data_[Na4Al4H8C4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Al  1.6100  1.2500  0.6750
  H  2.2000  0.2500  0.0000
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [5.6411]
_cell_length_b [10.5160]
_cell_length_c [6.7833]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [NaAlH2CO5]
_chemical_formula_sum '[Na4 Al4 H8 C4 O20]'
_cell_volume [402.3986]
_cell_formula_units_Z [4]
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  4  0.2500  0.2459  0.2474  1.0
  Al  Al1  4  0.0000  0.0000  0.9904  1.0
  H  H2  4  0.2500  0.5335  0.1902  1.0
  H  H3  4  0.2500  0.5345  0.7898  1.0
  C  C4  4  0.2500  0.7465  0.4905  1.0
  O  O5  8  0.0481  0.6840  0.4916  1.0
  O  O6  4  0.2500  0.0236  0.1736  1.0
  O  O7  4  0.2500  0.0236  0.8069  1.0
  O  O8  4  0.2500  0.6326  0.9881  1.0
]