data_Na2LaTa
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.04
_cell_length_b   3.04
_cell_length_c   12.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   118.12
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2LaTa
_chemical_formula_sum   'Na2 La1 Ta1'
_cell_volume   103.58
_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  Na1  1  0.56  0.0  0.43  1.0
  Na  Na2  1  0.56  0.0  0.3  1.0
  La  La0  1  0.0  0.0  0.0  1.0
  Ta  Ta3  1  0.0  0.0  0.37  1.0

data_Na2LaTa
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.04
_cell_length_b   5.36
_cell_length_c   12.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Na2LaTa
_chemical_formula_sum   'Na4 La2 Ta2'
_cell_volume   207.27
_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
  Na  Na0  2  0.06  0.5  0.3  1.0
  Na  Na1  2  0.06  0.5  0.43  1.0
  La  La2  2  0.0  0.0  0.0  1.0
  Ta  Ta3  2  0.0  0.0  0.37  1.0

Na Na La Ta
Na Na La Ta 0 3 o o o 0 3 + o o 0 1 o o o 1 3 o o o 1 3 + o o 2 2 + + o 2 2 o + o 2 2 + o o 