The crystal structure described by Rb2Na2Sb2O3F10 crystallizes in the monoclinic P2_1/m space group. Rb(1) is bonded to two equivalent F(2), two equivalent F(3), two equivalent F(4), two equivalent F(5), and four equivalent F(1) atoms to form distorted RbF12 cuboctahedra that share corners with four equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Na(1)OF5 octahedra, and faces with four equivalent Sb(1)F5 square pyramids. Na(1) is bonded to one O(1), one F(1), one F(2), one F(3), one F(4), and one F(5) atom to form distorted NaOF5 octahedra that share  a cornercorner with one Na(1)OF5 octahedra, corners with five equivalent Sb(1)F5 square pyramids, and faces with four equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles are 59°. Sb(1) is bonded to one F(1), one F(2), one F(3), one F(4), and one F(5) atom to form distorted SbF5 square pyramids that share corners with five equivalent Na(1)OF5 octahedra and faces with four equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles range from 6-27°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a tetrahedral geometry to two equivalent Na(1), one O(2), and one O(3) atom. In the second O site, O(2) is bonded in a single-bond geometry to one O(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one O(1) atom. There are five inequivalent F sites. In the first F site, F(5) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Na(1), and one Sb(1) atom. In the second F site, F(1) is bonded in a 6-coordinate geometry to four equivalent Rb(1), one Na(1), and one Sb(1) atom. In the third F site, F(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Rb(1), one Na(1), and one Sb(1) atom. In the fourth F site, F(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Rb(1), one Na(1), and one Sb(1) atom. In the fifth F site, F(4) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Rb(1), one Na(1), and one Sb(1) atom. is represented by the CIF file [CIF]
data_Rb2Na2Sb2O3F10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   18.972
_cell_length_b   6.098
_cell_length_c   6.110
_cell_angle_alpha   89.718
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   706.859
_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
  Rb  Rb0  1  0.000  0.254  0.253  1.0
  Rb  Rb1  1  0.500  0.746  0.747  1.0
  Rb  Rb2  1  1.000  0.746  0.747  1.0
  Rb  Rb3  1  0.500  0.254  0.253  1.0
  Na  Na4  1  0.879  0.254  0.746  1.0
  Na  Na5  1  0.379  0.746  0.254  1.0
  Na  Na6  1  0.121  0.746  0.254  1.0
  Na  Na7  1  0.621  0.254  0.746  1.0
  Sb  Sb8  1  0.869  0.759  0.243  1.0
  Sb  Sb9  1  0.369  0.241  0.757  1.0
  Sb  Sb10  1  0.131  0.241  0.757  1.0
  Sb  Sb11  1  0.631  0.759  0.243  1.0
  O  O12  1  0.750  0.099  0.912  1.0
  O  O13  1  0.250  0.901  0.088  1.0
  O  O14  1  0.750  0.897  0.843  1.0
  O  O15  1  0.250  0.103  0.157  1.0
  O  O16  1  0.750  0.127  0.124  1.0
  O  O17  1  0.250  0.873  0.876  1.0
  F  F18  1  0.976  0.738  0.259  1.0
  F  F19  1  0.476  0.262  0.741  1.0
  F  F20  1  0.024  0.262  0.741  1.0
  F  F21  1  0.524  0.738  0.259  1.0
  F  F22  1  0.889  0.514  0.010  1.0
  F  F23  1  0.389  0.486  0.990  1.0
  F  F24  1  0.111  0.486  0.990  1.0
  F  F25  1  0.611  0.514  0.010  1.0
  F  F26  1  0.891  0.992  0.484  1.0
  F  F27  1  0.391  0.008  0.516  1.0
  F  F28  1  0.109  0.008  0.516  1.0
  F  F29  1  0.609  0.992  0.484  1.0
  F  F30  1  0.882  0.517  0.485  1.0
  F  F31  1  0.382  0.483  0.515  1.0
  F  F32  1  0.118  0.483  0.515  1.0
  F  F33  1  0.618  0.517  0.485  1.0
  F  F34  1  0.900  0.992  0.007  1.0
  F  F35  1  0.400  0.008  0.993  1.0
  F  F36  1  0.100  0.008  0.993  1.0
  F  F37  1  0.600  0.992  0.007  1.0
[/CIF]
.
