The compound described by Li8EuSn7 crystallizes in the orthorhombic Cmcm space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to two equivalent Li(2), one Eu(1), one Sn(3), and four equivalent Sn(1) atoms. In the second Li site, Li(2) is bonded to two equivalent Li(1), two equivalent Li(4), four equivalent Li(5), and four equivalent Sn(1) atoms to form LiLi8Sn4 cuboctahedra that share corners with two equivalent Li(2)Li8Sn4 cuboctahedra, edges with four equivalent Sn(1)Li8Eu2Sn2 cuboctahedra, faces with two equivalent Li(2)Li8Sn4 cuboctahedra, and faces with four equivalent Sn(1)Li8Eu2Sn2 cuboctahedra. In the third Li site, Li(3) is bonded in a 9-coordinate geometry to two equivalent Li(3), one Eu(1), one Sn(4), two equivalent Sn(2), and three equivalent Sn(5) atoms. In the fourth Li site, Li(4) is bonded in a 5-coordinate geometry to one Li(2), one Eu(1), one Sn(3), two equivalent Sn(1), and two equivalent Sn(5) atoms. In the fifth Li site, Li(5) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Sn(4), two equivalent Sn(1), and two equivalent Sn(3) atoms. Eu(1) is bonded in a 15-coordinate geometry to one Li(1), two equivalent Li(3), two equivalent Li(4), two equivalent Sn(2), four equivalent Sn(1), and four equivalent Sn(5) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent Li(1), two equivalent Li(2), two equivalent Li(4), two equivalent Li(5), two equivalent Eu(1), one Sn(1), and one Sn(5) atom to form distorted SnLi8Eu2Sn2 cuboctahedra that share corners with two equivalent Sn(1)Li8Eu2Sn2 cuboctahedra, edges with two equivalent Li(2)Li8Sn4 cuboctahedra, edges with two equivalent Sn(1)Li8Eu2Sn2 cuboctahedra, faces with two equivalent Li(2)Li8Sn4 cuboctahedra, and faces with four equivalent Sn(1)Li8Eu2Sn2 cuboctahedra. In the second Sn site, Sn(2) is bonded in a 4-coordinate geometry to four equivalent Li(3) and two equivalent Eu(1) atoms. In the third Sn site, Sn(3) is bonded in a 7-coordinate geometry to one Li(1), two equivalent Li(4), four equivalent Li(5), and two equivalent Sn(4) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Li(3), two equivalent Li(5), two equivalent Sn(3), and two equivalent Sn(5) atoms. In the fifth Sn site, Sn(5) is bonded in a 5-coordinate geometry to two equivalent Li(4), three equivalent Li(3), two equivalent Eu(1), one Sn(1), and one Sn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li8EuSn7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.708
_cell_length_b   13.708
_cell_length_c   11.565
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   160.650
_symmetry_Int_Tables_number   1
_cell_volume   720.060
_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  0.977  0.023  0.250  1.0
  Li  Li1  1  0.023  0.977  0.750  1.0
  Li  Li2  1  0.000  0.000  0.000  1.0
  Li  Li3  1  0.000  0.000  0.500  1.0
  Li  Li4  1  0.757  0.243  0.094  1.0
  Li  Li5  1  0.243  0.757  0.906  1.0
  Li  Li6  1  0.243  0.757  0.594  1.0
  Li  Li7  1  0.757  0.243  0.406  1.0
  Li  Li8  1  0.892  0.108  0.518  1.0
  Li  Li9  1  0.108  0.892  0.482  1.0
  Li  Li10  1  0.108  0.892  0.018  1.0
  Li  Li11  1  0.892  0.108  0.982  1.0
  Li  Li12  1  0.545  0.455  0.125  1.0
  Li  Li13  1  0.455  0.545  0.875  1.0
  Li  Li14  1  0.455  0.545  0.625  1.0
  Li  Li15  1  0.545  0.455  0.375  1.0
  Eu  Eu16  1  0.858  0.142  0.250  1.0
  Eu  Eu17  1  0.142  0.858  0.750  1.0
  Sn  Sn18  1  0.435  0.565  0.121  1.0
  Sn  Sn19  1  0.565  0.435  0.879  1.0
  Sn  Sn20  1  0.565  0.435  0.621  1.0
  Sn  Sn21  1  0.435  0.565  0.379  1.0
  Sn  Sn22  1  0.263  0.737  0.250  1.0
  Sn  Sn23  1  0.737  0.263  0.750  1.0
  Sn  Sn24  1  0.080  0.920  0.250  1.0
  Sn  Sn25  1  0.920  0.080  0.750  1.0
  Sn  Sn26  1  0.655  0.345  0.250  1.0
  Sn  Sn27  1  0.345  0.655  0.750  1.0
  Sn  Sn28  1  0.670  0.330  0.545  1.0
  Sn  Sn29  1  0.330  0.670  0.455  1.0
  Sn  Sn30  1  0.330  0.670  0.045  1.0
  Sn  Sn31  1  0.670  0.330  0.955  1.0
[/CIF]
