data_[Ta18Co21]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ta  1.5000  1.4500  0.8200
  Co  1.8800  1.3500  0.7683
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [4.8600]
_cell_length_b [4.8600]
_cell_length_c [26.1160]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Ta6Co7]
_chemical_formula_sum '[Ta18 Co21]'
_cell_volume [534.2027]
_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
[
  Ta  Ta0  6  0.0000  0.0000  0.0515  1.0
  Ta  Ta1  6  0.0000  0.0000  0.1573  1.0
  Ta  Ta2  6  0.0000  0.0000  0.3358  1.0
  Co  Co3  18  0.0033  0.5016  0.0905  1.0
  Co  Co4  3  -0.0000  -0.0000  0.5000  1.0
]