data_PmNi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.79
_cell_length_b   3.45
_cell_length_c   5.04
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   PmNi
_chemical_formula_sum   'Pm2 Ni2'
_cell_volume   83.37
_cell_formula_units_Z   2
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
  Pm  Pm2  1  0.6  0.72  0.31  1.0
  Pm  Pm3  1  0.2  0.72  0.74  1.0
  Ni  Ni0  1  0.2  0.0  0.01  1.0
  Ni  Ni1  1  0.6  0.0  0.04  1.0

data_PmNi
_symmetry_space_group_name_H-M   P2
_cell_length_a   4.79
_cell_length_b   3.45
_cell_length_c   5.04
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   3
_chemical_formula_structural   PmNi
_chemical_formula_sum   'Pm2 Ni2'
_cell_volume   83.37
_cell_formula_units_Z   2
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
  Pm  Pm0  2  0.2  0.72  0.28  1.0
  Ni  Ni1  2  0.2  0.0  0.01  1.0

Pm Pm Ni Ni