data_[Ca8Ag4C4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Ag  1.9300  1.6000  1.0867
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.5158]
_cell_length_b [19.6617]
_cell_length_c [5.0787]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Ca2AgC]
_chemical_formula_sum '[Ca8 Ag4 C4]'
_cell_volume [351.0754]
_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
[
  Ca  Ca0  4  0.0000  0.2136  0.7500  1
  Ca  Ca1  4  0.0000  0.4008  0.7500  1
  Ag  Ag2  4  0.0000  0.0379  0.7500  1
  C  C3  4  0.0000  0.1886  0.2500  1
]