The material structure described by Ag2Se crystallizes in the orthorhombic Cmce space group. Ag(1) is bonded in a 4-coordinate geometry to four equivalent Se(1) atoms. Se(1) is bonded to eight equivalent Ag(1) atoms to form a mixture of distorted corner and edge-sharing SeAg8 hexagonal bipyramids. is represented by the CIF card [CIF]
data_Ag2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.430
_cell_length_b   4.430
_cell_length_c   8.445
_cell_angle_alpha   108.275
_cell_angle_beta   108.275
_cell_angle_gamma   113.712
_symmetry_Int_Tables_number   1
_cell_volume   124.286
_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
  Ag  Ag0  1  0.213  0.525  0.369  1.0
  Ag  Ag1  1  0.525  0.213  0.869  1.0
  Ag  Ag2  1  0.475  0.787  0.131  1.0
  Ag  Ag3  1  0.787  0.475  0.631  1.0
  Se  Se4  1  0.000  0.000  0.500  1.0
  Se  Se5  1  0.000  0.000  0.000  1.0
[/CIF]
.
The material structure described by Ag2Se crystallizes in the orthorhombic Cmce space group. Ag(1) is bonded in a 4-coordinate geometry to four equivalent Se(1) atoms. Se(1) is bonded to eight equivalent Ag(1) atoms to form a mixture of distorted corner and edge-sharing SeAg8 hexagonal bipyramids. is represented by the CIF card [CIF]
data_Ag2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.430
_cell_length_b   4.430
_cell_length_c   8.445
_cell_angle_alpha   108.275
_cell_angle_beta   108.275
_cell_angle_gamma   113.712
_symmetry_Int_Tables_number   1
_cell_volume   124.286
_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
  Ag  Ag0  1  0.213  0.525  0.369  1.0
  Ag  Ag1  1  0.525  0.213  0.869  1.0
  Ag  Ag2  1  0.475  0.787  0.131  1.0
  Ag  Ag3  1  0.787  0.475  0.631  1.0
  Se  Se4  1  0.000  0.000  0.500  1.0
  Se  Se5  1  0.000  0.000  0.000  1.0
[/CIF]
.