The compound described by Rb2KGaF6 crystallizes in the tetragonal I4/m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to four equivalent F(4), four equivalent F(5), and four equivalent F(7) atoms to form RbF12 cuboctahedra that share faces with two equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Ga(2)F6 octahedra, and faces with four equivalent K(2)F7 pentagonal bipyramids. In the second Rb site, Rb(2) is bonded in a 11-coordinate geometry to one F(1), one F(2), one F(4), one F(5), two equivalent F(3), two equivalent F(6), and three equivalent F(7) atoms. There are two inequivalent K sites. In the first K site, K(1) is bonded to two equivalent F(2) and four equivalent F(3) atoms to form KF6 octahedra that share corners with two equivalent Ga(1)F6 octahedra and corners with four equivalent Ga(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second K site, K(2) is bonded to one F(4), one F(5), one F(6), two equivalent F(1), and two equivalent F(7) atoms to form distorted KF7 pentagonal bipyramids that share corners with five equivalent Ga(2)F6 octahedra, corners with two equivalent K(2)F7 pentagonal bipyramids,  an edgeedge with one Ga(1)F6 octahedra, and faces with two equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-15°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent F(2) and four equivalent F(1) atoms to form GaF6 octahedra that share corners with two equivalent K(1)F6 octahedra and edges with four equivalent K(2)F7 pentagonal bipyramids. The corner-sharing octahedra are not tilted. In the second Ga site, Ga(2) is bonded to one F(3), one F(4), one F(5), one F(6), and two equivalent F(7) atoms to form GaF6 octahedra that share  a cornercorner with one K(1)F6 octahedra, corners with five equivalent K(2)F7 pentagonal bipyramids, and faces with two equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a 5-coordinate geometry to two equivalent Rb(2), two equivalent K(2), and one Ga(1) atom. In the second F site, F(2) is bonded in a distorted linear geometry to four equivalent Rb(2), one K(1), and one Ga(1) atom. In the third F site, F(3) is bonded in a 2-coordinate geometry to four equivalent Rb(2), one K(1), and one Ga(2) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), one K(2), and one Ga(2) atom. In the fifth F site, F(5) is bonded in a 2-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one K(2), and one Ga(2) atom. In the sixth F site, F(7) is bonded in a 6-coordinate geometry to one Rb(1), three equivalent Rb(2), one K(2), and one Ga(2) atom. In the seventh F site, F(6) is bonded in a 6-coordinate geometry to four equivalent Rb(2), one K(2), and one Ga(2) atom. is represented by the CIF card [CIF]
data_KRb2GaF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.833
_cell_length_b   10.607
_cell_length_c   10.607
_cell_angle_alpha   80.018
_cell_angle_beta   65.396
_cell_angle_gamma   65.396
_symmetry_Int_Tables_number   1
_cell_volume   821.510
_cell_formula_units_Z   5
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
  K  K0  1  0.500  0.000  0.000  1.0
  K  K1  1  0.263  0.824  0.649  1.0
  K  K2  1  0.088  0.649  0.176  1.0
  K  K3  1  0.737  0.176  0.351  1.0
  K  K4  1  0.912  0.351  0.824  1.0
  Rb  Rb5  1  0.750  0.500  0.500  1.0
  Rb  Rb6  1  0.250  0.500  0.500  1.0
  Rb  Rb7  1  0.619  0.894  0.319  1.0
  Rb  Rb8  1  0.513  0.319  0.106  1.0
