data_[K2Cu2N4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Cu  1.9000  1.3500  0.8200
  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 [11.6890]
_cell_length_b [4.3671]
_cell_length_c [7.0397]
_cell_angle_alpha [90.0000]
_cell_angle_beta [113.4441]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KCu(NO4)2]
_chemical_formula_sum '[K2 Cu2 N4 O16]'
_cell_volume [329.6939]
_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  2  0.0000  0.5000  0.5000  1
  Cu  Cu1  2  0.0000  0.0000  0.0000  1
  N  N2  4  0.1964  0.5000  0.1576  1
  O  O3  8  0.0929  0.2428  0.2166  1
  O  O4  4  0.1722  0.5000  0.9734  1
  O  O5  4  0.2043  0.0000  0.6939  1
]