data_[Cu4C2O6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [3.0406]
_cell_length_b [9.0287]
_cell_length_c [4.5555]
_cell_angle_alpha [90.0000]
_cell_angle_beta [97.5210]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Cu2CO3]
_chemical_formula_sum '[Cu4 C2 O6]'
_cell_volume [123.9835]
_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
[
  Cu  Cu0  4  0.2164  0.5669  0.7094  1
  C  C1  2  0.2049  0.2500  0.7528  1
  O  O2  4  0.3172  0.1267  0.8837  1
  O  O3  2  0.0255  0.7500  0.5117  1
]