The material structure described by KNaGeO3 crystallizes in the orthorhombic Pna2_1 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Na(1) is bonded to one O(1), one O(3), and three equivalent O(2) atoms to form distorted NaO5 trigonal bipyramids that share corners with four equivalent Ge(1)O4 tetrahedra, corners with two equivalent Na(1)O5 trigonal bipyramids,  an edgeedge with one Ge(1)O4 tetrahedra, and edges with two equivalent Na(1)O5 trigonal bipyramids. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with four equivalent Na(1)O5 trigonal bipyramids, and  an edgeedge with one Na(1)O5 trigonal bipyramid. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent K(1), one Na(1), and two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent K(1), three equivalent Na(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to four equivalent K(1), one Na(1), and one Ge(1) atom. is represented by the CIF file [CIF]
data_KNaGeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.872
_cell_length_b   6.982
_cell_length_c   10.810
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   367.682
_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  0.520  0.885  0.735  1.0
  K  K1  1  0.520  0.385  0.765  1.0
  K  K2  1  0.020  0.615  0.235  1.0
  K  K3  1  0.020  0.115  0.265  1.0
  Na  Na4  1  0.537  0.878  0.416  1.0
  Na  Na5  1  0.037  0.622  0.916  1.0
  Na  Na6  1  0.537  0.378  0.084  1.0
  Na  Na7  1  0.037  0.122  0.584  1.0
  Ge  Ge8  1  0.501  0.369  0.451  1.0
  Ge  Ge9  1  0.001  0.631  0.549  1.0
  Ge  Ge10  1  0.001  0.131  0.951  1.0
  Ge  Ge11  1  0.501  0.869  0.049  1.0
  O  O12  1  0.130  0.916  0.030  1.0
  O  O13  1  0.558  0.163  0.540  1.0
  O  O14  1  0.568  0.862  0.206  1.0
  O  O15  1  0.630  0.584  0.530  1.0
  O  O16  1  0.130  0.416  0.470  1.0
  O  O17  1  0.068  0.638  0.706  1.0
  O  O18  1  0.630  0.084  0.970  1.0
  O  O19  1  0.058  0.337  0.040  1.0
  O  O20  1  0.558  0.663  0.960  1.0
  O  O21  1  0.568  0.362  0.294  1.0
  O  O22  1  0.058  0.837  0.460  1.0
  O  O23  1  0.068  0.138  0.794  1.0
[/CIF]
.
The material structure described by KNaGeO3 crystallizes in the orthorhombic Pna2_1 space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Na(1) is bonded to one O(1), one O(3), and three equivalent O(2) atoms to form distorted NaO5 trigonal bipyramids that share corners with four equivalent Ge(1)O4 tetrahedra, corners with two equivalent Na(1)O5 trigonal bipyramids,  an edgeedge with one Ge(1)O4 tetrahedra, and edges with two equivalent Na(1)O5 trigonal bipyramids. Ge(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form GeO4 tetrahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with four equivalent Na(1)O5 trigonal bipyramids, and  an edgeedge with one Na(1)O5 trigonal bipyramid. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent K(1), one Na(1), and two equivalent Ge(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to two equivalent K(1), three equivalent Na(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to four equivalent K(1), one Na(1), and one Ge(1) atom. is represented by the CIF file [CIF]
data_KNaGeO3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.872
_cell_length_b   6.982
_cell_length_c   10.810
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   367.682
_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  0.520  0.885  0.735  1.0
  K  K1  1  0.520  0.385  0.765  1.0
  K  K2  1  0.020  0.615  0.235  1.0
  K  K3  1  0.020  0.115  0.265  1.0
  Na  Na4  1  0.537  0.878  0.416  1.0
  Na  Na5  1  0.037  0.622  0.916  1.0
  Na  Na6  1  0.537  0.378  0.084  1.0
  Na  Na7  1  0.037  0.122  0.584  1.0
  Ge  Ge8  1  0.501  0.369  0.451  1.0
  Ge  Ge9  1  0.001  0.631  0.549  1.0
  Ge  Ge10  1  0.001  0.131  0.951  1.0
  Ge  Ge11  1  0.501  0.869  0.049  1.0
  O  O12  1  0.130  0.916  0.030  1.0
  O  O13  1  0.558  0.163  0.540  1.0
  O  O14  1  0.568  0.862  0.206  1.0
  O  O15  1  0.630  0.584  0.530  1.0
  O  O16  1  0.130  0.416  0.470  1.0
  O  O17  1  0.068  0.638  0.706  1.0
  O  O18  1  0.630  0.084  0.970  1.0
  O  O19  1  0.058  0.337  0.040  1.0
  O  O20  1  0.558  0.663  0.960  1.0
  O  O21  1  0.568  0.362  0.294  1.0
  O  O22  1  0.058  0.837  0.460  1.0
  O  O23  1  0.068  0.138  0.794  1.0
[/CIF]
.