The structure described by KCeNbO6Sn crystallizes in the tetragonal P4_2/mmc space group. The structure consists of two 7440-31-5 atoms inside a KCeNbO6 framework. In the KCeNbO6 framework, K(1) is bonded to four equivalent O(1) and eight equivalent O(2) atoms to form KO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra, faces with two equivalent K(1)O12 cuboctahedra, faces with four equivalent Ce(1)O6 octahedra, and faces with four equivalent Nb(1)O6 octahedra. Ce(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CeO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra and faces with four equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. Nb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NbO6 octahedra that share corners with six equivalent Ce(1)O6 octahedra and faces with four equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent K(1), one Ce(1), and one Nb(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent K(1), one Ce(1), and one Nb(1) atom. is represented by the CIF file [CIF]
data_KCeNbSnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.026
_cell_length_b   6.026
_cell_length_c   8.491
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   308.356
_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  0.250  1.0
  K  K1  1  0.000  0.000  0.750  1.0
  Ce  Ce2  1  0.000  0.500  0.000  1.0
  Ce  Ce3  1  0.500  0.000  0.500  1.0
  Nb  Nb4  1  0.000  0.500  0.500  1.0
  Nb  Nb5  1  0.500  0.000  0.000  1.0
  Sn  Sn6  1  0.500  0.500  0.750  1.0
  Sn  Sn7  1  0.500  0.500  0.250  1.0
  O  O8  1  0.000  0.500  0.737  1.0
  O  O9  1  0.500  0.000  0.763  1.0
  O  O10  1  0.245  0.729  0.500  1.0
  O  O11  1  0.755  0.271  0.500  1.0
  O  O12  1  0.271  0.755  0.000  1.0
  O  O13  1  0.729  0.245  0.000  1.0
  O  O14  1  0.245  0.271  0.500  1.0
  O  O15  1  0.271  0.245  0.000  1.0
  O  O16  1  0.755  0.729  0.500  1.0
  O  O17  1  0.729  0.755  0.000  1.0
  O  O18  1  0.000  0.500  0.263  1.0
  O  O19  1  0.500  0.000  0.237  1.0
[/CIF]
.
The structure described by KCeNbO6Sn crystallizes in the tetragonal P4_2/mmc space group. The structure consists of two 7440-31-5 atoms inside a KCeNbO6 framework. In the KCeNbO6 framework, K(1) is bonded to four equivalent O(1) and eight equivalent O(2) atoms to form KO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra, faces with two equivalent K(1)O12 cuboctahedra, faces with four equivalent Ce(1)O6 octahedra, and faces with four equivalent Nb(1)O6 octahedra. Ce(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form CeO6 octahedra that share corners with six equivalent Nb(1)O6 octahedra and faces with four equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. Nb(1) is bonded to two equivalent O(1) and four equivalent O(2) atoms to form NbO6 octahedra that share corners with six equivalent Ce(1)O6 octahedra and faces with four equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-4°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to two equivalent K(1), one Ce(1), and one Nb(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent K(1), one Ce(1), and one Nb(1) atom. is represented by the CIF file [CIF]
data_KCeNbSnO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.026
_cell_length_b   6.026
_cell_length_c   8.491
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   308.356
_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  0.250  1.0
  K  K1  1  0.000  0.000  0.750  1.0
  Ce  Ce2  1  0.000  0.500  0.000  1.0
  Ce  Ce3  1  0.500  0.000  0.500  1.0
  Nb  Nb4  1  0.000  0.500  0.500  1.0
  Nb  Nb5  1  0.500  0.000  0.000  1.0
  Sn  Sn6  1  0.500  0.500  0.750  1.0
  Sn  Sn7  1  0.500  0.500  0.250  1.0
  O  O8  1  0.000  0.500  0.737  1.0
  O  O9  1  0.500  0.000  0.763  1.0
  O  O10  1  0.245  0.729  0.500  1.0
  O  O11  1  0.755  0.271  0.500  1.0
  O  O12  1  0.271  0.755  0.000  1.0
  O  O13  1  0.729  0.245  0.000  1.0
  O  O14  1  0.245  0.271  0.500  1.0
  O  O15  1  0.271  0.245  0.000  1.0
  O  O16  1  0.755  0.729  0.500  1.0
  O  O17  1  0.729  0.755  0.000  1.0
  O  O18  1  0.000  0.500  0.263  1.0
  O  O19  1  0.500  0.000  0.237  1.0
[/CIF]
.