The crystal structure described by K2SbF5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to one F(1), one F(3), one F(4), one F(5), and two equivalent F(2) atoms to form distorted KF6 pentagonal pyramids that share corners with six equivalent Sb(1)F5 square pyramids and  an edgeedge with one K(1)F6 pentagonal pyramid. In the second K site, K(2) is bonded in a 9-coordinate geometry to one F(2), two equivalent F(1), two equivalent F(3), two equivalent F(4), and two equivalent F(5) atoms. 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 six equivalent K(1)F6 pentagonal pyramids. There are five inequivalent F sites. In the first F site, F(1) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one Sb(1) atom. In the second F site, F(2) is bonded in a distorted see-saw-like geometry to one K(2), two equivalent K(1), and one Sb(1) atom. In the third F site, F(3) is bonded to one K(1), two equivalent K(2), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing FK3Sb tetrahedra. In the fourth F site, F(4) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one Sb(1) atom. In the fifth F site, F(5) is bonded to one K(1), two equivalent K(2), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing FK3Sb tetrahedra. is represented by the CIF card [CIF]
data_K2SbF5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.478
_cell_length_b   7.488
_cell_length_c   12.548
_cell_angle_alpha   64.318
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   548.570
_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
  K  K0  1  0.746  0.150  0.456  1.0
  K  K1  1  0.246  0.850  0.044  1.0
  K  K2  1  0.254  0.850  0.544  1.0
  K  K3  1  0.754  0.150  0.956  1.0
  K  K4  1  0.264  0.496  0.380  1.0
  K  K5  1  0.764  0.504  0.120  1.0
  K  K6  1  0.736  0.504  0.620  1.0
  K  K7  1  0.236  0.496  0.880  1.0
  Sb  Sb8  1  0.229  0.176  0.704  1.0
  Sb  Sb9  1  0.729  0.824  0.796  1.0
  Sb  Sb10  1  0.771  0.824  0.296  1.0
  Sb  Sb11  1  0.271  0.176  0.204  1.0
  F  F12  1  0.300  0.458  0.610  1.0
  F  F13  1  0.800  0.542  0.890  1.0
  F  F14  1  0.700  0.542  0.390  1.0
  F  F15  1  0.200  0.458  0.110  1.0
  F  F16  1  0.422  0.167  0.570  1.0
  F  F17  1  0.922  0.833  0.930  1.0
  F  F18  1  0.578  0.833  0.430  1.0
  F  F19  1  0.078  0.167  0.070  1.0
  F  F20  1  0.007  0.256  0.574  1.0
  F  F21  1  0.507  0.744  0.926  1.0
  F  F22  1  0.993  0.744  0.426  1.0
  F  F23  1  0.493  0.256  0.074  1.0
  F  F24  1  0.454  0.225  0.810  1.0
  F  F25  1  0.954  0.775  0.690  1.0
  F  F26  1  0.546  0.775  0.190  1.0
  F  F27  1  0.046  0.225  0.310  1.0
  F  F28  1  0.025  0.298  0.780  1.0
  F  F29  1  0.525  0.702  0.720  1.0
  F  F30  1  0.975  0.702  0.220  1.0
  F  F31  1  0.475  0.298  0.280  1.0
[/CIF]
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The crystal structure described by K2SbF5 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to one F(1), one F(3), one F(4), one F(5), and two equivalent F(2) atoms to form distorted KF6 pentagonal pyramids that share corners with six equivalent Sb(1)F5 square pyramids and  an edgeedge with one K(1)F6 pentagonal pyramid. In the second K site, K(2) is bonded in a 9-coordinate geometry to one F(2), two equivalent F(1), two equivalent F(3), two equivalent F(4), and two equivalent F(5) atoms. 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 six equivalent K(1)F6 pentagonal pyramids. There are five inequivalent F sites. In the first F site, F(1) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one Sb(1) atom. In the second F site, F(2) is bonded in a distorted see-saw-like geometry to one K(2), two equivalent K(1), and one Sb(1) atom. In the third F site, F(3) is bonded to one K(1), two equivalent K(2), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing FK3Sb tetrahedra. In the fourth F site, F(4) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one Sb(1) atom. In the fifth F site, F(5) is bonded to one K(1), two equivalent K(2), and one Sb(1) atom to form a mixture of distorted corner and edge-sharing FK3Sb tetrahedra. is represented by the CIF card [CIF]
data_K2SbF5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.478
_cell_length_b   7.488
_cell_length_c   12.548
_cell_angle_alpha   64.318
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   548.570
_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
  K  K0  1  0.746  0.150  0.456  1.0
  K  K1  1  0.246  0.850  0.044  1.0
  K  K2  1  0.254  0.850  0.544  1.0
  K  K3  1  0.754  0.150  0.956  1.0
  K  K4  1  0.264  0.496  0.380  1.0
  K  K5  1  0.764  0.504  0.120  1.0
  K  K6  1  0.736  0.504  0.620  1.0
  K  K7  1  0.236  0.496  0.880  1.0
  Sb  Sb8  1  0.229  0.176  0.704  1.0
  Sb  Sb9  1  0.729  0.824  0.796  1.0
  Sb  Sb10  1  0.771  0.824  0.296  1.0
  Sb  Sb11  1  0.271  0.176  0.204  1.0
  F  F12  1  0.300  0.458  0.610  1.0
  F  F13  1  0.800  0.542  0.890  1.0
  F  F14  1  0.700  0.542  0.390  1.0
  F  F15  1  0.200  0.458  0.110  1.0
  F  F16  1  0.422  0.167  0.570  1.0
  F  F17  1  0.922  0.833  0.930  1.0
  F  F18  1  0.578  0.833  0.430  1.0
  F  F19  1  0.078  0.167  0.070  1.0
  F  F20  1  0.007  0.256  0.574  1.0
  F  F21  1  0.507  0.744  0.926  1.0
  F  F22  1  0.993  0.744  0.426  1.0
  F  F23  1  0.493  0.256  0.074  1.0
  F  F24  1  0.454  0.225  0.810  1.0
  F  F25  1  0.954  0.775  0.690  1.0
  F  F26  1  0.546  0.775  0.190  1.0
  F  F27  1  0.046  0.225  0.310  1.0
  F  F28  1  0.025  0.298  0.780  1.0
  F  F29  1  0.525  0.702  0.720  1.0
  F  F30  1  0.975  0.702  0.220  1.0
  F  F31  1  0.475  0.298  0.280  1.0
[/CIF]
.