The compound described by Rb2Li2GeO4 crystallizes in the triclinic P-1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(3) atoms. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(4), and two equivalent O(2) atoms. In the second Li site, Li(2) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form distorted LiO4 trigonal pyramids that share corners with two equivalent Ge(1)O4 tetrahedra,  an edgeedge with one Ge(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. 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 two equivalent Li(2)O4 trigonal pyramids and  an edgeedge with one Li(2)O4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Li(1), one Li(2), and one Ge(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Li(2), two equivalent Li(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to two equivalent Rb(1), four equivalent Rb(2), and one Ge(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Li(1), two equivalent Li(2), and one Ge(1) atom. is represented by the CIF card [CIF]
data_Rb2Li2GeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.682
_cell_length_b   5.824
_cell_length_c   8.980
_cell_angle_alpha   83.403
_cell_angle_beta   74.417
_cell_angle_gamma   85.102
_symmetry_Int_Tables_number   1
_cell_volume   283.883
_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
  Rb  Rb0  1  0.470  0.850  0.729  1.0
  Rb  Rb1  1  0.530  0.150  0.271  1.0
  Rb  Rb2  1  0.788  0.727  0.018  1.0
  Rb  Rb3  1  0.212  0.273  0.982  1.0
  Li  Li4  1  0.070  0.814  0.561  1.0
  Li  Li5  1  0.930  0.186  0.439  1.0
  Li  Li6  1  0.304  0.409  0.581  1.0
  Li  Li7  1  0.696  0.591  0.419  1.0
  Ge  Ge8  1  0.145  0.687  0.276  1.0
  Ge  Ge9  1  0.855  0.313  0.724  1.0
  O  O10  1  0.011  0.569  0.724  1.0
  O  O11  1  0.989  0.431  0.276  1.0
  O  O12  1  0.901  0.869  0.390  1.0
  O  O13  1  0.099  0.131  0.610  1.0
  O  O14  1  0.273  0.800  0.084  1.0
  O  O15  1  0.727  0.200  0.916  1.0
  O  O16  1  0.364  0.640  0.391  1.0
  O  O17  1  0.636  0.360  0.609  1.0
[/CIF]
.
The compound described by Rb2Li2GeO4 crystallizes in the triclinic P-1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 6-coordinate geometry to two equivalent O(1) and four equivalent O(3) atoms. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 4-coordinate geometry to one O(1), one O(4), and two equivalent O(2) atoms. In the second Li site, Li(2) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form distorted LiO4 trigonal pyramids that share corners with two equivalent Ge(1)O4 tetrahedra,  an edgeedge with one Ge(1)O4 tetrahedra, and  an edgeedge with one Li(2)O4 trigonal pyramid. 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 two equivalent Li(2)O4 trigonal pyramids and  an edgeedge with one Li(2)O4 trigonal pyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Rb(1), two equivalent Rb(2), one Li(1), one Li(2), and one Ge(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Li(2), two equivalent Li(1), and one Ge(1) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to two equivalent Rb(1), four equivalent Rb(2), and one Ge(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Rb(1), one Li(1), two equivalent Li(2), and one Ge(1) atom. is represented by the CIF card [CIF]
data_Rb2Li2GeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.682
_cell_length_b   5.824
_cell_length_c   8.980
_cell_angle_alpha   83.403
_cell_angle_beta   74.417
_cell_angle_gamma   85.102
_symmetry_Int_Tables_number   1
_cell_volume   283.883
_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
  Rb  Rb0  1  0.470  0.850  0.729  1.0
  Rb  Rb1  1  0.530  0.150  0.271  1.0
  Rb  Rb2  1  0.788  0.727  0.018  1.0
  Rb  Rb3  1  0.212  0.273  0.982  1.0
  Li  Li4  1  0.070  0.814  0.561  1.0
  Li  Li5  1  0.930  0.186  0.439  1.0
  Li  Li6  1  0.304  0.409  0.581  1.0
  Li  Li7  1  0.696  0.591  0.419  1.0
  Ge  Ge8  1  0.145  0.687  0.276  1.0
  Ge  Ge9  1  0.855  0.313  0.724  1.0
  O  O10  1  0.011  0.569  0.724  1.0
  O  O11  1  0.989  0.431  0.276  1.0
  O  O12  1  0.901  0.869  0.390  1.0
  O  O13  1  0.099  0.131  0.610  1.0
  O  O14  1  0.273  0.800  0.084  1.0
  O  O15  1  0.727  0.200  0.916  1.0
  O  O16  1  0.364  0.640  0.391  1.0
  O  O17  1  0.636  0.360  0.609  1.0
[/CIF]
.