data_[Pm1V1Si2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  V  1.6300  1.3500  0.7775
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [5.1946]
_cell_length_b [5.1946]
_cell_length_c [6.4951]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [PmV(SiO4)2]
_chemical_formula_sum '[Pm1 V1 Si2 O8]'
_cell_volume [151.7833]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.5000  1
  V  V1  1  0.0000  0.0000  0.0000  1
  Si  Si2  2  0.3333  0.6667  0.7324  1
  O  O3  6  0.1621  0.3243  0.8196  1
  O  O4  2  0.3333  0.6667  0.4858  1
]