data_[Mg2H8Cl4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  H  2.2000  0.2500  0.0000
  Cl  3.1600  1.0000  0.7800
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.8529]
_cell_length_b [5.2613]
_cell_length_c [5.5022]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.0777]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [MgH4(ClO5)2]
_chemical_formula_sum '[Mg2 H8 Cl4 O20]'
_cell_volume [411.0105]
_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  2  0.0000  0.0000  0.5000  1.0
  H  H1  8  0.1405  0.1498  0.3089  1.0
  Cl  Cl2  4  0.1164  0.5000  0.8529  1.0
  O  O3  8  0.0555  0.2745  0.7831  1.0
  O  O4  4  0.1185  0.0000  0.3801  1.0
  O  O5  4  0.1569  0.5000  0.1277  1.0
  O  O6  4  0.1874  0.5000  0.7232  1.0
]