data_GaAgSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.08
_cell_length_b   5.08
_cell_length_c   5.08
_cell_angle_alpha   136.37
_cell_angle_beta   136.37
_cell_angle_gamma   63.4
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaAgSe
_chemical_formula_sum   'Ga1 Ag1 Se1'
_cell_volume   61.5
_cell_formula_units_Z   1
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
  Ga  Ga1  1  0.0  0.0  0.81  1.0
  Ag  Ag0  1  0.0  0.0  0.62  1.0
  Se  Se2  1  0.0  0.0  0.85  1.0

data_GaAgSe
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.34
_cell_length_b   5.34
_cell_length_c   5.08
_cell_angle_alpha   90.0
_cell_angle_beta   121.7
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   GaAgSe
_chemical_formula_sum   'Ga2 Ag2 Se2'
_cell_volume   123.0
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Ga  Ga0  2  0.19  0.0  0.19  1.0
  Ag  Ag1  2  0.38  0.0  0.38  1.0
  Se  Se2  2  0.15  0.0  0.15  1.0

Ga Ag Se
AgGaSe is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two AgGaSe clusters. Ag(1) is bonded in a single-bond geometry to one Ga(1) atom. The Ag(1)-Ga(1) bond length is 0.92 Å. Ga(1) is bonded in a distorted linear geometry to one Ag(1) and one Se(1) atom. The Ga(1)-Se(1) bond length is 0.21 Å. Se(1) is bonded in a single-bond geometry to one Ga(1) atom.