data_[Si2As10]
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
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [10.9156]
_cell_length_b [3.5375]
_cell_length_c [7.2636]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.3270]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [SiAs5]
_chemical_formula_sum '[Si2 As10]'
_cell_volume [257.5484]
_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  0.2124  0.5000  0.8285  1
  As  As1  2  0.0247  0.0000  0.7931  1
  As  As2  2  0.0442  0.0000  0.1510  1
  As  As3  2  0.2406  0.5000  0.3154  1
  As  As4  2  0.3057  0.0000  0.6416  1
  As  As5  2  0.3391  0.0000  0.1039  1
]