data_[Sm8Cu4Au4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Cu  1.9000  1.3500  0.8200
  Au  2.5400  1.3500  1.0700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.5650]
_cell_length_b [13.0118]
_cell_length_c [10.6514]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Sm2CuAuO5]
_chemical_formula_sum '[Sm8 Cu4 Au4 O20]'
_cell_volume [494.0891]
_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
[
  Sm  Sm0  4  0.0000  0.1064  0.6915  1
  Sm  Sm1  4  0.0000  0.1367  0.3322  1
  Cu  Cu2  4  0.0000  0.2150  0.0544  1
  Au  Au3  4  0.0000  0.4488  0.4713  1
  O  O4  4  0.0000  0.0746  0.1155  1
  O  O5  4  0.0000  0.2710  0.5972  1
  O  O6  4  0.0000  0.3022  0.2775  1
  O  O7  4  0.0000  0.3526  0.9950  1
  O  O8  4  0.0000  0.4844  0.7894  1
]