data_[Pm2Mg2Tc4O16]
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
  Tc  1.9000  1.3500  0.7417
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [5.1590]
_cell_length_b [5.1590]
_cell_length_c [11.2693]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [PmMg(TcO4)2]
_chemical_formula_sum '[Pm2 Mg2 Tc4 O16]'
_cell_volume [299.9391]
_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
[
  Pm  Pm0  2  0.0000  0.5000  0.2500  1
  Mg  Mg1  2  0.0000  0.0000  0.0000  1
  Tc  Tc2  2  0.0000  0.0000  0.5000  1
  Tc  Tc3  2  0.0000  0.5000  0.7500  1
  O  O4  8  0.1588  0.7561  0.8373  1
  O  O5  8  0.1744  0.2529  0.4199  1
]