The compound described by Li6Eu5Sn9 crystallizes in the orthorhombic Cmcm space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent Eu(3), one Sn(1), one Sn(4), and two equivalent Sn(2) atoms to form distorted edge-sharing LiEu2Sn4 tetrahedra. In the second Li site, Li(2) is bonded in a distorted trigonal non-coplanar geometry to one Eu(1), two equivalent Eu(3), one Sn(5), two equivalent Sn(2), and two equivalent Sn(3) atoms. In the third Li site, Li(3) is bonded in a distorted trigonal non-coplanar geometry to one Eu(1), one Eu(4), one Sn(2), and two equivalent Sn(1) atoms. There are four inequivalent Eu sites. In the first Eu site, Eu(4) is bonded in a 10-coordinate geometry to two equivalent Li(3), four equivalent Sn(1), and four equivalent Sn(4) atoms. In the second Eu site, Eu(1) is bonded in a 14-coordinate geometry to two equivalent Li(2), two equivalent Li(3), two equivalent Sn(3), four equivalent Sn(1), and four equivalent Sn(2) atoms. In the third Eu site, Eu(2) is bonded in a 9-coordinate geometry to one Sn(3), four equivalent Sn(4), and four equivalent Sn(5) atoms. In the fourth Eu site, Eu(3) is bonded in a 11-coordinate geometry to two equivalent Li(1), two equivalent Li(2), one Sn(2), two equivalent Sn(4), and four equivalent Sn(5) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(5) is bonded in a 9-coordinate geometry to one Li(2), two equivalent Eu(2), four equivalent Eu(3), one Sn(4), and one Sn(5) atom. In the second Sn site, Sn(1) is bonded in a 3-coordinate geometry to one Li(1), two equivalent Li(3), two equivalent Eu(1), two equivalent Eu(4), and one Sn(2) atom. In the third Sn site, Sn(2) is bonded in a 10-coordinate geometry to one Li(3), two equivalent Li(1), two equivalent Li(2), one Eu(3), two equivalent Eu(1), one Sn(1), and one Sn(3) atom. In the fourth Sn site, Sn(3) is bonded in a 4-coordinate geometry to four equivalent Li(2), one Eu(2), two equivalent Eu(1), and two equivalent Sn(2) atoms. In the fifth Sn site, Sn(4) is bonded in a 9-coordinate geometry to one Li(1), two equivalent Eu(2), two equivalent Eu(3), two equivalent Eu(4), one Sn(4), and one Sn(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li6Eu5Sn9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.860
_cell_length_b   14.758
_cell_length_c   15.091
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   99.477
_symmetry_Int_Tables_number   1
_cell_volume   1067.604
_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  0.839  0.678  0.027  1.0
  Li  Li1  1  0.161  0.322  0.973  1.0
  Li  Li2  1  0.839  0.678  0.473  1.0
  Li  Li3  1  0.161  0.322  0.527  1.0
  Li  Li4  1  0.098  0.197  0.153  1.0
  Li  Li5  1  0.902  0.803  0.847  1.0
  Li  Li6  1  0.098  0.197  0.347  1.0
  Li  Li7  1  0.902  0.803  0.653  1.0
  Li  Li8  1  0.736  0.471  0.948  1.0
  Li  Li9  1  0.264  0.529  0.052  1.0
  Li  Li10  1  0.736  0.471  0.552  1.0
  Li  Li11  1  0.264  0.529  0.448  1.0
  Eu  Eu12  1  0.200  0.401  0.250  1.0
  Eu  Eu13  1  0.800  0.599  0.750  1.0
  Eu  Eu14  1  0.491  0.983  0.250  1.0
  Eu  Eu15  1  0.509  0.017  0.750  1.0
  Eu  Eu16  1  0.568  0.135  0.995  1.0
  Eu  Eu17  1  0.432  0.865  0.005  1.0
  Eu  Eu18  1  0.568  0.135  0.505  1.0
  Eu  Eu19  1  0.432  0.865  0.495  1.0
  Eu  Eu20  1  0.343  0.686  0.250  1.0
  Eu  Eu21  1  0.657  0.314  0.750  1.0
  Sn  Sn22  1  0.767  0.534  0.153  1.0
  Sn  Sn23  1  0.233  0.466  0.847  1.0
  Sn  Sn24  1  0.767  0.534  0.347  1.0
  Sn  Sn25  1  0.233  0.466  0.653  1.0
  Sn  Sn26  1  0.671  0.342  0.094  1.0
  Sn  Sn27  1  0.329  0.658  0.906  1.0
  Sn  Sn28  1  0.671  0.342  0.406  1.0
  Sn  Sn29  1  0.329  0.658  0.594  1.0
  Sn  Sn30  1  0.611  0.222  0.250  1.0
  Sn  Sn31  1  0.389  0.778  0.750  1.0
  Sn  Sn32  1  0.912  0.824  0.153  1.0
  Sn  Sn33  1  0.088  0.176  0.847  1.0
  Sn  Sn34  1  0.912  0.824  0.347  1.0
  Sn  Sn35  1  0.088  0.176  0.653  1.0
  Sn  Sn36  1  0.008  0.016  0.095  1.0
  Sn  Sn37  1  0.992  0.984  0.905  1.0
  Sn  Sn38  1  0.008  0.016  0.405  1.0
  Sn  Sn39  1  0.992  0.984  0.595  1.0
[/CIF]
.
