data_[Ho2Nb2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Nb  1.6000  1.4500  0.8200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2/c]
_cell_length_a [5.1446]
_cell_length_b [5.4766]
_cell_length_c [5.3555]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.7108]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [13]
_chemical_formula_structural [HoNbO4]
_chemical_formula_sum '[Ho2 Nb2 O8]'
_cell_volume [150.1402]
_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
[
  Ho  Ho0  2  0.5000  0.2590  0.2500  1.0
  Nb  Nb1  2  0.0000  0.2047  0.7500  1.0
  O  O2  4  0.2385  0.0591  0.5190  1.0
  O  O3  4  0.2497  0.4231  0.9064  1.0
]