data_GaAs2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.29
_cell_length_b   5.29
_cell_length_c   3.0
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   108.31
_symmetry_Int_Tables_number   1
_chemical_formula_structural   GaAs2Se
_chemical_formula_sum   'Ga1 As2 Se1'
_cell_volume   79.68
_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  Ga2  1  0.0  0.0  0.0  1.0
  As  As0  1  0.55  0.86  0.5  1.0
  As  As1  1  0.55  0.14  0.5  1.0
  Se  Se3  1  0.1  0.0  0.0  1.0

data_GaAs2Se
_symmetry_space_group_name_H-M   Pm
_cell_length_a   5.29
_cell_length_b   3.0
_cell_length_c   5.29
_cell_angle_alpha   90.0
_cell_angle_beta   108.31
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   GaAs2Se
_chemical_formula_sum   'Ga1 As2 Se1'
_cell_volume   79.68
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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  Ga0  1  0.0  0.0  0.0  1.0
  As  As1  1  0.55  0.5  0.14  1.0
  As  As2  1  0.55  0.5  0.86  1.0
  Se  Se3  1  0.1  0.0  0.0  1.0

Ga As As Se