data_[Na4Er2Tc2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Er  1.2400  1.7500  1.0300
  Tc  1.9000  1.3500  0.7417
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.6009]
_cell_length_b [5.7299]
_cell_length_c [9.7479]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.7755]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Na2ErTcO6]
_chemical_formula_sum '[Na4 Er2 Tc2 O12]'
_cell_volume [256.9595]
_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
[
  Na  Na0  4  0.2417  0.5377  0.7509  1
  Er  Er1  2  0.5000  0.0000  0.0000  1
  Tc  Tc2  2  0.0000  0.0000  0.5000  1
  O  O3  4  0.1359  0.7280  0.4521  1
  O  O4  4  0.2306  0.1881  0.4579  1
  O  O5  4  0.3146  0.5248  0.2289  1
]