data_[Pm3Mg6V3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Mg  1.3100  1.5000  0.8600
  V  1.6300  1.3500  0.7775
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.3149]
_cell_length_b [5.3149]
_cell_length_c [14.2618]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [PmMg2VO6]
_chemical_formula_sum '[Pm3 Mg6 V3 O18]'
_cell_volume [348.8900]
_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  0.7934  1
  Mg  Mg1  3  0.0000  0.0000  0.0171  1
  Mg  Mg2  3  0.0000  0.0000  0.5212  1
  V  V3  3  0.0000  0.0000  0.3163  1
  O  O4  9  0.0294  0.3474  0.9246  1
  O  O5  9  0.0836  0.7135  0.0801  1
]