data_ZnP
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.81
_cell_length_b   4.0
_cell_length_c   5.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnP
_chemical_formula_sum   'Zn2 P2'
_cell_volume   65.76
_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
  Zn  Zn2  1  0.0  0.0  0.93  1.0
  Zn  Zn3  1  0.41  1.0  0.91  1.0
  P  P0  1  0.0  0.0  0.19  1.0
  P  P1  1  0.41  1.0  0.66  1.0

data_ZnP
_symmetry_space_group_name_H-M   P2/m
_cell_length_a   2.81
_cell_length_b   4.0
_cell_length_c   5.84
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   10
_chemical_formula_structural   ZnP
_chemical_formula_sum   'Zn2 P2'
_cell_volume   65.76
_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, y, -z'
  4  '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
  Zn  Zn0  2  0.2  0.0  0.49  1.0
  P  P1  2  0.2  0.0  0.23  1.0

Zn Zn P P
Zn Zn P P 0 1 o - o 0 2 o o + 1 3 o o o 