data_[Ac2Fe2B2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Fe  1.8300  1.4000  0.8525
  B  2.0400  0.8500  0.4100
]
_symmetry_space_group_name_H-M [P4/nmm]
_cell_length_a [3.7346]
_cell_length_b [3.7346]
_cell_length_c [8.6413]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [129]
_chemical_formula_structural [AcFeB]
_chemical_formula_sum '[Ac2 Fe2 B2]'
_cell_volume [120.5225]
_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
[
  Ac  Ac0  2  0.0000  0.5000  0.2161  1
  Fe  Fe1  2  0.0000  0.0000  0.5000  1
  B  B2  2  0.0000  0.5000  0.5903  1
]