The structure described by K4GeO4 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. In the third K site, K(3) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted KO5 trigonal bipyramids that share corners with three equivalent Ge(1)O4 tetrahedra,  an edgeedge with one Ge(1)O4 tetrahedra, and edges with two equivalent K(3)O5 trigonal bipyramids. In the fourth K site, K(4) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with three equivalent K(3)O5 trigonal bipyramids and  an edgeedge with one K(3)O5 trigonal bipyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(2), two equivalent K(1), two equivalent K(4), and one Ge(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(3), two equivalent K(4), and one Ge(1) atom. In the third O site, O(3) is bonded to one K(1), two equivalent K(2), two equivalent K(3), and one Ge(1) atom to form distorted edge-sharing OK5Ge octahedra. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one K(1), two equivalent K(2), two equivalent K(3), and one Ge(1) atom. is represented by the CIF card [CIF]
data_K4GeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.335
_cell_length_b   6.440
_cell_length_c   9.276
_cell_angle_alpha   72.430
_cell_angle_beta   80.349
_cell_angle_gamma   66.483
_symmetry_Int_Tables_number   1
_cell_volume   330.355
_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  0.749  0.918  0.349  1.0
  K  K1  1  0.251  0.082  0.651  1.0
  K  K2  1  0.281  0.538  0.873  1.0
  K  K3  1  0.719  0.462  0.127  1.0
  K  K4  1  0.781  0.002  0.943  1.0
  K  K5  1  0.219  0.998  0.057  1.0
  K  K6  1  0.251  0.729  0.462  1.0
  K  K7  1  0.749  0.271  0.538  1.0
  Ge  Ge8  1  0.239  0.343  0.251  1.0
  Ge  Ge9  1  0.761  0.657  0.749  1.0
  O  O10  1  0.395  0.330  0.398  1.0
  O  O11  1  0.605  0.670  0.602  1.0
  O  O12  1  0.938  0.827  0.683  1.0
  O  O13  1  0.062  0.173  0.317  1.0
  O  O14  1  0.544  0.791  0.878  1.0
  O  O15  1  0.456  0.209  0.122  1.0
  O  O16  1  0.934  0.362  0.839  1.0
  O  O17  1  0.066  0.638  0.161  1.0
[/CIF]
.
The structure described by K4GeO4 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(4), and two equivalent O(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. In the third K site, K(3) is bonded to one O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted KO5 trigonal bipyramids that share corners with three equivalent Ge(1)O4 tetrahedra,  an edgeedge with one Ge(1)O4 tetrahedra, and edges with two equivalent K(3)O5 trigonal bipyramids. In the fourth K site, K(4) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GeO4 tetrahedra that share corners with three equivalent K(3)O5 trigonal bipyramids and  an edgeedge with one K(3)O5 trigonal bipyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one K(2), two equivalent K(1), two equivalent K(4), and one Ge(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(3), two equivalent K(4), and one Ge(1) atom. In the third O site, O(3) is bonded to one K(1), two equivalent K(2), two equivalent K(3), and one Ge(1) atom to form distorted edge-sharing OK5Ge octahedra. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one K(1), two equivalent K(2), two equivalent K(3), and one Ge(1) atom. is represented by the CIF card [CIF]
data_K4GeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.335
_cell_length_b   6.440
_cell_length_c   9.276
_cell_angle_alpha   72.430
_cell_angle_beta   80.349
_cell_angle_gamma   66.483
_symmetry_Int_Tables_number   1
_cell_volume   330.355
_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  0.749  0.918  0.349  1.0
  K  K1  1  0.251  0.082  0.651  1.0
  K  K2  1  0.281  0.538  0.873  1.0
  K  K3  1  0.719  0.462  0.127  1.0
  K  K4  1  0.781  0.002  0.943  1.0
  K  K5  1  0.219  0.998  0.057  1.0
  K  K6  1  0.251  0.729  0.462  1.0
  K  K7  1  0.749  0.271  0.538  1.0
  Ge  Ge8  1  0.239  0.343  0.251  1.0
  Ge  Ge9  1  0.761  0.657  0.749  1.0
  O  O10  1  0.395  0.330  0.398  1.0
  O  O11  1  0.605  0.670  0.602  1.0
  O  O12  1  0.938  0.827  0.683  1.0
  O  O13  1  0.062  0.173  0.317  1.0
  O  O14  1  0.544  0.791  0.878  1.0
  O  O15  1  0.456  0.209  0.122  1.0
  O  O16  1  0.934  0.362  0.839  1.0
  O  O17  1  0.066  0.638  0.161  1.0
[/CIF]
.