data_[Rb2Sr2Cu2Cl8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Sr  0.9500  2.0000  1.3200
  Cu  1.9000  1.3500  0.8200
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.7423]
_cell_length_b [6.9970]
_cell_length_c [9.0265]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.9397]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [RbSrCuCl4]
_chemical_formula_sum '[Rb2 Sr2 Cu2 Cl8]'
_cell_volume [402.7848]
_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
[
  Rb  Rb0  2  0.2554  0.2500  0.0610  1.0
  Sr  Sr1  2  0.2307  0.2500  0.5539  1.0
  Cu  Cu2  2  0.2270  0.7500  0.3178  1.0
  Cl  Cl3  4  0.0140  0.5049  0.7169  1.0
  Cl  Cl4  2  0.4173  0.7500  0.1499  1.0
  Cl  Cl5  2  0.4337  0.7500  0.5800  1.0
]