data_Sn2HgP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.01
_cell_length_b   8.01
_cell_length_c   8.01
_cell_angle_alpha   28.18
_cell_angle_beta   28.18
_cell_angle_gamma   28.18
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sn2HgP
_chemical_formula_sum   'Sn2 Hg1 P1'
_cell_volume   101.18
_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
  Sn  Sn2  1  0.0  0.0  0.37  1.0
  Sn  Sn3  1  0.0  0.0  0.73  1.0
  Hg  Hg0  1  0.0  0.0  0.32  1.0
  P  P1  1  0.0  0.0  0.16  1.0

data_Sn2HgP
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.75
_cell_length_b   3.9
_cell_length_c   8.01
_cell_angle_alpha   90.0
_cell_angle_beta   106.33
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sn2HgP
_chemical_formula_sum   'Sn4 Hg2 P2'
_cell_volume   202.36
_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
  Sn  Sn0  2  0.0  0.0  0.27  1.0
  Sn  Sn1  2  0.0  0.0  0.63  1.0
  Hg  Hg2  2  0.0  0.0  0.68  1.0
  P  P3  2  0.0  0.0  0.84  1.0

Sn Sn Hg P