The material described by Li8Sm7Ge10 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one Sm(1), two equivalent Sm(3), one Ge(2), one Ge(4), and two equivalent Ge(3) atoms to form distorted LiSm3Ge4 tetrahedra that share corners with five equivalent Li(1)Sm3Ge4 tetrahedra, edges with two equivalent Sm(4)Ge6 octahedra, edges with two equivalent Li(1)Sm3Ge4 tetrahedra, edges with four equivalent Li(2)Sm3Ge4 tetrahedra, faces with two equivalent Li(1)Sm3Ge4 tetrahedra, and faces with two equivalent Li(2)Sm3Ge4 tetrahedra. In the second Li site, Li(2) is bonded to one Sm(3), two equivalent Sm(1), one Ge(1), one Ge(3), and two equivalent Ge(2) atoms to form distorted LiSm3Ge4 tetrahedra that share  a cornercorner with one Sm(4)Ge6 octahedra, corners with four equivalent Li(2)Sm3Ge4 tetrahedra, edges with two equivalent Li(2)Sm3Ge4 tetrahedra, edges with four equivalent Li(1)Sm3Ge4 tetrahedra, faces with two equivalent Li(1)Sm3Ge4 tetrahedra, and faces with two equivalent Li(2)Sm3Ge4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 12-coordinate geometry to two equivalent Li(1), four equivalent Li(2), two equivalent Ge(3), and four equivalent Ge(1) atoms. In the second Sm site, Sm(2) is bonded in a 9-coordinate geometry to one Ge(2) and eight equivalent Ge(1) atoms. In the third Sm site, Sm(3) is bonded in a 12-coordinate geometry to two equivalent Li(2), four equivalent Li(1), two equivalent Ge(2), and four equivalent Ge(4) atoms. In the fourth Sm site, Sm(4) is bonded to two equivalent Ge(3) and four equivalent Ge(4) atoms to form SmGe6 octahedra that share corners with four equivalent Li(2)Sm3Ge4 tetrahedra, edges with two equivalent Sm(4)Ge6 octahedra, and edges with eight equivalent Li(1)Sm3Ge4 tetrahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 6-coordinate geometry to two equivalent Li(1), four equivalent Li(2), one Sm(2), and two equivalent Sm(3) atoms. In the second Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Li(2), four equivalent Li(1), one Sm(4), and two equivalent Sm(1) atoms. In the third Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Li(1), two equivalent Sm(4), four equivalent Sm(3), and one Ge(4) atom. In the fourth Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Li(2), two equivalent Sm(1), four equivalent Sm(2), and two equivalent Ge(1) atoms. is represented by the CIF card [CIF]
data_Li8Sm7Ge10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.984
_cell_length_b   16.984
_cell_length_c   4.420
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   156.913
_symmetry_Int_Tables_number   1
_cell_volume   499.970
_cell_formula_units_Z   1
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  0.266  0.116  0.500  1.0
  Li  Li1  1  0.734  0.884  0.500  1.0
  Li  Li2  1  0.116  0.266  0.500  1.0
  Li  Li3  1  0.884  0.734  0.500  1.0
  Li  Li4  1  0.455  0.168  0.000  1.0
  Li  Li5  1  0.545  0.832  0.000  1.0
  Li  Li6  1  0.168  0.455  0.000  1.0
  Li  Li7  1  0.832  0.545  0.000  1.0
  Sm  Sm8  1  0.162  0.838  0.500  1.0
  Sm  Sm9  1  0.838  0.162  0.500  1.0
  Sm  Sm10  1  0.279  0.721  0.500  1.0
  Sm  Sm11  1  0.721  0.279  0.500  1.0
  Sm  Sm12  1  0.444  0.556  0.000  1.0
  Sm  Sm13  1  0.556  0.444  0.000  1.0
  Sm  Sm14  1  0.000  0.000  0.000  1.0
  Ge  Ge15  1  0.401  0.971  0.000  1.0
  Ge  Ge16  1  0.599  0.029  0.000  1.0
  Ge  Ge17  1  0.971  0.401  0.000  1.0
  Ge  Ge18  1  0.029  0.599  0.000  1.0
  Ge  Ge19  1  0.374  0.626  0.500  1.0
  Ge  Ge20  1  0.626  0.374  0.500  1.0
  Ge  Ge21  1  0.094  0.906  0.000  1.0
  Ge  Ge22  1  0.906  0.094  0.000  1.0
  Ge  Ge23  1  0.312  0.312  0.500  1.0
  Ge  Ge24  1  0.688  0.688  0.500  1.0
[/CIF]
.
