data_AgSe3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.11
_cell_length_b   6.11
_cell_length_c   4.06
_cell_angle_alpha   106.85
_cell_angle_beta   106.85
_cell_angle_gamma   36.9
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgSe3
_chemical_formula_sum   'Ag1 Se3'
_cell_volume   86.64
_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  0.17  0.0  0.93  1.0
  Se  Se1  1  0.0  0.0  0.0  1.0
  Se  Se2  1  0.82  0.0  0.93  1.0
  Se  Se3  1  0.53  0.0  0.94  1.0

data_AgSe3
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.87
_cell_length_b   4.06
_cell_length_c   6.11
_cell_angle_alpha   106.85
_cell_angle_beta   108.45
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgSe3
_chemical_formula_sum   'Ag1 Se3'
_cell_volume   86.64
_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  0.93  0.17  1.0
  Se  Se1  1  0.0  0.0  0.0  1.0
  Se  Se2  1  0.0  0.93  0.82  1.0
  Se  Se3  1  0.0  0.94  0.53  1.0

Ag Se Se Se