The compound described by Li6Eu5Sn9 crystallizes in the orthorhombic Cmcm space group. There are three inequivalent Li sites. In the first Li site, Li(1) is bonded to two equivalent Eu(3), one Sn(1), one Sn(4), and two equivalent Sn(2) atoms to form distorted edge-sharing LiEu2Sn4 tetrahedra. In the second Li site, Li(2) is bonded in a distorted trigonal non-coplanar geometry to one Eu(1), two equivalent Eu(3), one Sn(5), two equivalent Sn(2), and two equivalent Sn(3) atoms. In the third Li site, Li(3) is bonded in a distorted trigonal non-coplanar geometry to one Eu(1), one Eu(4), one Sn(2), and two equivalent Sn(1) atoms. There are four inequivalent Eu sites. In the first Eu site, Eu(4) is bonded in a 10-coordinate geometry to two equivalent Li(3), four equivalent Sn(1), and four equivalent Sn(4) atoms. In the second Eu site, Eu(1) is bonded in a 14-coordinate geometry to two equivalent Li(2), two equivalent Li(3), two equivalent Sn(3), four equivalent Sn(1), and four equivalent Sn(2) atoms. In the third Eu site, Eu(2) is bonded in a 9-coordinate geometry to one Sn(3), four equivalent Sn(4), and four equivalent Sn(5) atoms. In the fourth Eu site, Eu(3) is bonded in a 11-coordinate geometry to two equivalent Li(1), two equivalent Li(2), one Sn(2), two equivalent Sn(4), and four equivalent Sn(5) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(5) is bonded in a 9-coordinate geometry to one Li(2), two equivalent Eu(2), four equivalent Eu(3), one Sn(4), and one Sn(5) atom. In the second Sn site, Sn(1) is bonded in a 3-coordinate geometry to one Li(1), two equivalent Li(3), two equivalent Eu(1), two equivalent Eu(4), and one Sn(2) atom. In the third Sn site, Sn(2) is bonded in a 10-coordinate geometry to one Li(3), two equivalent Li(1), two equivalent Li(2), one Eu(3), two equivalent Eu(1), one Sn(1), and one Sn(3) atom. In the fourth Sn site, Sn(3) is bonded in a 4-coordinate geometry to four equivalent Li(2), one Eu(2), two equivalent Eu(1), and two equivalent Sn(2) atoms. In the fifth Sn site, Sn(4) is bonded in a 9-coordinate geometry to one Li(1), two equivalent Eu(2), two equivalent Eu(3), two equivalent Eu(4), one Sn(4), and one Sn(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li6Eu5Sn9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.860
_cell_length_b   14.758
_cell_length_c   15.091
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   99.477
_symmetry_Int_Tables_number   1
_cell_volume   1067.604
_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  0.839  0.678  0.027  1.0
  Li  Li1  1  0.161  0.322  0.973  1.0
  Li  Li2  1  0.839  0.678  0.473  1.0
  Li  Li3  1  0.161  0.322  0.527  1.0
  Li  Li4  1  0.098  0.197  0.153  1.0
  Li  Li5  1  0.902  0.803  0.847  1.0
  Li  Li6  1  0.098  0.197  0.347  1.0
  Li  Li7  1  0.902  0.803  0.653  1.0
  Li  Li8  1  0.736  0.471  0.948  1.0
  Li  Li9  1  0.264  0.529  0.052  1.0
  Li  Li10  1  0.736  0.471  0.552  1.0
  Li  Li11  1  0.264  0.529  0.448  1.0
  Eu  Eu12  1  0.200  0.401  0.250  1.0
  Eu  Eu13  1  0.800  0.599  0.750  1.0
  Eu  Eu14  1  0.491  0.983  0.250  1.0
  Eu  Eu15  1  0.509  0.017  0.750  1.0
  Eu  Eu16  1  0.568  0.135  0.995  1.0
  Eu  Eu17  1  0.432  0.865  0.005  1.0
  Eu  Eu18  1  0.568  0.135  0.505  1.0
  Eu  Eu19  1  0.432  0.865  0.495  1.0
  Eu  Eu20  1  0.343  0.686  0.250  1.0
  Eu  Eu21  1  0.657  0.314  0.750  1.0
  Sn  Sn22  1  0.767  0.534  0.153  1.0
  Sn  Sn23  1  0.233  0.466  0.847  1.0
  Sn  Sn24  1  0.767  0.534  0.347  1.0
  Sn  Sn25  1  0.233  0.466  0.653  1.0
  Sn  Sn26  1  0.671  0.342  0.094  1.0
  Sn  Sn27  1  0.329  0.658  0.906  1.0
  Sn  Sn28  1  0.671  0.342  0.406  1.0
  Sn  Sn29  1  0.329  0.658  0.594  1.0
  Sn  Sn30  1  0.611  0.222  0.250  1.0
  Sn  Sn31  1  0.389  0.778  0.750  1.0
  Sn  Sn32  1  0.912  0.824  0.153  1.0
  Sn  Sn33  1  0.088  0.176  0.847  1.0
  Sn  Sn34  1  0.912  0.824  0.347  1.0
  Sn  Sn35  1  0.088  0.176  0.653  1.0
  Sn  Sn36  1  0.008  0.016  0.095  1.0
  Sn  Sn37  1  0.992  0.984  0.905  1.0
  Sn  Sn38  1  0.008  0.016  0.405  1.0
  Sn  Sn39  1  0.992  0.984  0.595  1.0
[/CIF]
.