The structure described by Li2MgGeO4 is Theoretical Carbon Structure-derived structured and crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, corners with four equivalent Ge(1)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Mg(1)O4 tetrahedra, corners with four equivalent Ge(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. Mg(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MgO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Ge(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. 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 four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, and corners with four equivalent Mg(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Mg(1), and one Ge(1) atom to form corner-sharing OLi2MgGe tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Mg(1), and one Ge(1) atom to form a mixture of edge and corner-sharing OLi2MgGe tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Mg(1), and one Ge(1) atom to form a mixture of edge and corner-sharing OLi2MgGe tetrahedra. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Mg(1), and one Ge(1) atom to form a mixture of edge and corner-sharing OLi2MgGe trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2MgGeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.174
_cell_length_b   6.475
_cell_length_c   11.073
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   371.012
_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
  Li  Li0  1  0.306  0.254  0.075  1.0
  Li  Li1  1  0.194  0.254  0.575  1.0
  Li  Li2  1  0.694  0.754  0.925  1.0
  Li  Li3  1  0.806  0.754  0.425  1.0
  Li  Li4  1  0.186  0.001  0.336  1.0
  Li  Li5  1  0.814  0.501  0.664  1.0
  Li  Li6  1  0.686  0.501  0.164  1.0
  Li  Li7  1  0.314  0.001  0.836  1.0
  Mg  Mg8  1  0.316  0.497  0.832  1.0
  Mg  Mg9  1  0.684  0.997  0.168  1.0
  Mg  Mg10  1  0.816  0.997  0.668  1.0
  Mg  Mg11  1  0.184  0.497  0.332  1.0
  Ge  Ge12  1  0.816  0.249  0.915  1.0
  Ge  Ge13  1  0.684  0.249  0.415  1.0
  Ge  Ge14  1  0.184  0.749  0.085  1.0
  Ge  Ge15  1  0.316  0.749  0.585  1.0
  O  O16  1  0.162  0.254  0.910  1.0
  O  O17  1  0.338  0.254  0.410  1.0
  O  O18  1  0.838  0.754  0.090  1.0
  O  O19  1  0.662  0.754  0.590  1.0
  O  O20  1  0.702  0.474  0.839  1.0
  O  O21  1  0.793  0.025  0.337  1.0
  O  O22  1  0.298  0.974  0.161  1.0
  O  O23  1  0.207  0.525  0.663  1.0
  O  O24  1  0.293  0.525  0.163  1.0
  O  O25  1  0.202  0.974  0.661  1.0
  O  O26  1  0.707  0.025  0.837  1.0
  O  O27  1  0.798  0.474  0.339  1.0
  O  O28  1  0.705  0.247  0.066  1.0
  O  O29  1  0.795  0.247  0.566  1.0
  O  O30  1  0.295  0.747  0.934  1.0
  O  O31  1  0.205  0.747  0.434  1.0
[/CIF]
.
The structure described by Li2MgGeO4 is Theoretical Carbon Structure-derived structured and crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with two equivalent Li(2)O4 tetrahedra, corners with two equivalent Mg(1)O4 tetrahedra, corners with four equivalent Ge(1)O4 tetrahedra,  an edgeedge with one Li(2)O4 tetrahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form LiO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Mg(1)O4 tetrahedra, corners with four equivalent Ge(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. Mg(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MgO4 tetrahedra that share corners with two equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, corners with four equivalent Ge(1)O4 tetrahedra, and  an edgeedge with one Li(1)O4 tetrahedra. 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 four equivalent Li(1)O4 tetrahedra, corners with four equivalent Li(2)O4 tetrahedra, and corners with four equivalent Mg(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(1), one Li(2), one Mg(1), and one Ge(1) atom to form corner-sharing OLi2MgGe tetrahedra. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Mg(1), and one Ge(1) atom to form a mixture of edge and corner-sharing OLi2MgGe tetrahedra. In the third O site, O(3) is bonded to one Li(1), one Li(2), one Mg(1), and one Ge(1) atom to form a mixture of edge and corner-sharing OLi2MgGe tetrahedra. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), one Mg(1), and one Ge(1) atom to form a mixture of edge and corner-sharing OLi2MgGe trigonal pyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2MgGeO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.174
_cell_length_b   6.475
_cell_length_c   11.073
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   371.012
_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
  Li  Li0  1  0.306  0.254  0.075  1.0
  Li  Li1  1  0.194  0.254  0.575  1.0
  Li  Li2  1  0.694  0.754  0.925  1.0
  Li  Li3  1  0.806  0.754  0.425  1.0
  Li  Li4  1  0.186  0.001  0.336  1.0
  Li  Li5  1  0.814  0.501  0.664  1.0
  Li  Li6  1  0.686  0.501  0.164  1.0
  Li  Li7  1  0.314  0.001  0.836  1.0
  Mg  Mg8  1  0.316  0.497  0.832  1.0
  Mg  Mg9  1  0.684  0.997  0.168  1.0
  Mg  Mg10  1  0.816  0.997  0.668  1.0
  Mg  Mg11  1  0.184  0.497  0.332  1.0
  Ge  Ge12  1  0.816  0.249  0.915  1.0
  Ge  Ge13  1  0.684  0.249  0.415  1.0
  Ge  Ge14  1  0.184  0.749  0.085  1.0
  Ge  Ge15  1  0.316  0.749  0.585  1.0
  O  O16  1  0.162  0.254  0.910  1.0
  O  O17  1  0.338  0.254  0.410  1.0
  O  O18  1  0.838  0.754  0.090  1.0
  O  O19  1  0.662  0.754  0.590  1.0
  O  O20  1  0.702  0.474  0.839  1.0
  O  O21  1  0.793  0.025  0.337  1.0
  O  O22  1  0.298  0.974  0.161  1.0
  O  O23  1  0.207  0.525  0.663  1.0
  O  O24  1  0.293  0.525  0.163  1.0
  O  O25  1  0.202  0.974  0.661  1.0
  O  O26  1  0.707  0.025  0.837  1.0
  O  O27  1  0.798  0.474  0.339  1.0
  O  O28  1  0.705  0.247  0.066  1.0
  O  O29  1  0.795  0.247  0.566  1.0
  O  O30  1  0.295  0.747  0.934  1.0
  O  O31  1  0.205  0.747  0.434  1.0
[/CIF]
.