The material described by KMgNbO3 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded in a 9-coordinate geometry to two equivalent Mg(1), three equivalent O(2), and four equivalent O(1) atoms. Mg(1) is bonded in a 2-coordinate geometry to two equivalent K(1) and four equivalent O(1) atoms. Nb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent K(1), two equivalent Mg(1), and two equivalent Nb(1) atoms. In the second O site, O(2) is bonded to three equivalent K(1) and two equivalent Nb(1) atoms to form distorted corner-sharing OK3Nb2 trigonal bipyramids. is represented by the CIF file [CIF]
data_KMgNbO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.319
_cell_length_b   4.436
_cell_length_c   4.436
_cell_angle_alpha   102.263
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   83.045
_cell_formula_units_Z   1
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  0.377  0.623  1.0
  Mg  Mg1  1  0.000  0.607  0.393  1.0
  Nb  Nb2  1  0.000  0.037  0.963  1.0
  O  O3  1  0.000  0.539  0.946  1.0
  O  O4  1  0.000  0.054  0.461  1.0
  O  O5  1  0.500  0.025  0.975  1.0
[/CIF]
.
The material described by KMgNbO3 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded in a 9-coordinate geometry to two equivalent Mg(1), three equivalent O(2), and four equivalent O(1) atoms. Mg(1) is bonded in a 2-coordinate geometry to two equivalent K(1) and four equivalent O(1) atoms. Nb(1) is bonded to two equivalent O(2) and four equivalent O(1) atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 4°. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to two equivalent K(1), two equivalent Mg(1), and two equivalent Nb(1) atoms. In the second O site, O(2) is bonded to three equivalent K(1) and two equivalent Nb(1) atoms to form distorted corner-sharing OK3Nb2 trigonal bipyramids. is represented by the CIF file [CIF]
data_KMgNbO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.319
_cell_length_b   4.436
_cell_length_c   4.436
_cell_angle_alpha   102.263
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   83.045
_cell_formula_units_Z   1
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  0.377  0.623  1.0
  Mg  Mg1  1  0.000  0.607  0.393  1.0
  Nb  Nb2  1  0.000  0.037  0.963  1.0
  O  O3  1  0.000  0.539  0.946  1.0
  O  O4  1  0.000  0.054  0.461  1.0
  O  O5  1  0.500  0.025  0.975  1.0
[/CIF]
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