data_[Mg2Ag4C4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  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 [C2/m]
_cell_length_a [8.7981]
_cell_length_b [5.1385]
_cell_length_c [6.6212]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.3554]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [MgAg2(CO3)2]
_chemical_formula_sum '[Mg2 Ag4 C4 O12]'
_cell_volume [258.2997]
_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
[
  Mg  Mg0  2  0.0000  0.5000  0.5000  1.0
  Ag  Ag1  4  0.1894  0.5000  0.1365  1.0
  C  C2  4  0.0686  0.0000  0.2828  1.0
  O  O3  8  0.0159  0.2182  0.7408  1.0
  O  O4  4  0.2255  0.0000  0.3181  1.0
]