data_AgPSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.28
_cell_length_b   6.28
_cell_length_c   6.28
_cell_angle_alpha   153.41
_cell_angle_beta   140.12
_cell_angle_gamma   48.58
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgPSe
_chemical_formula_sum   'Ag1 P1 Se1'
_cell_volume   70.82
_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
  Ag  Ag0  1  0.0  0.0  0.4  1.0
  P  P1  1  0.0  0.0  0.11  1.0
  Se  Se2  1  0.0  0.0  0.38  1.0

data_AgPSe
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.89
_cell_length_b   4.28
_cell_length_c   6.28
_cell_angle_alpha   109.94
_cell_angle_beta   103.29
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgPSe
_chemical_formula_sum   'Ag1 P1 Se1'
_cell_volume   70.82
_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
  Ag  Ag0  1  0.0  0.4  0.4  1.0
  P  P1  1  0.0  0.11  0.11  1.0
  Se  Se2  1  0.0  0.38  0.38  1.0

Ag P Se
Ag P Se 0 2 o o o 0 1 o o o 1 2 o o o 
AgPSe crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one AgPSe cluster. Ag(1) is bonded in a single-bond geometry to one Se(1) atom. The Ag(1)-Se(1) bond length is 0.12 Å. P(1) is bonded in a single-bond geometry to one Se(1) atom. The P(1)-Se(1) bond length is 1.67 Å. Se(1) is bonded in a distorted single-bond geometry to one Ag(1) and one P(1) atom.