data_[Sr3Pm6Hf3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Pm  1.1300  1.8500  1.1100
  Hf  1.3000  1.5500  0.8500
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.9318]
_cell_length_b [5.9318]
_cell_length_c [15.4366]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [SrPm2HfO6]
_chemical_formula_sum '[Sr3 Pm6 Hf3 O18]'
_cell_volume [470.3931]
_cell_formula_units_Z [3]
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
[
  Sr  Sr0  3  0.0000  0.0000  0.8006  1
  Pm  Pm1  3  0.0000  0.0000  0.0237  1
  Pm  Pm2  3  0.0000  0.0000  0.5291  1
  Hf  Hf3  3  0.0000  0.0000  0.3163  1
  O  O4  9  0.0379  0.3383  0.9206  1
  O  O5  9  0.0736  0.6831  0.0768  1
]