data_[Mg4Ni4Bi4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Ni  1.9100  1.3500  0.7400
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [5.3616]
_cell_length_b [10.4619]
_cell_length_c [8.3052]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.6555]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [MgNiBiO5]
_chemical_formula_sum '[Mg4 Ni4 Bi4 O20]'
_cell_volume [438.7145]
_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
[
  Mg  Mg0  4  0.4679  0.5906  0.3319  1
  Ni  Ni1  4  0.1200  0.1159  0.4395  1
  Bi  Bi2  4  0.0268  0.6048  0.6577  1
  O  O3  4  0.1551  0.0437  0.6572  1
  O  O4  4  0.1857  0.7092  0.1921  1
  O  O5  4  0.2478  0.5419  0.4937  1
  O  O6  4  0.2850  0.2198  0.0045  1
  O  O7  4  0.3018  0.0331  0.3153  1
]