  Rb  Rb9  1  0.832  0.106  0.681  1.0
  Rb  Rb10  1  0.938  0.681  0.894  1.0
  Rb  Rb11  1  0.381  0.106  0.681  1.0
  Rb  Rb12  1  0.487  0.681  0.894  1.0
  Rb  Rb13  1  0.168  0.894  0.319  1.0
  Rb  Rb14  1  0.062  0.319  0.106  1.0
  Ga  Ga15  1  0.000  0.000  0.000  1.0
  Ga  Ga16  1  0.805  0.790  0.601  1.0
  Ga  Ga17  1  0.595  0.601  0.210  1.0
  Ga  Ga18  1  0.195  0.210  0.399  1.0
  Ga  Ga19  1  0.405  0.399  0.790  1.0
  F  F20  1  0.937  0.937  0.188  1.0
  F  F21  1  0.875  0.188  0.063  1.0
  F  F22  1  0.063  0.063  0.812  1.0
  F  F23  1  0.125  0.812  0.937  1.0
  F  F24  1  0.785  0.000  0.000  1.0
  F  F25  1  0.215  0.000  0.000  1.0
  F  F26  1  0.673  0.878  0.776  1.0
  F  F27  1  0.551  0.776  0.122  1.0
  F  F28  1  0.327  0.122  0.224  1.0
  F  F29  1  0.449  0.224  0.878  1.0
  F  F30  1  0.847  0.614  0.692  1.0
  F  F31  1  0.461  0.692  0.386  1.0
  F  F32  1  0.153  0.386  0.308  1.0
  F  F33  1  0.539  0.308  0.614  1.0
  F  F34  1  0.935  0.703  0.427  1.0
  F  F35  1  0.638  0.427  0.297  1.0
  F  F36  1  0.065  0.297  0.573  1.0
  F  F37  1  0.362  0.573  0.703  1.0
  F  F38  1  0.759  0.969  0.514  1.0
  F  F39  1  0.727  0.514  0.031  1.0
  F  F40  1  0.241  0.031  0.486  1.0
  F  F41  1  0.273  0.486  0.969  1.0
  F  F42  1  0.584  0.795  0.603  1.0
  F  F43  1  0.379  0.603  0.205  1.0
  F  F44  1  0.982  0.205  0.397  1.0
  F  F45  1  0.187  0.397  0.795  1.0
  F  F46  1  0.416  0.205  0.397  1.0
  F  F47  1  0.621  0.397  0.795  1.0
  F  F48  1  0.018  0.795  0.603  1.0
  F  F49  1  0.813  0.603  0.205  1.0
[/CIF]
.
The compound described by Rb2KGaF6 crystallizes in the tetragonal I4/m space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to four equivalent F(4), four equivalent F(5), and four equivalent F(7) atoms to form RbF12 cuboctahedra that share faces with two equivalent Rb(1)F12 cuboctahedra, faces with four equivalent Ga(2)F6 octahedra, and faces with four equivalent K(2)F7 pentagonal bipyramids. In the second Rb site, Rb(2) is bonded in a 11-coordinate geometry to one F(1), one F(2), one F(4), one F(5), two equivalent F(3), two equivalent F(6), and three equivalent F(7) atoms. There are two inequivalent K sites. In the first K site, K(1) is bonded to two equivalent F(2) and four equivalent F(3) atoms to form KF6 octahedra that share corners with two equivalent Ga(1)F6 octahedra and corners with four equivalent Ga(2)F6 octahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second K site, K(2) is bonded to one F(4), one F(5), one F(6), two equivalent F(1), and two equivalent F(7) atoms to form distorted KF7 pentagonal bipyramids that share corners with five equivalent Ga(2)F6 octahedra, corners with two equivalent K(2)F7 pentagonal bipyramids,  an edgeedge with one Ga(1)F6 octahedra, and faces with two equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-15°. