The compound described by LiGaGe2Se6 crystallizes in the monoclinic Cc space group. Li(1) is bonded in a distorted see-saw-like geometry to one Se(1), one Se(3), one Se(4), and one Se(5) atom. Ga(1) is bonded to one Se(3), one Se(4), one Se(5), and one Se(6) atom to form GaSe4 tetrahedra that share corners with two equivalent Ge(1)Se4 tetrahedra and corners with two equivalent Ge(2)Se4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one Se(1), one Se(2), one Se(4), and one Se(6) atom to form GeSe4 tetrahedra that share corners with two equivalent Ga(1)Se4 tetrahedra and corners with two equivalent Ge(2)Se4 tetrahedra. In the second Ge site, Ge(2) is bonded to one Se(1), one Se(2), one Se(3), and one Se(5) atom to form GeSe4 tetrahedra that share corners with two equivalent Ga(1)Se4 tetrahedra and corners with two equivalent Ge(1)Se4 tetrahedra. There are six inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ge(1), and one Ge(2) atom. In the second Se site, Se(2) is bonded in a water-like geometry to one Ge(1) and one Ge(2) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ga(1), and one Ge(2) atom. In the fourth Se site, Se(4) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ga(1), and one Ge(1) atom. In the fifth Se site, Se(5) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ga(1), and one Ge(2) atom. In the sixth Se site, Se(6) is bonded in a water-like geometry to one Ga(1) and one Ge(1) atom. is represented by the CIF file [CIF]
data_LiGa(GeSe3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.336
_cell_length_b   7.336
_cell_length_c   12.654
_cell_angle_alpha   82.040
_cell_angle_beta   82.040
_cell_angle_gamma   120.697
_symmetry_Int_Tables_number   1
_cell_volume   562.170
_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
  Li  Li0  1  0.652  0.236  0.909  1.0
  Li  Li1  1  0.236  0.652  0.409  1.0
  Ga  Ga2  1  0.248  0.498  0.000  1.0
  Ga  Ga3  1  0.498  0.248  0.500  1.0
  Ge  Ge4  1  0.218  0.212  0.777  1.0
  Ge  Ge5  1  0.745  0.243  0.223  1.0
  Ge  Ge6  1  0.212  0.218  0.277  1.0
  Ge  Ge7  1  0.243  0.745  0.723  1.0
  Se  Se8  1  0.992  0.356  0.738  1.0
  Se  Se9  1  0.844  0.979  0.259  1.0
  Se  Se10  1  0.356  0.992  0.238  1.0
  Se  Se11  1  0.979  0.844  0.759  1.0
  Se  Se12  1  0.465  0.894  0.539  1.0
  Se  Se13  1  0.184  0.254  0.461  1.0
  Se  Se14  1  0.894  0.465  0.039  1.0
  Se  Se15  1  0.254  0.184  0.961  1.0
  Se  Se16  1  0.481  0.823  0.846  1.0
  Se  Se17  1  0.419  0.572  0.155  1.0
  Se  Se18  1  0.823  0.481  0.346  1.0
  Se  Se19  1  0.572  0.419  0.655  1.0
[/CIF]
.
The compound described by LiGaGe2Se6 crystallizes in the monoclinic Cc space group. Li(1) is bonded in a distorted see-saw-like geometry to one Se(1), one Se(3), one Se(4), and one Se(5) atom. Ga(1) is bonded to one Se(3), one Se(4), one Se(5), and one Se(6) atom to form GaSe4 tetrahedra that share corners with two equivalent Ge(1)Se4 tetrahedra and corners with two equivalent Ge(2)Se4 tetrahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one Se(1), one Se(2), one Se(4), and one Se(6) atom to form GeSe4 tetrahedra that share corners with two equivalent Ga(1)Se4 tetrahedra and corners with two equivalent Ge(2)Se4 tetrahedra. In the second Ge site, Ge(2) is bonded to one Se(1), one Se(2), one Se(3), and one Se(5) atom to form GeSe4 tetrahedra that share corners with two equivalent Ga(1)Se4 tetrahedra and corners with two equivalent Ge(1)Se4 tetrahedra. There are six inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ge(1), and one Ge(2) atom. In the second Se site, Se(2) is bonded in a water-like geometry to one Ge(1) and one Ge(2) atom. In the third Se site, Se(3) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ga(1), and one Ge(2) atom. In the fourth Se site, Se(4) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ga(1), and one Ge(1) atom. In the fifth Se site, Se(5) is bonded in a trigonal non-coplanar geometry to one Li(1), one Ga(1), and one Ge(2) atom. In the sixth Se site, Se(6) is bonded in a water-like geometry to one Ga(1) and one Ge(1) atom. is represented by the CIF file [CIF]
data_LiGa(GeSe3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.336
_cell_length_b   7.336
_cell_length_c   12.654
_cell_angle_alpha   82.040
_cell_angle_beta   82.040
_cell_angle_gamma   120.697
_symmetry_Int_Tables_number   1
_cell_volume   562.170
_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
  Li  Li0  1  0.652  0.236  0.909  1.0
  Li  Li1  1  0.236  0.652  0.409  1.0
  Ga  Ga2  1  0.248  0.498  0.000  1.0
  Ga  Ga3  1  0.498  0.248  0.500  1.0
  Ge  Ge4  1  0.218  0.212  0.777  1.0
  Ge  Ge5  1  0.745  0.243  0.223  1.0
  Ge  Ge6  1  0.212  0.218  0.277  1.0
  Ge  Ge7  1  0.243  0.745  0.723  1.0
  Se  Se8  1  0.992  0.356  0.738  1.0
  Se  Se9  1  0.844  0.979  0.259  1.0
  Se  Se10  1  0.356  0.992  0.238  1.0
  Se  Se11  1  0.979  0.844  0.759  1.0
  Se  Se12  1  0.465  0.894  0.539  1.0
  Se  Se13  1  0.184  0.254  0.461  1.0
  Se  Se14  1  0.894  0.465  0.039  1.0
  Se  Se15  1  0.254  0.184  0.961  1.0
  Se  Se16  1  0.481  0.823  0.846  1.0
  Se  Se17  1  0.419  0.572  0.155  1.0
  Se  Se18  1  0.823  0.481  0.346  1.0
  Se  Se19  1  0.572  0.419  0.655  1.0
[/CIF]
.