data_[Mg4Si8Sn4O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Si  1.9000  1.1000  0.5400
  Sn  1.9600  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.8047]
_cell_length_b [9.8244]
_cell_length_c [5.5121]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.7437]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [MgSi2SnO6]
_chemical_formula_sum '[Mg4 Si8 Sn4 O24]'
_cell_volume [550.7086]
_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
[
  Mg  Mg0  4  0.0000  0.2762  0.7500  1.0
  Si  Si1  8  0.2209  0.4062  0.2200  1.0
  Sn  Sn2  4  0.0000  0.1383  0.2500  1.0
  O  O3  8  0.0940  0.3045  0.1191  1.0
  O  O4  8  0.1402  0.1743  0.6734  1.0
  O  O5  8  0.2064  0.4964  0.9553  1.0
]