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to two equivalent F(2) and four equivalent F(1) atoms to form GaF6 octahedra that share corners with two equivalent K(1)F6 octahedra and edges with four equivalent K(2)F7 pentagonal bipyramids. The corner-sharing octahedra are not tilted. In the second Ga site, Ga(2) is bonded to one F(3), one F(4), one F(5), one F(6), and two equivalent F(7) atoms to form GaF6 octahedra that share  a cornercorner with one K(1)F6 octahedra, corners with five equivalent K(2)F7 pentagonal bipyramids, and faces with two equivalent Rb(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles are 2°. There are seven inequivalent F sites. In the first F site, F(1) is bonded in a 5-coordinate geometry to two equivalent Rb(2), two equivalent K(2), and one Ga(1) atom. In the second F site, F(2) is bonded in a distorted linear geometry to four equivalent Rb(2), one K(1), and one Ga(1) atom. In the third F site, F(3) is bonded in a 2-coordinate geometry to four equivalent Rb(2), one K(1), and one Ga(2) atom. In the fourth F site, F(4) is bonded in a distorted single-bond geometry to two equivalent Rb(1), two equivalent Rb(2), one K(2), and one Ga(2) atom. In the fifth F site, F(5) is bonded in a 2-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one K(2), and one Ga(2) atom. In the sixth F site, F(7) is bonded in a 6-coordinate geometry to one Rb(1), three equivalent Rb(2), one K(2), and one Ga(2) atom. In the seventh F site, F(6) is bonded in a 6-coordinate geometry to four equivalent Rb(2), one K(2), and one Ga(2) atom. is represented by the CIF card [CIF]
data_KRb2GaF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.833
_cell_length_b   10.607
_cell_length_c   10.607
_cell_angle_alpha   80.018
_cell_angle_beta   65.396
_cell_angle_gamma   65.396
_symmetry_Int_Tables_number   1
_cell_volume   821.510
_cell_formula_units_Z   5
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
  K  K0  1  0.500  0.000  0.000  1.0
  K  K1  1  0.263  0.824  0.649  1.0
  K  K2  1  0.088  0.649  0.176  1.0
  K  K3  1  0.737  0.176  0.351  1.0
  K  K4  1  0.912  0.351  0.824  1.0
  Rb  Rb5  1  0.750  0.500  0.500  1.0
  Rb  Rb6  1  0.250  0.500  0.500  1.0
  Rb  Rb7  1  0.619  0.894  0.319  1.0
  Rb  Rb8  1  0.513  0.319  0.106  1.0
  Rb  Rb9  1  0.832  0.106  0.681  1.0
  Rb  Rb10  1  0.938  0.681  0.894  1.0
  Rb  Rb11  1  0.381  0.106  0.681  1.0
  Rb  Rb12  1  0.487  0.681  0.894  1.0
  Rb  Rb13  1  0.168  0.894  0.319  1.0
  Rb  Rb14  1  0.062  0.319  0.106  1.0
  Ga  Ga15  1  0.000  0.000  0.000  1.0
  Ga  Ga16  1  0.805  0.790  0.601  1.0
  Ga  Ga17  1  0.595  0.601  0.210  1.0
  Ga  Ga18  1  0.195  0.210  0.399  1.0
  Ga  Ga19  1  0.405  0.399  0.790  1.0
  F  F20  1  0.937  0.937  0.188  1.0
  F  F21  1  0.875  0.188  0.063  1.0
  F  F22  1  0.063  0.063  0.812  1.0
  F  F23  1  0.125  0.812  0.937  1.0
  F  F24  1  0.785  0.000  0.000  1.0
  F  F25  1  0.215  0.000  0.000  1.0
  F  F26  1  0.673  0.878  0.776  1.0
  F  F27  1  0.551  0.776  0.122  1.0
  F  F28  1  0.327  0.122  0.224  1.0
  F  F29  1  0.449  0.224  0.878  1.0
  F  F30  1  0.847  0.614  0.692  1.0
  F  F31  1  0.461  0.692  0.386  1.0
  F  F32  1  0.153  0.386  0.308  1.0
  F  F33  1  0.539  0.308  0.614  1.0
  F  F34  1  0.935  0.703  0.427  1.0
  F  F35  1  0.638  0.427  0.297  1.0
  F  F36  1  0.065  0.297  0.573  1.0
  F  F37  1  0.362  0.573  0.703  1.0
  F  F38  1  0.759  0.969  0.514  1.0
  F  F39  1  0.727  0.514  0.031  1.0
  F  F40  1  0.241  0.031  0.486  1.0
  F  F41  1  0.273  0.486  0.969  1.0
  F  F42  1  0.584  0.795  0.603  1.0
  F  F43  1  0.379  0.603  0.205  1.0
  F  F44  1  0.982  0.205  0.397  1.0
  F  F45  1  0.187  0.397  0.795  1.0
  F  F46  1  0.416  0.205  0.397  1.0
  F  F47  1  0.621  0.397  0.795  1.0
  F  F48  1  0.018  0.795  0.603  1.0
  F  F49  1  0.813  0.603  0.205  1.0
[/CIF]
.