data_[Sr8Ag4C4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ag  1.9300  1.6000  1.0867
  C  2.5500  0.7000  0.3000
]
_symmetry_space_group_name_H-M [I-42d]
_cell_length_a [7.6648]
_cell_length_b [7.6648]
_cell_length_c [8.3860]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [122]
_chemical_formula_structural [Sr2AgC]
_chemical_formula_sum '[Sr8 Ag4 C4]'
_cell_volume [492.6679]
_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
[
  Sr  Sr0  8  0.1753  0.2500  0.6250  1
  Ag  Ag1  4  0.0000  0.0000  0.0000  1
  C  C2  4  0.0000  0.0000  0.5000  1
]