data_[Si2H2N2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  H  2.2000  0.2500  0.0000
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [6.6488]
_cell_length_b [3.5634]
_cell_length_c [2.8930]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.6013]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [SiHNO]
_chemical_formula_sum '[Si2 H2 N2 O2]'
_cell_volume [64.5696]
_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  0.2091  0.5000  0.3272  1
  H  H1  2  0.0196  0.5000  0.5098  1
  N  N2  2  0.3699  0.5000  0.9433  1
  O  O3  2  0.1006  0.0000  0.1281  1
]