The compound described by Si2N2S crystallizes in the monoclinic Cm space group. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a distorted bent 120 degrees geometry to one N(1), one N(2), and one S(2) atom. In the second Si site, Si(2) is bonded in a 2-coordinate geometry to one N(1), one N(2), and one S(2) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one Si(1) and one Si(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Si(1), one Si(2), and one S(1) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a water-like geometry to two equivalent N(2) atoms. In the second S site, S(2) is bonded in a 4-coordinate geometry to two equivalent Si(1) and two equivalent Si(2) atoms. is represented by the CIF card [CIF]
data_Si2SN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.827
_cell_length_b   7.042
_cell_length_c   5.346
_cell_angle_alpha   90.000
_cell_angle_beta   114.614
_cell_angle_gamma   121.047
_symmetry_Int_Tables_number   1
_cell_volume   192.444
_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  1  0.048  0.185  0.938  1.0
  Si  Si1  1  0.048  0.862  0.938  1.0
  Si  Si2  1  0.579  0.950  0.004  1.0
  Si  Si3  1  0.579  0.629  0.004  1.0
  S  S4  1  0.685  0.343  0.712  1.0
  S  S5  1  0.864  0.932  0.418  1.0
  N  N6  1  0.328  0.921  0.006  1.0
  N  N7  1  0.328  0.407  0.006  1.0
  N  N8  1  0.790  0.192  0.921  1.0
  N  N9  1  0.790  0.598  0.921  1.0
[/CIF]
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The compound described by Si2N2S crystallizes in the monoclinic Cm space group. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a distorted bent 120 degrees geometry to one N(1), one N(2), and one S(2) atom. In the second Si site, Si(2) is bonded in a 2-coordinate geometry to one N(1), one N(2), and one S(2) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one Si(1) and one Si(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Si(1), one Si(2), and one S(1) atom. There are two inequivalent S sites. In the first S site, S(1) is bonded in a water-like geometry to two equivalent N(2) atoms. In the second S site, S(2) is bonded in a 4-coordinate geometry to two equivalent Si(1) and two equivalent Si(2) atoms. is represented by the CIF card [CIF]
data_Si2SN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.827
_cell_length_b   7.042
_cell_length_c   5.346
_cell_angle_alpha   90.000
_cell_angle_beta   114.614
_cell_angle_gamma   121.047
_symmetry_Int_Tables_number   1
_cell_volume   192.444
_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  1  0.048  0.185  0.938  1.0
  Si  Si1  1  0.048  0.862  0.938  1.0
  Si  Si2  1  0.579  0.950  0.004  1.0
  Si  Si3  1  0.579  0.629  0.004  1.0
  S  S4  1  0.685  0.343  0.712  1.0
  S  S5  1  0.864  0.932  0.418  1.0
  N  N6  1  0.328  0.921  0.006  1.0
  N  N7  1  0.328  0.407  0.006  1.0
  N  N8  1  0.790  0.192  0.921  1.0
  N  N9  1  0.790  0.598  0.921  1.0
[/CIF]
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