data_[Na4Tc2N4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tc  1.9000  1.3500  0.7417
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [P2_1]
_cell_length_a [2.9237]
_cell_length_b [9.2106]
_cell_length_c [5.6328]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.9276]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [Na2TcN2]
_chemical_formula_sum '[Na4 Tc2 N4]'
_cell_volume [146.5672]
_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
[
  Na  Na0  2  0.1624  0.3273  0.7919  1
  Na  Na1  2  0.3829  0.1592  0.2814  1
  Tc  Tc2  2  0.0544  0.9938  0.7425  1
  N  N3  2  0.2884  0.5887  0.0639  1
  N  N4  2  0.4960  0.4164  0.4669  1
]