data_Na2ReTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.7
_cell_length_b   4.7
_cell_length_c   6.36
_cell_angle_alpha   90.61
_cell_angle_beta   90.61
_cell_angle_gamma   31.78
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2ReTc
_chemical_formula_sum   'Na2 Re1 Tc1'
_cell_volume   74.09
_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  0.01  0.0  0.01  1.0
  Na  Na1  1  0.19  0.0  0.75  1.0
  Re  Re2  1  0.52  0.0  0.88  1.0
  Tc  Tc3  1  0.75  0.0  0.9  1.0

data_Na2ReTc
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.58
_cell_length_b   4.7
_cell_length_c   6.36
_cell_angle_alpha   90.61
_cell_angle_beta   90.0
_cell_angle_gamma   105.89
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2ReTc
_chemical_formula_sum   'Na2 Re1 Tc1'
_cell_volume   74.09
_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  0.81  0.25  1.0
  Na  Na1  1  0.0  0.99  0.99  1.0
  Tc  Tc2  1  0.0  0.25  0.1  1.0
  Re  Re3  1  0.0  0.48  0.12  1.0

Na Na Re Tc
Na Na Re Tc 0 3 - o - 0 1 o o - 1 2 o o o 2 3 o o o 