data_[Pr2Nd2Hg2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pr  1.1300  1.8500  1.0600
  Nd  1.1400  1.8500  1.2765
  Hg  2.0000  1.5000  1.2450
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.8064]
_cell_length_b [3.8375]
_cell_length_c [13.8182]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [PrNdHgO]
_chemical_formula_sum '[Pr2 Nd2 Hg2 O2]'
_cell_volume [201.8475]
_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
[
  Pr  Pr0  2  0.0000  0.0000  0.6696  1.0
  Nd  Nd1  2  0.0000  0.0000  0.9744  1.0
  Hg  Hg2  2  0.0000  0.0000  0.3215  1.0
  O  O3  2  0.0000  0.5000  0.5694  1.0
]