data_[Pm3Ni6Te3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Ni  1.9100  1.3500  0.7400
  Te  2.1000  1.4000  1.2933
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.4802]
_cell_length_b [5.4802]
_cell_length_c [14.2555]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [PmNi2TeO6]
_chemical_formula_sum '[Pm3 Ni6 Te3 O18]'
_cell_volume [370.7699]
_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
[
  Pm  Pm0  3  0.0000  0.0000  0.2028  1
  Ni  Ni1  3  0.0000  0.0000  0.4763  1
  Ni  Ni2  3  0.0000  0.0000  0.9864  1
  Te  Te3  3  0.0000  0.0000  0.6833  1
  O  O4  9  0.0159  0.3683  0.7432  1
  O  O5  9  0.0352  0.6197  0.2534  1
]