data_[Ca1Ac1Tb2S4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Ac  1.1000  1.9500  1.2600
  Tb  1.1000  1.7500  0.9815
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [P2/m]
_cell_length_a [7.0291]
_cell_length_b [4.0218]
_cell_length_c [7.0524]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.9842]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [10]
_chemical_formula_structural [CaAc(TbS2)2]
_chemical_formula_sum '[Ca1 Ac1 Tb2 S4]'
_cell_volume [188.5244]
_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
[
  Ca  Ca0  1  0.5000  0.0000  0.5000  1
  Tb  Tb1  1  0.0000  0.0000  0.0000  1
  Ac  Ac2  1  0.0000  0.5000  0.5000  1
  Tb  Tb3  1  0.5000  0.5000  0.0000  1
  S  S4  2  0.2553  0.5000  0.2378  1
  S  S5  2  0.2672  0.0000  0.7689  1
]