The compound described by Si2N2Se crystallizes in the orthorhombic Cmc2_1 space group. Si(1) is bonded to three equivalent N(1) and one Se(1) atom to form distorted corner-sharing SiSeN3 tetrahedra. N(1) is bonded in a trigonal planar geometry to three equivalent Si(1) atoms. Se(1) is bonded in a bent 120 degrees geometry to two equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_Si2SeN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.110
_cell_length_b   5.624
_cell_length_c   4.913
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   117.405
_symmetry_Int_Tables_number   1
_cell_volume   149.889
_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  0.623  0.167  0.909  1.0
  Si  Si1  1  0.377  0.543  0.909  1.0
  Si  Si2  1  0.377  0.833  0.409  1.0
  Si  Si3  1  0.623  0.457  0.409  1.0
  Se  Se4  1  0.000  0.780  0.267  1.0
  Se  Se5  1  0.000  0.220  0.767  1.0
  N  N6  1  0.553  0.149  0.254  1.0
  N  N7  1  0.447  0.596  0.254  1.0
  N  N8  1  0.447  0.851  0.754  1.0
  N  N9  1  0.553  0.404  0.754  1.0
[/CIF]
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The compound described by Si2N2Se crystallizes in the orthorhombic Cmc2_1 space group. Si(1) is bonded to three equivalent N(1) and one Se(1) atom to form distorted corner-sharing SiSeN3 tetrahedra. N(1) is bonded in a trigonal planar geometry to three equivalent Si(1) atoms. Se(1) is bonded in a bent 120 degrees geometry to two equivalent Si(1) atoms. is represented by the CIF file [CIF]
data_Si2SeN2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.110
_cell_length_b   5.624
_cell_length_c   4.913
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   117.405
_symmetry_Int_Tables_number   1
_cell_volume   149.889
_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  0.623  0.167  0.909  1.0
  Si  Si1  1  0.377  0.543  0.909  1.0
  Si  Si2  1  0.377  0.833  0.409  1.0
  Si  Si3  1  0.623  0.457  0.409  1.0
  Se  Se4  1  0.000  0.780  0.267  1.0
  Se  Se5  1  0.000  0.220  0.767  1.0
  N  N6  1  0.553  0.149  0.254  1.0
  N  N7  1  0.447  0.596  0.254  1.0
  N  N8  1  0.447  0.851  0.754  1.0
  N  N9  1  0.553  0.404  0.754  1.0
[/CIF]
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