data_[K8C4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [5.6952]
_cell_length_b [10.1018]
_cell_length_c [6.9904]
_cell_angle_alpha [90.0000]
_cell_angle_beta [99.2121]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [K2CO3]
_chemical_formula_sum '[K8 C4 O12]'
_cell_volume [396.9807]
_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
[
  K  K0  4  0.0000  0.0000  0.0000  1.0
  K  K1  4  0.0000  0.3348  0.2500  1.0
  C  C2  4  0.0000  0.3320  0.7500  1.0
  O  O3  8  0.1775  0.6036  0.1966  1.0
  O  O4  4  0.0000  0.2028  0.7500  1.0
]