data_[Fe1As1Cl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Fe  1.8300  1.4000  0.8525
  As  2.1800  1.1500  0.6600
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P4/mmm]
_cell_length_a [2.9645]
_cell_length_b [2.9645]
_cell_length_c [11.1891]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [123]
_chemical_formula_structural [FeAsCl2]
_chemical_formula_sum '[Fe1 As1 Cl2]'
_cell_volume [98.3346]
_cell_formula_units_Z [1]
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
[
  Fe  Fe0  1  0.5000  0.5000  0.0000  1
  As  As1  1  0.5000  0.5000  0.5000  1
  Cl  Cl2  2  0.0000  0.0000  0.1358  1
]