data_[Si2As4Cl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  As  2.1800  1.1500  0.6600
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Cmm2]
_cell_length_a [3.3635]
_cell_length_b [5.3991]
_cell_length_c [10.3739]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [35]
_chemical_formula_structural [SiAs2Cl]
_chemical_formula_sum '[Si2 As4 Cl2]'
_cell_volume [188.3883]
_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
[
  Si  Si0  2  0.0000  0.5000  0.2738  1
  As  As1  2  0.0000  0.0000  0.9779  1
  As  As2  2  0.0000  0.5000  0.8024  1
  Cl  Cl3  2  0.0000  0.0000  0.4458  1
]