data_[Er4Pu2Mg2O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Pu  1.2800  1.7500  0.9675
  Mg  1.3100  1.5000  0.8600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [6.8520]
_cell_length_b [7.1584]
_cell_length_c [6.8559]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Er2PuMgO8]
_chemical_formula_sum '[Er4 Pu2 Mg2 O16]'
_cell_volume [336.2769]
_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
[
  Er  Er0  4  0.0000  0.5000  0.2645  1
  Pu  Pu1  2  0.0000  0.0000  0.0000  1
  Mg  Mg2  2  0.0000  0.0000  0.5000  1
  O  O3  8  0.0000  0.1827  0.2193  1
  O  O4  4  0.2073  0.5000  0.5000  1
  O  O5  4  0.2102  0.5000  0.0000  1
]