data_[Er8C4O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [6.3827]
_cell_length_b [5.9172]
_cell_length_c [16.0550]
_cell_angle_alpha [90.0000]
_cell_angle_beta [95.4644]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Er2CO7]
_chemical_formula_sum '[Er8 C4 O28]'
_cell_volume [603.6088]
_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
[
  Er  Er0  4  0.0747  0.7331  0.0759  1
  Er  Er1  4  0.1029  0.7326  0.3234  1
  C  C2  4  0.4265  0.0770  0.8819  1
  O  O3  4  0.0764  0.1223  0.0520  1
  O  O4  4  0.1075  0.5425  0.1998  1
  O  O5  4  0.1346  0.5909  0.9511  1
  O  O6  4  0.1473  0.5166  0.7212  1
  O  O7  4  0.2312  0.1462  0.8785  1
  O  O8  4  0.4245  0.7112  0.5950  1
  O  O9  4  0.4529  0.6292  0.3601  1
]