data_[Na2Mg4Sn6Te12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mg  1.3100  1.5000  0.8600
  Sn  1.9600  1.4500  0.8300
  Te  2.1000  1.4000  1.2933
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [19.2410]
_cell_length_b [4.3619]
_cell_length_c [8.9834]
_cell_angle_alpha [90.0000]
_cell_angle_beta [102.1984]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaMg2(SnTe2)3]
_chemical_formula_sum '[Na2 Mg4 Sn6 Te12]'
_cell_volume [736.9257]
_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
[
  Na  Na0  2  0.0000  0.5000  0.0000  1.0
  Mg  Mg1  4  0.1670  0.0000  0.3342  1.0
  Sn  Sn2  4  0.1671  0.0000  0.8343  1.0
  Sn  Sn3  2  0.0000  0.5000  0.5000  1.0
  Te  Te4  4  0.0112  0.0000  0.2633  1.0
  Te  Te5  4  0.1711  0.5000  0.5741  1.0
  Te  Te6  4  0.1712  0.5000  0.1022  1.0
]