The structure described by Rb2SiF6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent F(1) atoms to form distorted RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, and faces with four equivalent Si(1)F6 octahedra. Si(1) is bonded to six equivalent F(1) atoms to form SiF6 octahedra that share faces with eight equivalent Rb(1)F12 cuboctahedra. F(1) is bonded in a single-bond geometry to four equivalent Rb(1) and one Si(1) atom. is represented by the CIF file [CIF]
data_Rb2SiF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.907
_cell_length_b   5.907
_cell_length_c   5.907
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   145.717
_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
  Rb  Rb0  1  0.750  0.750  0.750  1.0
  Rb  Rb1  1  0.250  0.250  0.250  1.0
  Si  Si2  1  0.000  0.000  0.000  1.0
  F  F3  1  0.204  0.796  0.796  1.0
  F  F4  1  0.204  0.796  0.204  1.0
  F  F5  1  0.796  0.204  0.796  1.0
  F  F6  1  0.796  0.204  0.204  1.0
  F  F7  1  0.796  0.796  0.204  1.0
  F  F8  1  0.204  0.204  0.796  1.0
[/CIF]
.
The structure described by Rb2SiF6 crystallizes in the cubic Fm-3m space group. Rb(1) is bonded to twelve equivalent F(1) atoms to form distorted RbF12 cuboctahedra that share corners with twelve equivalent Rb(1)F12 cuboctahedra, faces with six equivalent Rb(1)F12 cuboctahedra, and faces with four equivalent Si(1)F6 octahedra. Si(1) is bonded to six equivalent F(1) atoms to form SiF6 octahedra that share faces with eight equivalent Rb(1)F12 cuboctahedra. F(1) is bonded in a single-bond geometry to four equivalent Rb(1) and one Si(1) atom. is represented by the CIF file [CIF]
data_Rb2SiF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.907
_cell_length_b   5.907
_cell_length_c   5.907
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   145.717
_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
  Rb  Rb0  1  0.750  0.750  0.750  1.0
  Rb  Rb1  1  0.250  0.250  0.250  1.0
  Si  Si2  1  0.000  0.000  0.000  1.0
  F  F3  1  0.204  0.796  0.796  1.0
  F  F4  1  0.204  0.796  0.204  1.0
  F  F5  1  0.796  0.204  0.796  1.0
  F  F6  1  0.796  0.204  0.204  1.0
  F  F7  1  0.796  0.796  0.204  1.0
  F  F8  1  0.204  0.204  0.796  1.0
[/CIF]
.