data_[Na4Sr2Zn2As4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Zn  1.6500  1.3500  0.8800
  As  2.1800  1.1500  0.6600
]
_symmetry_space_group_name_H-M [Pmc2_1]
_cell_length_a [4.4393]
_cell_length_b [8.5404]
_cell_length_c [7.6523]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [Na2SrZnAs2]
_chemical_formula_sum '[Na4 Sr2 Zn2 As4]'
_cell_volume [290.1209]
_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  0.1603  0.3541  1.0
  Na  Na1  2  0.5000  0.0800  0.0281  1.0
  Sr  Sr2  2  0.0000  0.4429  0.9965  1.0
  Zn  Zn3  2  0.5000  0.3110  0.6490  1.0
  As  As4  2  0.0000  0.1677  0.7320  1.0
  As  As5  2  0.5000  0.3792  0.2860  1.0
]