data_MgCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.56
_cell_length_b   6.56
_cell_length_c   6.56
_cell_angle_alpha   144.95
_cell_angle_beta   144.95
_cell_angle_gamma   50.41
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgCl
_chemical_formula_sum   'Mg2 Cl2'
_cell_volume   92.78
_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
  Mg  Mg2  1  0.0  0.98  0.97  1.0
  Mg  Mg3  1  0.0  0.0  0.0  1.0
  Cl  Cl0  1  0.98  0.0  0.97  1.0
  Cl  Cl1  1  0.0  0.0  0.94  1.0

data_MgCl
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.95
_cell_length_b   3.95
_cell_length_c   6.56
_cell_angle_alpha   107.52
_cell_angle_beta   107.52
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgCl
_chemical_formula_sum   'Mg2 Cl2'
_cell_volume   92.78
_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
  Mg  Mg0  1  0.0  0.0  0.0  1.0
  Mg  Mg1  1  0.01  0.98  0.01  1.0
  Cl  Cl2  1  0.03  0.0  0.01  1.0
  Cl  Cl3  1  0.06  0.0  0.06  1.0

Mg Mg Cl Cl