data_[Er4Cr4Br4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Cr  1.6600  1.4000  0.9400
  Br  2.9600  1.1500  0.8825
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [10.1487]
_cell_length_b [7.1108]
_cell_length_c [6.7086]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.1439]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [ErCrBrO4]
_chemical_formula_sum '[Er4 Cr4 Br4 O16]'
_cell_volume [467.3196]
_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
[
  Er  Er0  4  0.2335  0.0000  0.1207  1.0
  Cr  Cr1  4  0.1387  0.5000  0.2677  1.0
  Br  Br2  4  0.0155  0.0000  0.7548  1.0
  O  O3  8  0.1907  0.3153  0.1469  1.0
  O  O4  4  0.0286  0.5000  0.7752  1.0
  O  O5  4  0.2089  0.5000  0.5179  1.0
]