data_[Sr8Er4Al4Te20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Er  1.2400  1.7500  1.0300
  Al  1.6100  1.2500  0.6750
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [4.3788]
_cell_length_b [20.0658]
_cell_length_c [13.8492]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Sr2ErAlTe5]
_chemical_formula_sum '[Sr8 Er4 Al4 Te20]'
_cell_volume [1216.8443]
_cell_formula_units_Z [4]
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
[
  Sr  Sr0  4  0.0000  0.1203  0.6825  1
  Sr  Sr1  4  0.0000  0.1230  0.3237  1
  Er  Er2  4  0.0000  0.2057  0.0266  1
  Al  Al3  4  0.0000  0.4369  0.4312  1
  Te  Te4  4  0.0000  0.0465  0.0427  1
  Te  Te5  4  0.0000  0.2933  0.6769  1
  Te  Te6  4  0.0000  0.3112  0.3673  1
  Te  Te7  4  0.0000  0.3544  0.0051  1
  Te  Te8  4  0.0000  0.4996  0.2681  1
]