The material described by K2YSbO7 crystallizes in the orthorhombic Imma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to two equivalent O(1), two equivalent O(3), and four equivalent O(2) atoms to form KO8 hexagonal bipyramids that share corners with two equivalent K(1)O8 hexagonal bipyramids, corners with two equivalent Sb(1)O6 octahedra, edges with four equivalent K(2)O8 hexagonal bipyramids, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the second K site, K(2) is bonded to four equivalent O(1) and four equivalent O(2) atoms to form distorted KO8 hexagonal bipyramids that share edges with two equivalent K(2)O8 hexagonal bipyramids, edges with four equivalent K(1)O8 hexagonal bipyramids, edges with two equivalent Y(1)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. Y(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form YO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with four equivalent Sb(1)O6 octahedra, edges with two equivalent K(2)O8 hexagonal bipyramids, and edges with four equivalent K(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 35-51°. Sb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SbO6 octahedra that share corners with two equivalent K(1)O8 hexagonal bipyramids, corners with four equivalent Y(1)O6 octahedra, edges with two equivalent K(1)O8 hexagonal bipyramids, and edges with four equivalent K(2)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 35°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one K(1), two equivalent K(2), and one Sb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Y(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Y(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2YSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.161
_cell_length_b   8.161
_cell_length_c   8.161
_cell_angle_alpha   120.399
_cell_angle_beta   117.816
_cell_angle_gamma   91.566
_symmetry_Int_Tables_number   1
_cell_volume   389.144
_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
  K  K0  1  0.000  0.000  0.000  1.0
  K  K1  1  0.500  0.500  0.000  1.0
  K  K2  1  0.500  0.000  0.000  1.0
  K  K3  1  0.500  0.500  0.500  1.0
  Y  Y4  1  0.000  0.000  0.500  1.0
  Y  Y5  1  0.000  0.500  0.000  1.0
  Sb  Sb6  1  0.500  0.000  0.500  1.0
  Sb  Sb7  1  0.000  0.500  0.500  1.0
  O  O8  1  0.379  0.084  0.295  1.0
  O  O9  1  0.711  0.416  0.295  1.0
  O  O10  1  0.680  0.287  0.744  1.0
  O  O11  1  0.957  0.213  0.392  1.0
  O  O12  1  0.957  0.565  0.744  1.0
  O  O13  1  0.680  0.935  0.392  1.0
  O  O14  1  0.320  0.065  0.608  1.0
  O  O15  1  0.043  0.435  0.256  1.0
  O  O16  1  0.043  0.787  0.608  1.0
  O  O17  1  0.320  0.713  0.256  1.0
  O  O18  1  0.886  0.750  0.136  1.0
  O  O19  1  0.621  0.916  0.705  1.0
  O  O20  1  0.289  0.584  0.705  1.0
  O  O21  1  0.114  0.250  0.864  1.0
[/CIF]
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The material described by K2YSbO7 crystallizes in the orthorhombic Imma space group. There are two inequivalent K sites. In the first K site, K(1) is bonded to two equivalent O(1), two equivalent O(3), and four equivalent O(2) atoms to form KO8 hexagonal bipyramids that share corners with two equivalent K(1)O8 hexagonal bipyramids, corners with two equivalent Sb(1)O6 octahedra, edges with four equivalent K(2)O8 hexagonal bipyramids, edges with two equivalent Sb(1)O6 octahedra, and edges with four equivalent Y(1)O6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the second K site, K(2) is bonded to four equivalent O(1) and four equivalent O(2) atoms to form distorted KO8 hexagonal bipyramids that share edges with two equivalent K(2)O8 hexagonal bipyramids, edges with four equivalent K(1)O8 hexagonal bipyramids, edges with two equivalent Y(1)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. Y(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form YO6 octahedra that share corners with two equivalent Y(1)O6 octahedra, corners with four equivalent Sb(1)O6 octahedra, edges with two equivalent K(2)O8 hexagonal bipyramids, and edges with four equivalent K(1)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles range from 35-51°. Sb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form SbO6 octahedra that share corners with two equivalent K(1)O8 hexagonal bipyramids, corners with four equivalent Y(1)O6 octahedra, edges with two equivalent K(1)O8 hexagonal bipyramids, and edges with four equivalent K(2)O8 hexagonal bipyramids. The corner-sharing octahedral tilt angles are 35°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one K(1), two equivalent K(2), and one Sb(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Y(1), and one Sb(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent K(1) and two equivalent Y(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2YSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.161
_cell_length_b   8.161
_cell_length_c   8.161
_cell_angle_alpha   120.399
_cell_angle_beta   117.816
_cell_angle_gamma   91.566
_symmetry_Int_Tables_number   1
_cell_volume   389.144
_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
  K  K0  1  0.000  0.000  0.000  1.0
  K  K1  1  0.500  0.500  0.000  1.0
  K  K2  1  0.500  0.000  0.000  1.0
  K  K3  1  0.500  0.500  0.500  1.0
  Y  Y4  1  0.000  0.000  0.500  1.0
  Y  Y5  1  0.000  0.500  0.000  1.0
  Sb  Sb6  1  0.500  0.000  0.500  1.0
  Sb  Sb7  1  0.000  0.500  0.500  1.0
  O  O8  1  0.379  0.084  0.295  1.0
  O  O9  1  0.711  0.416  0.295  1.0
  O  O10  1  0.680  0.287  0.744  1.0
  O  O11  1  0.957  0.213  0.392  1.0
  O  O12  1  0.957  0.565  0.744  1.0
  O  O13  1  0.680  0.935  0.392  1.0
  O  O14  1  0.320  0.065  0.608  1.0
  O  O15  1  0.043  0.435  0.256  1.0
  O  O16  1  0.043  0.787  0.608  1.0
  O  O17  1  0.320  0.713  0.256  1.0
  O  O18  1  0.886  0.750  0.136  1.0
  O  O19  1  0.621  0.916  0.705  1.0
  O  O20  1  0.289  0.584  0.705  1.0
  O  O21  1  0.114  0.250  0.864  1.0
[/CIF]
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