data_NaSnP2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.75
_cell_length_b   5.5
_cell_length_c   5.53
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSnP2
_chemical_formula_sum   'Na1 Sn1 P2'
_cell_volume   83.51
_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
  Na  Na0  1  0.0  0.0  0.75  1.0
  Sn  Sn3  1  0.37  0.75  0.4  1.0
  P  P1  1  0.37  0.75  0.64  1.0
  P  P2  1  0.37  0.0  0.51  1.0

data_NaSnP2
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.75
_cell_length_b   5.5
_cell_length_c   5.53
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaSnP2
_chemical_formula_sum   'Na1 Sn1 P2'
_cell_volume   83.51
_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
  Na  Na0  1  0.0  0.0  0.75  1.0
  Sn  Sn1  1  0.37  0.75  0.4  1.0
  P  P2  1  0.37  0.0  0.51  1.0
  P  P3  1  0.37  0.75  0.64  1.0

Na Sn P P
Na Sn P P 0 2 o - o 0 3 o o o 1 3 o + o 1 2 o o o 2 3 o + o 