data_La2Ta
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.47
_cell_length_b   3.47
_cell_length_c   16.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   La2Ta
_chemical_formula_sum   'La4 Ta2'
_cell_volume   174.72
_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
  La  La0  1  0.74  0.0  0.84  1.0
  La  La1  1  0.74  0.0  0.53  1.0
  La  La2  1  0.0  0.01  0.19  1.0
  La  La3  1  0.0  0.01  0.87  1.0
  Ta  Ta4  1  0.74  0.0  0.42  1.0
  Ta  Ta5  1  0.0  0.01  0.29  1.0

data_La2Ta
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   3.47
_cell_length_b   6.02
_cell_length_c   16.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   La2Ta
_chemical_formula_sum   'La8 Ta4'
_cell_volume   349.44
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-x, y, -z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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  4  0.13  0.5  0.51  1.0
  La  La1  4  0.13  0.5  0.83  1.0
  Ta  Ta2  4  0.13  0.5  0.94  1.0

La La La La Ta Ta