data_La2TaTc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.97
_cell_length_b   9.97
_cell_length_c   9.97
_cell_angle_alpha   19.43
_cell_angle_beta   19.43
_cell_angle_gamma   19.43
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2TaTc
_chemical_formula_sum   'La2 Ta1 Tc1'
_cell_volume   95.96
_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
  La  La0  1  0.0  0.0  0.56  1.0
  La  La1  1  0.0  0.0  0.79  1.0
  Ta  Ta2  1  0.0  0.0  0.67  1.0
  Tc  Tc3  1  0.0  0.0  0.0  1.0

data_La2TaTc
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.83
_cell_length_b   3.37
_cell_length_c   9.97
_cell_angle_alpha   90.0
_cell_angle_beta   101.24
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   La2TaTc
_chemical_formula_sum   'La4 Ta2 Tc2'
_cell_volume   191.92
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  La  La0  2  0.0  0.0  0.21  1.0
  La  La1  2  0.0  0.0  0.44  1.0
  Ta  Ta2  2  0.0  0.0  0.33  1.0
  Tc  Tc3  2  0.0  0.0  0.0  1.0

La La Ta Tc