The crystal structure described by K2LuSbO7 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 Lu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. 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 Lu(1)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. Lu(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form LuO6 octahedra that share corners with two equivalent Lu(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 34-49°. 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 Lu(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 34°. 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 Lu(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 Lu(1) atoms. is represented by the CIF card [CIF]
data_K2LuSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.067
_cell_length_b   8.067
_cell_length_c   8.067
_cell_angle_alpha   121.045
_cell_angle_beta   118.312
_cell_angle_gamma   90.574
_symmetry_Int_Tables_number   1
_cell_volume   372.685
_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  0.500  0.500  0.000  1.0
  K  K1  1  0.000  0.000  0.000  1.0
  K  K2  1  0.000  0.500  0.000  1.0
  K  K3  1  0.000  0.000  0.500  1.0
  Lu  Lu4  1  0.500  0.500  0.500  1.0
  Lu  Lu5  1  0.500  0.000  0.000  1.0
  Sb  Sb6  1  0.000  0.500  0.500  1.0
  Sb  Sb7  1  0.500  0.000  0.500  1.0
  O  O8  1  0.880  0.586  0.293  1.0
  O  O9  1  0.207  0.914  0.293  1.0
  O  O10  1  0.186  0.792  0.751  1.0
  O  O11  1  0.460  0.708  0.394  1.0
  O  O12  1  0.460  0.065  0.751  1.0
  O  O13  1  0.186  0.435  0.394  1.0
  O  O14  1  0.814  0.565  0.606  1.0
  O  O15  1  0.540  0.935  0.249  1.0
  O  O16  1  0.540  0.292  0.606  1.0
  O  O17  1  0.814  0.208  0.249  1.0
  O  O18  1  0.392  0.250  0.142  1.0
  O  O19  1  0.120  0.414  0.707  1.0
  O  O20  1  0.793  0.086  0.707  1.0
  O  O21  1  0.608  0.750  0.858  1.0
[/CIF]
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The crystal structure described by K2LuSbO7 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 Lu(1)O6 octahedra. The corner-sharing octahedral tilt angles are 52°. 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 Lu(1)O6 octahedra, and edges with four equivalent Sb(1)O6 octahedra. Lu(1) is bonded to two equivalent O(3) and four equivalent O(2) atoms to form LuO6 octahedra that share corners with two equivalent Lu(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 34-49°. 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 Lu(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 34°. 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 Lu(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 Lu(1) atoms. is represented by the CIF card [CIF]
data_K2LuSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.067
_cell_length_b   8.067
_cell_length_c   8.067
_cell_angle_alpha   121.045
_cell_angle_beta   118.312
_cell_angle_gamma   90.574
_symmetry_Int_Tables_number   1
_cell_volume   372.685
_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  0.500  0.500  0.000  1.0
  K  K1  1  0.000  0.000  0.000  1.0
  K  K2  1  0.000  0.500  0.000  1.0
  K  K3  1  0.000  0.000  0.500  1.0
  Lu  Lu4  1  0.500  0.500  0.500  1.0
  Lu  Lu5  1  0.500  0.000  0.000  1.0
  Sb  Sb6  1  0.000  0.500  0.500  1.0
  Sb  Sb7  1  0.500  0.000  0.500  1.0
  O  O8  1  0.880  0.586  0.293  1.0
  O  O9  1  0.207  0.914  0.293  1.0
  O  O10  1  0.186  0.792  0.751  1.0
  O  O11  1  0.460  0.708  0.394  1.0
  O  O12  1  0.460  0.065  0.751  1.0
  O  O13  1  0.186  0.435  0.394  1.0
  O  O14  1  0.814  0.565  0.606  1.0
  O  O15  1  0.540  0.935  0.249  1.0
  O  O16  1  0.540  0.292  0.606  1.0
  O  O17  1  0.814  0.208  0.249  1.0
  O  O18  1  0.392  0.250  0.142  1.0
  O  O19  1  0.120  0.414  0.707  1.0
  O  O20  1  0.793  0.086  0.707  1.0
  O  O21  1  0.608  0.750  0.858  1.0
[/CIF]
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