data_Fe2PCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.69
_cell_length_b   3.62
_cell_length_c   5.56
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Fe2PCl
_chemical_formula_sum   'Fe2 P1 Cl1'
_cell_volume   54.13
_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
  Fe  Fe1  1  0.34  0.81  0.0  1.0
  Fe  Fe2  1  0.0  0.81  0.78  1.0
  P  P3  1  0.0  0.0  0.0  1.0
  Cl  Cl0  1  0.34  0.0  0.78  1.0

data_Fe2PCl
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.69
_cell_length_b   3.62
_cell_length_c   5.56
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Fe2PCl
_chemical_formula_sum   'Fe2 P1 Cl1'
_cell_volume   54.13
_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
  Fe  Fe0  1  -0.0  0.81  0.78  1.0
  Fe  Fe1  1  0.34  0.81  0.0  1.0
  P  P2  1  0.0  0.0  0.0  1.0
  Cl  Cl3  1  0.34  0.0  0.78  1.0

Fe Fe P Cl
Fe Fe P Cl 0 2 o + o 1 3 o + o 