data_[K2Tb2Mg2Te6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Tb  1.1000  1.7500  0.9815
  Mg  1.3100  1.5000  0.8600
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [9.6582]
_cell_length_b [4.5201]
_cell_length_c [10.7187]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.6068]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [KTbMgTe3]
_chemical_formula_sum '[K2 Tb2 Mg2 Te6]'
_cell_volume [446.0183]
_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  0.2079  0.2500  0.2321  1.0
  Tb  Tb1  2  0.3298  0.7500  0.8647  1.0
  Mg  Mg2  2  0.0841  0.2500  0.6087  1.0
  Te  Te3  2  0.1068  0.2500  0.8704  1.0
  Te  Te4  2  0.2189  0.7500  0.5390  1.0
  Te  Te5  2  0.4612  0.7500  0.1624  1.0
]