data_[Rb4Er8Cu4Te16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Er  1.2400  1.7500  1.0300
  Cu  1.9000  1.3500  0.8200
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [4.4006]
_cell_length_b [15.2451]
_cell_length_c [15.5219]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [RbEr2CuTe4]
_chemical_formula_sum '[Rb4 Er8 Cu4 Te16]'
_cell_volume [1041.3276]
_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
[
  Rb  Rb0  4  0.0000  0.1136  0.7500  1.0
  Er  Er1  8  0.0000  0.3667  0.5650  1.0
  Cu  Cu2  4  0.0000  0.1623  0.2500  1.0
  Te  Te3  8  0.0000  0.2630  0.1089  1.0
  Te  Te4  4  0.0000  0.0000  0.0000  1.0
  Te  Te5  4  0.0000  0.4320  0.7500  1.0
]