data_Ta2Si
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.28
_cell_length_b   6.28
_cell_length_c   6.28
_cell_angle_alpha   147.65
_cell_angle_beta   129.53
_cell_angle_gamma   61.23
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2Si
_chemical_formula_sum   'Ta4 Si2'
_cell_volume   101.02
_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
  Ta  Ta2  1  0.0  0.06  0.0  1.0
  Ta  Ta3  1  0.75  0.0  0.14  1.0
  Ta  Ta4  1  0.0  0.29  0.0  1.0
  Ta  Ta5  1  0.0  0.68  0.26  1.0
  Si  Si0  1  0.0  0.0  0.0  1.0
  Si  Si1  1  0.0  0.0  0.8  1.0

data_Ta2Si
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.5
_cell_length_b   5.35
_cell_length_c   6.28
_cell_angle_alpha   115.23
_cell_angle_beta   106.18
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ta2Si
_chemical_formula_sum   'Ta4 Si2'
_cell_volume   101.02
_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
  Ta  Ta0  1  0.0  0.29  0.29  1.0
  Ta  Ta1  1  0.0  0.06  0.06  1.0
  Ta  Ta2  1  0.6  0.86  0.6  1.0
  Ta  Ta3  1  0.74  0.42  0.42  1.0
  Si  Si4  1  0.2  0.2  0.2  1.0
  Si  Si5  1  1.0  1.0  1.0  1.0

Ta Ta Ta Ta Si Si