data_[Si2As2Cl2]
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 [Pmc2_1]
_cell_length_a [15.0000]
_cell_length_b [7.9696]
_cell_length_c [6.4799]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [SiAsCl]
_chemical_formula_sum '[Si2 As2 Cl2]'
_cell_volume [774.6345]
_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  0.5000  0.0801  0.3055  1
  As  As1  2  0.5000  0.1720  0.9711  1
  Cl  Cl2  2  0.5000  0.3014  0.4739  1
]