The material described by Li8Sm7Ge10 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one Sm(1), two equivalent Sm(3), one Ge(2), one Ge(4), and two equivalent Ge(3) atoms to form distorted LiSm3Ge4 tetrahedra that share corners with five equivalent Li(1)Sm3Ge4 tetrahedra, edges with two equivalent Sm(4)Ge6 octahedra, edges with two equivalent Li(1)Sm3Ge4 tetrahedra, edges with four equivalent Li(2)Sm3Ge4 tetrahedra, faces with two equivalent Li(1)Sm3Ge4 tetrahedra, and faces with two equivalent Li(2)Sm3Ge4 tetrahedra. In the second Li site, Li(2) is bonded to one Sm(3), two equivalent Sm(1), one Ge(1), one Ge(3), and two equivalent Ge(2) atoms to form distorted LiSm3Ge4 tetrahedra that share  a cornercorner with one Sm(4)Ge6 octahedra, corners with four equivalent Li(2)Sm3Ge4 tetrahedra, edges with two equivalent Li(2)Sm3Ge4 tetrahedra, edges with four equivalent Li(1)Sm3Ge4 tetrahedra, faces with two equivalent Li(1)Sm3Ge4 tetrahedra, and faces with two equivalent Li(2)Sm3Ge4 tetrahedra. The corner-sharing octahedral tilt angles are 52°. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a 12-coordinate geometry to two equivalent Li(1), four equivalent Li(2), two equivalent Ge(3), and four equivalent Ge(1) atoms. In the second Sm site, Sm(2) is bonded in a 9-coordinate geometry to one Ge(2) and eight equivalent Ge(1) atoms. In the third Sm site, Sm(3) is bonded in a 12-coordinate geometry to two equivalent Li(2), four equivalent Li(1), two equivalent Ge(2), and four equivalent Ge(4) atoms. In the fourth Sm site, Sm(4) is bonded to two equivalent Ge(3) and four equivalent Ge(4) atoms to form SmGe6 octahedra that share corners with four equivalent Li(2)Sm3Ge4 tetrahedra, edges with two equivalent Sm(4)Ge6 octahedra, and edges with eight equivalent Li(1)Sm3Ge4 tetrahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 6-coordinate geometry to two equivalent Li(1), four equivalent Li(2), one Sm(2), and two equivalent Sm(3) atoms. In the second Ge site, Ge(3) is bonded in a 9-coordinate geometry to two equivalent Li(2), four equivalent Li(1), one Sm(4), and two equivalent Sm(1) atoms. In the third Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Li(1), two equivalent Sm(4), four equivalent Sm(3), and one Ge(4) atom. In the fourth Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Li(2), two equivalent Sm(1), four equivalent Sm(2), and two equivalent Ge(1) atoms. is represented by the CIF card [CIF]
data_Li8Sm7Ge10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   16.984
_cell_length_b   16.984
_cell_length_c   4.420
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   156.913
_symmetry_Int_Tables_number   1
_cell_volume   499.970
_cell_formula_units_Z   1
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  0.266  0.116  0.500  1.0
  Li  Li1  1  0.734  0.884  0.500  1.0
  Li  Li2  1  0.116  0.266  0.500  1.0
  Li  Li3  1  0.884  0.734  0.500  1.0
  Li  Li4  1  0.455  0.168  0.000  1.0
  Li  Li5  1  0.545  0.832  0.000  1.0
  Li  Li6  1  0.168  0.455  0.000  1.0
  Li  Li7  1  0.832  0.545  0.000  1.0
  Sm  Sm8  1  0.162  0.838  0.500  1.0
  Sm  Sm9  1  0.838  0.162  0.500  1.0
  Sm  Sm10  1  0.279  0.721  0.500  1.0
  Sm  Sm11  1  0.721  0.279  0.500  1.0
  Sm  Sm12  1  0.444  0.556  0.000  1.0
  Sm  Sm13  1  0.556  0.444  0.000  1.0
  Sm  Sm14  1  0.000  0.000  0.000  1.0
  Ge  Ge15  1  0.401  0.971  0.000  1.0
  Ge  Ge16  1  0.599  0.029  0.000  1.0
  Ge  Ge17  1  0.971  0.401  0.000  1.0
  Ge  Ge18  1  0.029  0.599  0.000  1.0
  Ge  Ge19  1  0.374  0.626  0.500  1.0
  Ge  Ge20  1  0.626  0.374  0.500  1.0
  Ge  Ge21  1  0.094  0.906  0.000  1.0
  Ge  Ge22  1  0.906  0.094  0.000  1.0
  Ge  Ge23  1  0.312  0.312  0.500  1.0
  Ge  Ge24  1  0.688  0.688  0.500  1.0
[/CIF]
.