The material structure described by AgSi2N3 crystallizes in the trigonal P3_121 space group. Ag(1) is bonded in a linear geometry to two equivalent N(2) atoms. Si(1) is bonded in a 6-coordinate geometry to three equivalent N(1) and three equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. In the second N site, N(2) is bonded to one Ag(1) and three equivalent Si(1) atoms to form corner-sharing NSi3Ag tetrahedra. is represented by the CIF card [CIF]
data_Si2AgN3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.857
_cell_length_b   2.857
_cell_length_c   25.745
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   181.958
_cell_formula_units_Z   3
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  0.331  0.022  0.115  1.0
  Si  Si1  1  0.691  0.669  0.782  1.0
  Si  Si2  1  0.978  0.309  0.448  1.0
  Si  Si3  1  0.669  0.691  0.218  1.0
  Si  Si4  1  0.022  0.331  0.885  1.0
  Si  Si5  1  0.309  0.978  0.552  1.0
  Ag  Ag6  1  0.000  0.351  0.667  1.0
  Ag  Ag7  1  0.351  0.000  0.333  1.0
  Ag  Ag8  1  0.649  0.649  0.000  1.0
  N  N9  1  0.000  0.206  0.167  1.0
  N  N10  1  0.206  0.000  0.833  1.0
  N  N11  1  0.794  0.794  0.500  1.0
  N  N12  1  0.328  0.984  0.418  1.0
  N  N13  1  0.656  0.672  0.085  1.0
  N  N14  1  0.016  0.344  0.752  1.0
  N  N15  1  0.672  0.656  0.915  1.0
  N  N16  1  0.984  0.328  0.582  1.0
  N  N17  1  0.344  0.016  0.248  1.0
[/CIF]
.
The material structure described by AgSi2N3 crystallizes in the trigonal P3_121 space group. Ag(1) is bonded in a linear geometry to two equivalent N(2) atoms. Si(1) is bonded in a 6-coordinate geometry to three equivalent N(1) and three equivalent N(2) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. In the second N site, N(2) is bonded to one Ag(1) and three equivalent Si(1) atoms to form corner-sharing NSi3Ag tetrahedra. is represented by the CIF card [CIF]
data_Si2AgN3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.857
_cell_length_b   2.857
_cell_length_c   25.745
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   181.958
_cell_formula_units_Z   3
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  0.331  0.022  0.115  1.0
  Si  Si1  1  0.691  0.669  0.782  1.0
  Si  Si2  1  0.978  0.309  0.448  1.0
  Si  Si3  1  0.669  0.691  0.218  1.0
  Si  Si4  1  0.022  0.331  0.885  1.0
  Si  Si5  1  0.309  0.978  0.552  1.0
  Ag  Ag6  1  0.000  0.351  0.667  1.0
  Ag  Ag7  1  0.351  0.000  0.333  1.0
  Ag  Ag8  1  0.649  0.649  0.000  1.0
  N  N9  1  0.000  0.206  0.167  1.0
  N  N10  1  0.206  0.000  0.833  1.0
  N  N11  1  0.794  0.794  0.500  1.0
  N  N12  1  0.328  0.984  0.418  1.0
  N  N13  1  0.656  0.672  0.085  1.0
  N  N14  1  0.016  0.344  0.752  1.0
  N  N15  1  0.672  0.656  0.915  1.0
  N  N16  1  0.984  0.328  0.582  1.0
  N  N17  1  0.344  0.016  0.248  1.0
[/CIF]
.