical_formula_sum '[Sr4 Cu4 O10]'
_cell_volume [229.6673]
_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
[
  Sr  Sr0  4  0.2130  0.8650  0.5000  1.0
  Cu  Cu1  4  0.2422  0.6226  0.0000  1.0
  O  O2  4  0.0175  0.2692  0.0000  1.0
  O  O3  4  0.2071  0.5962  0.5000  1.0
  O  O4  2  0.0000  0.0000  0.0000  1.0
]