The crystal structure described by K4Ba(GeO3)3 crystallizes in the monoclinic C2 space group. There are six inequivalent K sites. In the first K site, K(1) is bonded to one O(10), one O(2), one O(5), one O(7), one O(8), and one O(9) atom to form distorted KO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra, and faces with two equivalent Ba(1)O6 octahedra. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. In the third K site, K(3) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(5), and two equivalent O(8) atoms. In the fourth K site, K(4) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(10), two equivalent O(3), and two equivalent O(8) atoms. In the fifth K site, K(5) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. In the sixth K site, K(6) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(9) atoms. Ba(1) is bonded to one O(10), one O(2), one O(5), one O(7), one O(8), and one O(9) atom to form distorted BaO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra, and faces with two equivalent K(1)O6 octahedra. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(2), one O(3), one O(6), and one O(8) atom to form GeO4 tetrahedra that share corners with two equivalent K(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra, and  a cornercorner with one Ge(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 4-83°. In the second Ge site, Ge(2) is bonded to one O(1), one O(10), one O(3), and one O(9) atom to form GeO4 tetrahedra that share corners with two equivalent K(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra,  a cornercorner with one Ge(1)O4 tetrahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-62°. In the third Ge site, Ge(3) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form GeO4 tetrahedra that share corners with two equivalent K(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra,  a cornercorner with one Ge(1)O4 tetrahedra, and  a cornercorner with one Ge(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 30-80°. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one K(4), two equivalent K(5), and two equivalent Ge(2) atoms to form distorted corner-sharing OK3Ge2 trigonal bipyramids. In the second O site, O(2) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(5), one K(6), one Ba(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(4), one K(6), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded to one K(3), two equivalent K(5), and two equivalent Ge(3) atoms to form distorted corner-sharing OK3Ge2 trigonal bipyramids. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(3), one K(5), one Ba(1), and one Ge(3) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one K(2), one K(5), one Ge(1), and one Ge(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Ba(1), and one Ge(3) atom. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one K(1), one K(3), one K(4), one K(5), one Ba(1), and one Ge(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one K(1), one K(5), one K(6), one Ba(1), and one Ge(2) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one K(1), one K(4), one K(5), one Ba(1), and one Ge(2) atom. is represented by the CIF file [CIF]
data_K4Ba(GeO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.568
_cell_length_b   7.568
_cell_length_c   11.566
_cell_angle_alpha   89.724
_cell_angle_beta   89.724
_cell_angle_gamma   111.614
_symmetry_Int_Tables_number   1
_cell_volume   615.804
_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  0.293  0.158  0.749  1.0
  K  K1  1  0.050  0.950  0.000  1.0
  K  K2  1  0.842  0.707  0.251  1.0
  K  K3  1  0.567  0.433  0.000  1.0
  K  K4  1  0.587  0.413  0.500  1.0
  K  K5  1  0.310  0.583  0.254  1.0
  K  K6  1  0.998  0.002  0.500  1.0
  K  K7  1  0.417  0.690  0.746  1.0
  Ba  Ba8  1  0.817  0.198  0.230  1.0
  Ba  Ba9  1  0.802  0.183  0.770  1.0
  Ge  Ge10  1  0.890  0.667  0.742  1.0
  Ge  Ge11  1  0.333  0.110  0.258  1.0
  Ge  Ge12  1  0.486  0.908  0.476  1.0
  Ge  Ge13  1  0.100  0.508  0.969  1.0
  Ge  Ge14  1  0.092  0.514  0.524  1.0
  Ge  Ge15  1  0.492  0.900  0.031  1.0
  O  O16  1  0.346  0.654  0.500  1.0
  O  O17  1  0.102  0.097  0.239  1.0
  O  O18  1  0.903  0.898  0.761  1.0
  O  O19  1  0.992  0.669  0.598  1.0
  O  O20  1  0.349  0.651  0.000  1.0
  O  O21  1  0.490  0.051  0.918  1.0
  O  O22  1  0.368  0.940  0.159  1.0
  O  O23  1  0.331  0.008  0.402  1.0
  O  O24  1  0.060  0.632  0.841  1.0
  O  O25  1  0.707  0.893  0.078  1.0
  O  O26  1  0.518  0.333  0.249  1.0
  O  O27  1  0.096  0.330  0.614  1.0
  O  O28  1  0.670  0.904  0.386  1.0
  O  O29  1  0.538  0.025  0.608  1.0
  O  O30  1  0.949  0.510  0.082  1.0
  O  O31  1  0.107  0.293  0.922  1.0
  O  O32  1  0.975  0.462  0.392  1.0
  O  O33  1  0.667  0.482  0.751  1.0
[/CIF]
.
