data_[Pm8Nb4Tc4N20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pm  1.1300  1.8500  1.1100
  Nb  1.6000  1.4500  0.8200
  Tc  1.9000  1.3500  0.7417
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.3256]
_cell_length_b [13.4729]
_cell_length_c [10.4677]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Pm2NbTcN5]
_chemical_formula_sum '[Pm8 Nb4 Tc4 N20]'
_cell_volume [469.0094]
_cell_formula_units_Z [4]
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  4  0.0000  0.1109  0.6993  1
  Pm  Pm1  4  0.0000  0.1445  0.2958  1
  Nb  Nb2  4  0.0000  0.2211  0.0118  1
  Tc  Tc3  4  0.0000  0.4756  0.4621  1
  N  N4  4  0.0000  0.0445  0.0455  1
  N  N5  4  0.0000  0.2838  0.6467  1
  N  N6  4  0.0000  0.3199  0.3784  1
  N  N7  4  0.0000  0.3654  0.9996  1
  N  N8  4  0.0000  0.4900  0.7849  1
]