data_[Sr8Y4Ni8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Y  1.2200  1.8000  1.0400
  Ni  1.9100  1.3500  0.7400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [23.3651]
_cell_length_b [5.3847]
_cell_length_c [5.4082]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Sr2YNi2O7]
_chemical_formula_sum '[Sr8 Y4 Ni8 O28]'
_cell_volume [680.4344]
_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
[
  Sr  Sr0  8  0.1697  0.0344  0.0106  1
  Y  Y1  4  0.0000  0.0000  0.0168  1
  Ni  Ni2  8  0.0829  0.5080  0.0156  1
  O  O3  8  0.0576  0.7396  0.2549  1
  O  O4  8  0.0643  0.2408  0.2759  1
  O  O5  8  0.1605  0.5351  0.0151  1
  O  O6  4  0.2500  0.2398  0.2637  1
]