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The compound described by Li8EuSn7 crystallizes in the orthorhombic Cmcm space group. There are five inequivalent Li sites. In the first Li site, Li(1) is bonded in a 5-coordinate geometry to two equivalent Li(2), one Eu(1), one Sn(3), and four equivalent Sn(1) atoms. In the second Li site, Li(2) is bonded to two equivalent Li(1), two equivalent Li(4), four equivalent Li(5), and four equivalent Sn(1) atoms to form LiLi8Sn4 cuboctahedra that share corners with two equivalent Li(2)Li8Sn4 cuboctahedra, edges with four equivalent Sn(1)Li8Eu2Sn2 cuboctahedra, faces with two equivalent Li(2)Li8Sn4 cuboctahedra, and faces with four equivalent Sn(1)Li8Eu2Sn2 cuboctahedra. In the third Li site, Li(3) is bonded in a 9-coordinate geometry to two equivalent Li(3), one Eu(1), one Sn(4), two equivalent Sn(2), and three equivalent Sn(5) atoms. In the fourth Li site, Li(4) is bonded in a 5-coordinate geometry to one Li(2), one Eu(1), one Sn(3), two equivalent Sn(1), and two equivalent Sn(5) atoms. In the fifth Li site, Li(5) is bonded in a 4-coordinate geometry to two equivalent Li(2), one Sn(4), two equivalent Sn(1), and two equivalent Sn(3) atoms. Eu(1) is bonded in a 15-coordinate geometry to one Li(1), two equivalent Li(3), two equivalent Li(4), two equivalent Sn(2), four equivalent Sn(1), and four equivalent Sn(5) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(1) is bonded to two equivalent Li(1), two equivalent Li(2), two equivalent Li(4), two equivalent Li(5), two equivalent Eu(1), one Sn(1), and one Sn(5) atom to form distorted SnLi8Eu2Sn2 cuboctahedra that share corners with two equivalent Sn(1)Li8Eu2Sn2 cuboctahedra, edges with two equivalent Li(2)Li8Sn4 cuboctahedra, edges with two equivalent Sn(1)Li8Eu2Sn2 cuboctahedra, faces with two equivalent Li(2)Li8Sn4 cuboctahedra, and faces with four equivalent Sn(1)Li8Eu2Sn2 cuboctahedra. In the second Sn site, Sn(2) is bonded in a 4-coordinate geometry to four equivalent Li(3) and two equivalent Eu(1) atoms. In the third Sn site, Sn(3) is bonded in a 7-coordinate geometry to one Li(1), two equivalent Li(4), four equivalent Li(5), and two equivalent Sn(4) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Li(3), two equivalent Li(5), two equivalent Sn(3), and two equivalent Sn(5) atoms. In the fifth Sn site, Sn(5) is bonded in a 5-coordinate geometry to two equivalent Li(4), three equivalent Li(3), two equivalent Eu(1), one Sn(1), and one Sn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li8EuSn7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.708
_cell_length_b   13.708
_cell_length_c   11.565
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   160.650
_symmetry_Int_Tables_number   1
_cell_volume   720.060
_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  0.977  0.023  0.250  1.0
  Li  Li1  1  0.023  0.977  0.750  1.0
  Li  Li2  1  0.000  0.000  0.000  1.0
  Li  Li3  1  0.000  0.000  0.500  1.0
  Li  Li4  1  0.757  0.243  0.094  1.0
  Li  Li5  1  0.243  0.757  0.906  1.0
  Li  Li6  1  0.243  0.757  0.594  1.0
  Li  Li7  1  0.757  0.243  0.406  1.0
  Li  Li8  1  0.892  0.108  0.518  1.0
  Li  Li9  1  0.108  0.892  0.482  1.0
  Li  Li10  1  0.108  0.892  0.018  1.0
  Li  Li11  1  0.892  0.108  0.982  1.0
  Li  Li12  1  0.545  0.455  0.125  1.0
  Li  Li13  1  0.455  0.545  0.875  1.0
  Li  Li14  1  0.455  0.545  0.625  1.0
  Li  Li15  1  0.545  0.455  0.375  1.0
  Eu  Eu16  1  0.858  0.142  0.250  1.0
  Eu  Eu17  1  0.142  0.858  0.750  1.0
  Sn  Sn18  1  0.435  0.565  0.121  1.0
  Sn  Sn19  1  0.565  0.435  0.879  1.0
  Sn  Sn20  1  0.565  0.435  0.621  1.0
  Sn  Sn21  1  0.435  0.565  0.379  1.0
  Sn  Sn22  1  0.263  0.737  0.250  1.0
  Sn  Sn23  1  0.737  0.263  0.750  1.0
  Sn  Sn24  1  0.080  0.920  0.250  1.0
  Sn  Sn25  1  0.920  0.080  0.750  1.0
  Sn  Sn26  1  0.655  0.345  0.250  1.0
  Sn  Sn27  1  0.345  0.655  0.750  1.0
  Sn  Sn28  1  0.670  0.330  0.545  1.0
  Sn  Sn29  1  0.330  0.670  0.455  1.0
  Sn  Sn30  1  0.330  0.670  0.045  1.0
  Sn  Sn31  1  0.670  0.330  0.955  1.0
[/CIF]
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