data_[Ac2Ce1Si1O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ac  1.1000  1.9500  1.2600
  Ce  1.1200  1.8500  1.0800
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [5.6055]
_cell_length_b [5.6055]
_cell_length_c [6.0868]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [Ac2CeSiO8]
_chemical_formula_sum '[Ac2 Ce1 Si1 O8]'
_cell_volume [165.6321]
_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
[
  Ac  Ac0  2  0.3333  0.6667  0.8681  1
  Ce  Ce1  1  0.0000  0.0000  0.5000  1
  Si  Si2  1  0.0000  0.0000  0.0000  1
  O  O3  6  0.1477  0.2954  0.1785  1
  O  O4  2  0.3333  0.6667  0.5127  1
]