data_[Sr2Ca2H4I4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ca  1.0000  1.8000  1.1400
  H  2.2000  0.2500  0.0000
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [11.8023]
_cell_length_b [4.2516]
_cell_length_c [7.3530]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.0122]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [SrCaH2(IO)2]
_chemical_formula_sum '[Sr2 Ca2 H4 I4 O4]'
_cell_volume [350.8778]
_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
[
  Sr  Sr0  2  0.2008  0.5000  0.2765  1
  Ca  Ca1  2  0.2974  0.0000  0.7083  1
  H  H2  2  0.0739  0.0000  0.4030  1
  H  H3  2  0.4284  0.5000  0.6251  1
  I  I4  2  0.1017  0.5000  0.7960  1
  I  I5  2  0.3966  0.0000  0.1705  1
  O  O6  2  0.1578  0.0000  0.4096  1
  O  O7  2  0.3434  0.5000  0.6110  1
]