The compound described by K2YF5 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. Y(1) is bonded to one F(2), one F(3), one F(4), and four equivalent F(1) atoms to form distorted edge-sharing YF7 pentagonal bipyramids. There are four inequivalent F sites. In the first F site, F(1) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Y(1) atoms. In the second F site, F(2) is bonded in a 5-coordinate geometry to four equivalent K(1) and one Y(1) atom. In the third F site, F(3) is bonded to four equivalent K(1) and one Y(1) atom to form a mixture of distorted corner, edge, and face-sharing FK4Y trigonal bipyramids. In the fourth F site, F(4) is bonded to four equivalent K(1) and one Y(1) atom to form a mixture of distorted corner, edge, and face-sharing FK4Y trigonal bipyramids. is represented by the CIF card [CIF]
data_K2YF5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.546
_cell_length_b   7.239
_cell_length_c   10.701
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   507.085
_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  0.965  0.503  0.671  1.0
  K  K1  1  0.035  0.003  0.329  1.0
  K  K2  1  0.535  0.503  0.171  1.0
  K  K3  1  0.465  0.003  0.829  1.0
  K  K4  1  0.965  0.997  0.671  1.0
  K  K5  1  0.035  0.497  0.329  1.0
  K  K6  1  0.535  0.997  0.171  1.0
  K  K7  1  0.465  0.497  0.829  1.0
  Y  Y8  1  0.935  0.250  0.997  1.0
  Y  Y9  1  0.065  0.750  0.003  1.0
  Y  Y10  1  0.565  0.250  0.497  1.0
  Y  Y11  1  0.435  0.750  0.503  1.0
  F  F12  1  0.851  0.535  0.924  1.0
  F  F13  1  0.149  0.035  0.076  1.0
  F  F14  1  0.649  0.535  0.424  1.0
  F  F15  1  0.351  0.035  0.576  1.0
  F  F16  1  0.851  0.965  0.924  1.0
  F  F17  1  0.149  0.465  0.076  1.0
  F  F18  1  0.649  0.965  0.424  1.0
  F  F19  1  0.351  0.465  0.576  1.0
  F  F20  1  0.631  0.750  0.668  1.0
  F  F21  1  0.369  0.250  0.332  1.0
  F  F22  1  0.869  0.750  0.168  1.0
  F  F23  1  0.131  0.250  0.832  1.0
  F  F24  1  0.101  0.750  0.512  1.0
  F  F25  1  0.899  0.250  0.488  1.0
  F  F26  1  0.399  0.750  0.012  1.0
  F  F27  1  0.601  0.250  0.988  1.0
  F  F28  1  0.163  0.750  0.806  1.0
  F  F29  1  0.837  0.250  0.194  1.0
  F  F30  1  0.337  0.750  0.306  1.0
  F  F31  1  0.663  0.250  0.694  1.0
[/CIF]
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The compound described by K2YF5 crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 8-coordinate geometry to two equivalent F(1), two equivalent F(2), two equivalent F(3), and two equivalent F(4) atoms. Y(1) is bonded to one F(2), one F(3), one F(4), and four equivalent F(1) atoms to form distorted edge-sharing YF7 pentagonal bipyramids. There are four inequivalent F sites. In the first F site, F(1) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Y(1) atoms. In the second F site, F(2) is bonded in a 5-coordinate geometry to four equivalent K(1) and one Y(1) atom. In the third F site, F(3) is bonded to four equivalent K(1) and one Y(1) atom to form a mixture of distorted corner, edge, and face-sharing FK4Y trigonal bipyramids. In the fourth F site, F(4) is bonded to four equivalent K(1) and one Y(1) atom to form a mixture of distorted corner, edge, and face-sharing FK4Y trigonal bipyramids. is represented by the CIF card [CIF]
data_K2YF5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.546
_cell_length_b   7.239
_cell_length_c   10.701
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   507.085
_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  0.965  0.503  0.671  1.0
  K  K1  1  0.035  0.003  0.329  1.0
  K  K2  1  0.535  0.503  0.171  1.0
  K  K3  1  0.465  0.003  0.829  1.0
  K  K4  1  0.965  0.997  0.671  1.0
  K  K5  1  0.035  0.497  0.329  1.0
  K  K6  1  0.535  0.997  0.171  1.0
  K  K7  1  0.465  0.497  0.829  1.0
  Y  Y8  1  0.935  0.250  0.997  1.0
  Y  Y9  1  0.065  0.750  0.003  1.0
  Y  Y10  1  0.565  0.250  0.497  1.0
  Y  Y11  1  0.435  0.750  0.503  1.0
  F  F12  1  0.851  0.535  0.924  1.0
  F  F13  1  0.149  0.035  0.076  1.0
  F  F14  1  0.649  0.535  0.424  1.0
  F  F15  1  0.351  0.035  0.576  1.0
  F  F16  1  0.851  0.965  0.924  1.0
  F  F17  1  0.149  0.465  0.076  1.0
  F  F18  1  0.649  0.965  0.424  1.0
  F  F19  1  0.351  0.465  0.576  1.0
  F  F20  1  0.631  0.750  0.668  1.0
  F  F21  1  0.369  0.250  0.332  1.0
  F  F22  1  0.869  0.750  0.168  1.0
  F  F23  1  0.131  0.250  0.832  1.0
  F  F24  1  0.101  0.750  0.512  1.0
  F  F25  1  0.899  0.250  0.488  1.0
  F  F26  1  0.399  0.750  0.012  1.0
  F  F27  1  0.601  0.250  0.988  1.0
  F  F28  1  0.163  0.750  0.806  1.0
  F  F29  1  0.837  0.250  0.194  1.0
  F  F30  1  0.337  0.750  0.306  1.0
  F  F31  1  0.663  0.250  0.694  1.0
[/CIF]
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