data_[Na4Zn6Si2As8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Zn  1.6500  1.3500  0.8800
  Si  1.9000  1.1000  0.5400
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [16.6426]
_cell_length_b [4.0986]
_cell_length_c [7.1199]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.2672]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Na2Zn3SiAs4]
_chemical_formula_sum '[Na4 Zn6 Si2 As8]'
_cell_volume [439.1996]
_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  0.0042  0.0000  0.0075  1.0
  Na  Na1  2  0.0098  0.5000  0.5038  1.0
  Zn  Zn2  2  0.1773  0.5000  0.3290  1.0
  Zn  Zn3  2  0.1835  0.0000  0.8683  1.0
  Zn  Zn4  2  0.3017  0.5000  0.1243  1.0
  Si  Si5  2  0.3129  0.0000  0.6582  1.0
  As  As6  2  0.1273  0.5000  0.9575  1.0
  As  As7  2  0.1537  0.0000  0.4924  1.0
  As  As8  2  0.3661  0.5000  0.5377  1.0
  As  As9  2  0.3685  0.0000  0.0312  1.0
]