data_[Si8S4N8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  S  2.5800  1.0000  0.8800
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [11.3827]
_cell_length_b [7.0420]
_cell_length_c [5.3464]
_cell_angle_alpha [90.0000]
_cell_angle_beta [116.0892]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [Si2SN2]
_chemical_formula_sum '[Si8 S4 N8]'
_cell_volume [384.8874]
_cell_formula_units_Z [4]
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  4  0.0239  0.1615  0.1094  1
  Si  Si1  4  0.2896  0.3392  0.5753  1
  S  S2  2  0.3427  0.0000  0.9739  1
  S  S3  2  0.4319  0.5000  0.4459  1
  N  N4  4  0.1640  0.2428  0.3218  1
  N  N5  4  0.3948  0.2032  0.8689  1
]