The crystal structure described by K4Ba(GeO3)3 crystallizes in the monoclinic C2 space group. There are six inequivalent K sites. In the first K site, K(1) is bonded to one O(10), one O(2), one O(5), one O(7), one O(8), and one O(9) atom to form distorted KO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra, and faces with two equivalent Ba(1)O6 octahedra. In the second K site, K(2) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. In the third K site, K(3) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(5), and two equivalent O(8) atoms. In the fourth K site, K(4) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(10), two equivalent O(3), and two equivalent O(8) atoms. In the fifth K site, K(5) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. In the sixth K site, K(6) is bonded in a 6-coordinate geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(9) atoms. Ba(1) is bonded to one O(10), one O(2), one O(5), one O(7), one O(8), and one O(9) atom to form distorted BaO6 octahedra that share corners with two equivalent Ge(1)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with two equivalent Ge(3)O4 tetrahedra, and faces with two equivalent K(1)O6 octahedra. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(2), one O(3), one O(6), and one O(8) atom to form GeO4 tetrahedra that share corners with two equivalent K(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra, and  a cornercorner with one Ge(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 4-83°. In the second Ge site, Ge(2) is bonded to one O(1), one O(10), one O(3), and one O(9) atom to form GeO4 tetrahedra that share corners with two equivalent K(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra,  a cornercorner with one Ge(1)O4 tetrahedra, and  a cornercorner with one Ge(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 29-62°. In the third Ge site, Ge(3) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form GeO4 tetrahedra that share corners with two equivalent K(1)O6 octahedra, corners with two equivalent Ba(1)O6 octahedra,  a cornercorner with one Ge(1)O4 tetrahedra, and  a cornercorner with one Ge(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 30-80°. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one K(4), two equivalent K(5), and two equivalent Ge(2) atoms to form distorted corner-sharing OK3Ge2 trigonal bipyramids. In the second O site, O(2) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(5), one K(6), one Ba(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one K(4), one K(6), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded to one K(3), two equivalent K(5), and two equivalent Ge(3) atoms to form distorted corner-sharing OK3Ge2 trigonal bipyramids. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to one K(1), one K(2), one K(3), one K(5), one Ba(1), and one Ge(3) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one K(2), one K(5), one Ge(1), and one Ge(3) atom. In the seventh O site, O(7) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Ba(1), and one Ge(3) atom. In the eighth O site, O(8) is bonded in a 6-coordinate geometry to one K(1), one K(3), one K(4), one K(5), one Ba(1), and one Ge(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one K(1), one K(5), one K(6), one Ba(1), and one Ge(2) atom. In the tenth O site, O(10) is bonded in a 5-coordinate geometry to one K(1), one K(4), one K(5), one Ba(1), and one Ge(2) atom. is represented by the CIF file [CIF]
data_K4Ba(GeO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.568
_cell_length_b   7.568
_cell_length_c   11.566
_cell_angle_alpha   89.724
_cell_angle_beta   89.724
_cell_angle_gamma   111.614
_symmetry_Int_Tables_number   1
_cell_volume   615.804
_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  0.293  0.158  0.749  1.0
  K  K1  1  0.050  0.950  0.000  1.0
  K  K2  1  0.842  0.707  0.251  1.0
  K  K3  1  0.567  0.433  0.000  1.0
  K  K4  1  0.587  0.413  0.500  1.0
  K  K5  1  0.310  0.583  0.254  1.0
  K  K6  1  0.998  0.002  0.500  1.0
  K  K7  1  0.417  0.690  0.746  1.0
  Ba  Ba8  1  0.817  0.198  0.230  1.0
  Ba  Ba9  1  0.802  0.183  0.770  1.0
  Ge  Ge10  1  0.890  0.667  0.742  1.0
  Ge  Ge11  1  0.333  0.110  0.258  1.0
  Ge  Ge12  1  0.486  0.908  0.476  1.0
  Ge  Ge13  1  0.100  0.508  0.969  1.0
  Ge  Ge14  1  0.092  0.514  0.524  1.0
  Ge  Ge15  1  0.492  0.900  0.031  1.0
  O  O16  1  0.346  0.654  0.500  1.0
  O  O17  1  0.102  0.097  0.239  1.0
  O  O18  1  0.903  0.898  0.761  1.0
  O  O19  1  0.992  0.669  0.598  1.0
  O  O20  1  0.349  0.651  0.000  1.0
  O  O21  1  0.490  0.051  0.918  1.0
  O  O22  1  0.368  0.940  0.159  1.0
  O  O23  1  0.331  0.008  0.402  1.0
  O  O24  1  0.060  0.632  0.841  1.0
  O  O25  1  0.707  0.893  0.078  1.0
  O  O26  1  0.518  0.333  0.249  1.0
  O  O27  1  0.096  0.330  0.614  1.0
  O  O28  1  0.670  0.904  0.386  1.0
  O  O29  1  0.538  0.025  0.608  1.0
  O  O30  1  0.949  0.510  0.082  1.0
  O  O31  1  0.107  0.293  0.922  1.0
  O  O32  1  0.975  0.462  0.392  1.0
  O  O33  1  0.667  0.482  0.751  1.0
[/CIF]
.