data_[Rb6Ac2Er4Te12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Ac  1.1000  1.9500  1.2600
  Er  1.2400  1.7500  1.0300
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.0154]
_cell_length_b [13.8883]
_cell_length_c [8.9798]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.4094]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb3Ac(ErTe3)2]
_chemical_formula_sum '[Rb6 Ac2 Er4 Te12]'
_cell_volume [953.8417]
_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
[
  Rb  Rb0  4  0.0000  0.1620  0.5000  1
  Rb  Rb1  2  0.0000  0.5000  0.5000  1
  Ac  Ac2  2  0.0000  0.0000  0.0000  1
  Er  Er3  4  0.0000  0.3327  0.0000  1
  Te  Te4  8  0.2445  0.1767  0.2024  1
  Te  Te5  4  0.2136  0.5000  0.2010  1
]