data_ScPb2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.32
_cell_length_b   4.32
_cell_length_c   5.81
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ScPb2Se
_chemical_formula_sum   'Sc1 Pb2 Se1'
_cell_volume   108.58
_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
  Sc  Sc2  1  0.0  0.0  0.0  1.0
  Pb  Pb0  1  0.16  0.16  0.37  1.0
  Pb  Pb1  1  0.16  0.16  0.44  1.0
  Se  Se3  1  0.0  0.0  0.9  1.0

data_ScPb2Se
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.11
_cell_length_b   6.11
_cell_length_c   5.81
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   ScPb2Se
_chemical_formula_sum   'Sc2 Pb4 Se2'
_cell_volume   217.16
_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
  Sc  Sc0  2  0.0  0.0  0.0  1.0
  Pb  Pb1  2  0.16  0.0  0.37  1.0
  Pb  Pb2  2  0.16  0.0  0.44  1.0
  Se  Se3  2  0.0  0.0  0.9  1.0

Sc Pb Pb Se
Sc Pb Pb Se 0 3 o o - 1 2 o o o 