data_[K2Er2Be2Te6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Er  1.2400  1.7500  1.0300
  Be  1.5700  1.0500  0.5900
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [9.8829]
_cell_length_b [4.2492]
_cell_length_c [10.1961]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.5066]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KErBeTe3]
_chemical_formula_sum '[K2 Er2 Be2 Te6]'
_cell_volume [403.6002]
_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
[
  K  K0  2  0.2055  0.2500  0.2348  1.0
  Er  Er1  2  0.3299  0.7500  0.8577  1.0
  Be  Be2  2  0.0791  0.2500  0.6027  1.0
  Te  Te3  2  0.1064  0.2500  0.8502  1.0
  Te  Te4  2  0.1854  0.7500  0.5308  1.0
  Te  Te5  2  0.4630  0.7500  0.1729  1.0
]