data_[Rb4C4N4O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  C  2.5500  0.7000  0.3000
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [7.5322]
_cell_length_b [6.3857]
_cell_length_c [6.4116]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [RbCNO]
_chemical_formula_sum '[Rb4 C4 N4 O4]'
_cell_volume [308.3892]
_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
[
  Rb  Rb0  4  0.0000  0.0000  0.2480  1.0
  C  C1  4  0.2500  0.5023  0.2514  1.0
  N  N2  4  0.2500  0.6336  0.3847  1.0
  O  O3  4  0.2500  0.1347  0.6159  1.0
]