data_[K4Ni2N4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ni  1.9100  1.3500  0.7400
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.1379]
_cell_length_b [4.9113]
_cell_length_c [5.6498]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.7612]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Ni(NO3)2]
_chemical_formula_sum '[K4 Ni2 N4 O12]'
_cell_volume [290.8520]
_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
[
  K  K0  4  0.2115  0.5000  0.1941  1
  Ni  Ni1  2  0.0000  0.5000  0.5000  1
  N  N2  4  0.0131  0.0000  0.2001  1
  O  O3  8  0.0511  0.2314  0.7833  1
  O  O4  4  0.1356  0.0000  0.3155  1
]