The crystal structure described by Rb2Na2Sb2O3F10 crystallizes in the monoclinic P2_1/m space group. Rb(1) is bonded to two equivalent F(2), two equivalent F(3), two equivalent F(4), two equivalent F(5), and four equivalent F(1) atoms to form distorted RbF12 cuboctahedra that share corners with four equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Na(1)OF5 octahedra, and faces with four equivalent Sb(1)F5 square pyramids. Na(1) is bonded to one O(1), one F(1), one F(2), one F(3), one F(4), and one F(5) atom to form distorted NaOF5 octahedra that share  a cornercorner with one Na(1)OF5 octahedra, corners with five equivalent Sb(1)F5 square pyramids, and faces with four equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles are 59°. Sb(1) is bonded to one F(1), one F(2), one F(3), one F(4), and one F(5) atom to form distorted SbF5 square pyramids that share corners with five equivalent Na(1)OF5 octahedra and faces with four equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles range from 6-27°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a tetrahedral geometry to two equivalent Na(1), one O(2), and one O(3) atom. In the second O site, O(2) is bonded in a single-bond geometry to one O(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one O(1) atom. There are five inequivalent F sites. In the first F site, F(5) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Na(1), and one Sb(1) atom. In the second F site, F(1) is bonded in a 6-coordinate geometry to four equivalent Rb(1), one Na(1), and one Sb(1) atom. In the third F site, F(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Rb(1), one Na(1), and one Sb(1) atom. In the fourth F site, F(3) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Rb(1), one Na(1), and one Sb(1) atom. In the fifth F site, F(4) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Rb(1), one Na(1), and one Sb(1) atom. is represented by the CIF file [CIF]
data_Rb2Na2Sb2O3F10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   18.972
_cell_length_b   6.098
_cell_length_c   6.110
_cell_angle_alpha   89.718
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   706.859
_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
  Rb  Rb0  1  0.000  0.254  0.253  1.0
  Rb  Rb1  1  0.500  0.746  0.747  1.0
  Rb  Rb2  1  1.000  0.746  0.747  1.0
  Rb  Rb3  1  0.500  0.254  0.253  1.0
  Na  Na4  1  0.879  0.254  0.746  1.0
  Na  Na5  1  0.379  0.746  0.254  1.0
  Na  Na6  1  0.121  0.746  0.254  1.0
  Na  Na7  1  0.621  0.254  0.746  1.0
  Sb  Sb8  1  0.869  0.759  0.243  1.0
  Sb  Sb9  1  0.369  0.241  0.757  1.0
  Sb  Sb10  1  0.131  0.241  0.757  1.0
  Sb  Sb11  1  0.631  0.759  0.243  1.0
  O  O12  1  0.750  0.099  0.912  1.0
  O  O13  1  0.250  0.901  0.088  1.0
  O  O14  1  0.750  0.897  0.843  1.0
  O  O15  1  0.250  0.103  0.157  1.0
  O  O16  1  0.750  0.127  0.124  1.0
  O  O17  1  0.250  0.873  0.876  1.0
  F  F18  1  0.976  0.738  0.259  1.0
  F  F19  1  0.476  0.262  0.741  1.0
  F  F20  1  0.024  0.262  0.741  1.0
  F  F21  1  0.524  0.738  0.259  1.0
  F  F22  1  0.889  0.514  0.010  1.0
  F  F23  1  0.389  0.486  0.990  1.0
  F  F24  1  0.111  0.486  0.990  1.0
  F  F25  1  0.611  0.514  0.010  1.0
  F  F26  1  0.891  0.992  0.484  1.0
  F  F27  1  0.391  0.008  0.516  1.0
  F  F28  1  0.109  0.008  0.516  1.0
  F  F29  1  0.609  0.992  0.484  1.0
  F  F30  1  0.882  0.517  0.485  1.0
  F  F31  1  0.382  0.483  0.515  1.0
  F  F32  1  0.118  0.483  0.515  1.0
  F  F33  1  0.618  0.517  0.485  1.0
  F  F34  1  0.900  0.992  0.007  1.0
  F  F35  1  0.400  0.008  0.993  1.0
  F  F36  1  0.100  0.008  0.993  1.0
  F  F37  1  0.600  0.992  0.007  1.0
[/CIF]
.