data_[Rb4Zn2C4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Rb  0.8200  2.3500  1.6600
  Zn  1.6500  1.3500  0.8800
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.0018]
_cell_length_b [5.0313]
_cell_length_c [6.7991]
_cell_angle_alpha [90.0000]
_cell_angle_beta [118.2723]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Rb2Zn(CO3)2]
_chemical_formula_sum '[Rb4 Zn2 C4 O12]'
_cell_volume [361.5862]
_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
[
  Rb  Rb0  4  0.1901  0.5000  0.1875  1
  Zn  Zn1  2  0.0000  0.5000  0.5000  1
  C  C2  4  0.0054  0.0000  0.2877  1
  O  O3  8  0.0592  0.2234  0.7443  1
  O  O4  4  0.1219  0.0000  0.3408  1
]