data_[Li2Er2As4O14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Er  1.2400  1.7500  1.0300
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2]
_cell_length_a [7.0356]
_cell_length_b [9.0303]
_cell_length_c [5.0364]
_cell_angle_alpha [90.0000]
_cell_angle_beta [103.8140]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [5]
_chemical_formula_structural [LiErAs2O7]
_chemical_formula_sum '[Li2 Er2 As4 O14]'
_cell_volume [310.7252]
_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
[
  Li  Li0  2  0.0000  0.2457  0.0000  1.0
  Er  Er1  2  0.0000  0.6307  0.0000  1.0
  As  As2  4  0.2153  0.9620  0.4091  1.0
  O  O3  4  0.1164  0.4452  0.2871  1.0
  O  O4  4  0.1845  0.7980  0.2435  1.0
  O  O5  4  0.2434  0.1052  0.1991  1.0
  O  O6  2  0.0000  0.0270  0.5000  1.0
]