data_[Er1Ag1C2O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Ag  1.9300  1.6000  1.0867
  C  2.5500  0.7000  0.3000
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [5.1804]
_cell_length_b [5.1804]
_cell_length_c [6.6885]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [ErAg(CO4)2]
_chemical_formula_sum '[Er1 Ag1 C2 O8]'
_cell_volume [155.4490]
_cell_formula_units_Z [1]
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  1  0.0000  0.0000  0.0000  1
  Ag  Ag1  1  0.0000  0.0000  0.5000  1
  C  C2  2  0.3333  0.6667  0.7227  1
  O  O3  6  0.1879  0.3758  0.7869  1
  O  O4  2  0.3333  0.6667  0.5170  1
]