data_SbAsSe2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.21
_cell_length_b   4.21
_cell_length_c   8.81
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   127.44
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SbAsSe2
_chemical_formula_sum   'Sb1 As1 Se2'
_cell_volume   124.0
_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
  Sb  Sb1  1  0.86  0.0  0.18  1.0
  As  As0  1  0.0  0.0  0.55  1.0
  Se  Se2  1  0.0  0.0  0.38  1.0
  Se  Se3  1  0.86  0.0  0.11  1.0

data_SbAsSe2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.73
_cell_length_b   4.21
_cell_length_c   8.81
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   116.28
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SbAsSe2
_chemical_formula_sum   'Sb1 As1 Se2'
_cell_volume   124.0
_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
  Sb  Sb0  1  0.0  0.86  0.18  1.0
  As  As1  1  0.0  0.0  0.55  1.0
  Se  Se2  1  0.0  0.0  0.38  1.0
  Se  Se3  1  0.0  0.86  0.11  1.0

Sb As Se Se