data_[K2La1Er1O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  La  1.1000  1.9500  1.1720
  Er  1.2400  1.7500  1.0300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [6.2160]
_cell_length_b [3.5818]
_cell_length_c [6.6360]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.2295]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [K2LaErO4]
_chemical_formula_sum '[K2 La1 Er1 O4]'
_cell_volume [140.3307]
_cell_formula_units_Z [1]
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
[
  K  K0  1  0.0000  0.5000  0.5000  1.0
  K  K1  1  0.5000  0.0000  0.5000  1.0
  La  La2  1  0.5000  0.5000  0.0000  1.0
  Er  Er3  1  0.0000  0.0000  0.0000  1.0
  O  O4  2  0.2152  0.5000  0.1845  1.0
  O  O5  2  0.2544  0.0000  0.8131  1.0
]