data_[Sm4Sc8Si6O4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sm  1.1700  1.8500  1.2290
  Sc  1.3600  1.6000  0.8850
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4/mmm]
_cell_length_a [4.2797]
_cell_length_b [4.2797]
_cell_length_c [23.0862]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Sm2Sc4Si3O2]
_chemical_formula_sum '[Sm4 Sc8 Si6 O4]'
_cell_volume [422.8424]
_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
[
  Sm  Sm0  4  0.0000  0.0000  0.3049  1.0
  Sc  Sc1  8  0.0000  0.5000  0.0773  1.0
  Si  Si2  4  0.0000  0.0000  0.1683  1.0
  Si  Si3  2  0.0000  0.0000  0.0000  1.0
  O  O4  4  0.0000  0.0000  0.4131  1.0
]