data_Na2NbTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.29
_cell_length_b   6.29
_cell_length_c   6.29
_cell_angle_alpha   150.73
_cell_angle_beta   140.68
_cell_angle_gamma   49.76
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2NbTc
_chemical_formula_sum   'Na2 Nb1 Tc1'
_cell_volume   76.61
_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
  Na  Na0  1  0.59  0.0  0.02  1.0
  Na  Na1  1  0.0  0.11  0.68  1.0
  Nb  Nb2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.0  0.0  0.7  1.0

data_Na2NbTc
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.18
_cell_length_b   4.23
_cell_length_c   6.29
_cell_angle_alpha   109.66
_cell_angle_beta   104.63
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2NbTc
_chemical_formula_sum   'Na2 Nb1 Tc1'
_cell_volume   76.61
_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
  Na  Na0  1  0.0  0.02  0.44  1.0
  Na  Na1  1  0.89  0.56  0.56  1.0
  Nb  Nb2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.0  0.7  0.7  1.0

Na Na Nb Tc
Na Na Nb Tc 0 3 o o - 0 3 + o o 0 1 o o - 0 1 + o o 0 2 + o o 1 3 o o o 2 3 o o - 