data_[Ac6Ta3Sn3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Ta  1.5000  1.4500  0.8200
  Sn  1.9600  1.4500  0.8300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [3.4644]
_cell_length_b [3.4644]
_cell_length_c [36.0016]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Ac2TaSn]
_chemical_formula_sum '[Ac6 Ta3 Sn3]'
_cell_volume [374.2127]
_cell_formula_units_Z [3]
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
[
  Ac  Ac0  6  0.0000  0.0000  0.0863  1
  Ta  Ta1  3  0.0000  0.0000  0.0000  1
  Sn  Sn2  3  -0.0000  -0.0000  0.5000  1
]