The compound described by Yb5Cu11Sn8 crystallizes in the orthorhombic Pmmn space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 16-coordinate geometry to two equivalent Cu(1), two equivalent Cu(3), two equivalent Cu(6), four equivalent Cu(4), one Sn(4), one Sn(5), and four equivalent Sn(2) atoms. In the second Yb site, Yb(2) is bonded in a 16-coordinate geometry to one Cu(1), one Cu(6), three equivalent Cu(2), three equivalent Cu(5), two equivalent Sn(2), three equivalent Sn(1), and three equivalent Sn(3) atoms. In the third Yb site, Yb(3) is bonded in a 14-coordinate geometry to one Cu(2), one Cu(3), one Cu(4), two equivalent Cu(1), two equivalent Cu(6), one Sn(3), two equivalent Sn(1), two equivalent Sn(4), and two equivalent Sn(5) atoms. There are six inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to one Yb(1), one Yb(2), two equivalent Yb(3), one Sn(1), one Sn(5), and two equivalent Sn(2) atoms. In the second Cu site, Cu(2) is bonded in a 8-coordinate geometry to one Yb(3), three equivalent Yb(2), one Sn(2), and three equivalent Sn(1) atoms. In the third Cu site, Cu(3) is bonded in a distorted body-centered cubic geometry to two equivalent Yb(1), two equivalent Yb(3), two equivalent Sn(2), and two equivalent Sn(5) atoms. In the fourth Cu site, Cu(4) is bonded in a 10-coordinate geometry to one Yb(3), two equivalent Yb(1), one Cu(4), two equivalent Cu(6), one Sn(2), one Sn(3), and two equivalent Sn(4) atoms. In the fifth Cu site, Cu(5) is bonded in a 8-coordinate geometry to three equivalent Yb(2), one Cu(6), one Sn(1), and three equivalent Sn(3) atoms. In the sixth Cu site, Cu(6) is bonded in a 10-coordinate geometry to one Yb(1), one Yb(2), two equivalent Yb(3), one Cu(5), two equivalent Cu(4), one Sn(4), and two equivalent Sn(3) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Yb(3), three equivalent Yb(2), one Cu(1), one Cu(5), and three equivalent Cu(2) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to two equivalent Yb(1), two equivalent Yb(2), one Cu(2), one Cu(3), one Cu(4), two equivalent Cu(1), and one Sn(3) atom. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to one Yb(3), three equivalent Yb(2), one Cu(4), two equivalent Cu(6), three equivalent Cu(5), and one Sn(2) atom. In the fourth Sn site, Sn(4) is bonded to one Yb(1), four equivalent Yb(3), two equivalent Cu(6), four equivalent Cu(4), and one Sn(5) atom to form distorted face-sharing SnYb5Cu6Sn cuboctahedra. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to one Yb(1), four equivalent Yb(3), two equivalent Cu(1), two equivalent Cu(3), and one Sn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb5Cu11Sn8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.430
_cell_length_b   9.285
_cell_length_c   22.808
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   938.006
_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
  Yb  Yb0  1  0.500  0.764  0.500  1.0
  Yb  Yb1  1  0.000  0.259  0.789  1.0
  Yb  Yb2  1  0.500  0.741  0.711  1.0
  Yb  Yb3  1  0.500  0.708  0.905  1.0
  Yb  Yb4  1  0.000  0.292  0.595  1.0
  Yb  Yb5  1  0.000  0.259  0.211  1.0
  Yb  Yb6  1  0.000  0.292  0.405  1.0
  Yb  Yb7  1  0.500  0.708  0.095  1.0
  Yb  Yb8  1  0.000  0.236  0.000  1.0
  Yb  Yb9  1  0.500  0.741  0.289  1.0
  Cu  Cu10  1  0.500  0.535  0.394  1.0
  Cu  Cu11  1  0.500  0.487  0.808  1.0
  Cu  Cu12  1  0.000  0.465  0.894  1.0
  Cu  Cu13  1  0.500  0.454  0.000  1.0
  Cu  Cu14  1  0.000  0.975  0.446  1.0
  Cu  Cu15  1  0.500  0.025  0.054  1.0
  Cu  Cu16  1  0.500  0.081  0.719  1.0
  Cu  Cu17  1  0.500  0.026  0.610  1.0
  Cu  Cu18  1  0.000  0.974  0.890  1.0
  Cu  Cu19  1  0.000  0.513  0.308  1.0
  Cu  Cu20  1  0.000  0.513  0.692  1.0
  Cu  Cu21  1  0.000  0.919  0.219  1.0
  Cu  Cu22  1  0.000  0.919  0.781  1.0
  Cu  Cu23  1  0.500  0.025  0.946  1.0
  Cu  Cu24  1  0.000  0.546  0.500  1.0
  Cu  Cu25  1  0.500  0.535  0.606  1.0
  Cu  Cu26  1  0.500  0.026  0.390  1.0
  Cu  Cu27  1  0.500  0.487  0.192  1.0
  Cu  Cu28  1  0.500  0.081  0.281  1.0
  Cu  Cu29  1  0.000  0.465  0.106  1.0
  Cu  Cu30  1  0.000  0.975  0.554  1.0
  Cu  Cu31  1  0.000  0.974  0.110  1.0
  Sn  Sn32  1  0.500  0.362  0.698  1.0
  Sn  Sn33  1  0.000  0.638  0.802  1.0
  Sn  Sn34  1  0.500  0.302  0.102  1.0
  Sn  Sn35  1  0.500  0.016  0.170  1.0
  Sn  Sn36  1  0.500  0.097  0.500  1.0
  Sn  Sn37  1  0.000  0.638  0.198  1.0
  Sn  Sn38  1  0.000  0.984  0.330  1.0
  Sn  Sn39  1  0.000  0.698  0.602  1.0
  Sn  Sn40  1  0.000  0.984  0.670  1.0
  Sn  Sn41  1  0.000  0.593  0.000  1.0
  Sn  Sn42  1  0.000  0.698  0.398  1.0
  Sn  Sn43  1  0.000  0.903  0.000  1.0
  Sn  Sn44  1  0.500  0.302  0.898  1.0
  Sn  Sn45  1  0.500  0.016  0.830  1.0
  Sn  Sn46  1  0.500  0.407  0.500  1.0
  Sn  Sn47  1  0.500  0.362  0.302  1.0
[/CIF]
.
The compound described by Yb5Cu11Sn8 crystallizes in the orthorhombic Pmmn space group. There are three inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 16-coordinate geometry to two equivalent Cu(1), two equivalent Cu(3), two equivalent Cu(6), four equivalent Cu(4), one Sn(4), one Sn(5), and four equivalent Sn(2) atoms. In the second Yb site, Yb(2) is bonded in a 16-coordinate geometry to one Cu(1), one Cu(6), three equivalent Cu(2), three equivalent Cu(5), two equivalent Sn(2), three equivalent Sn(1), and three equivalent Sn(3) atoms. In the third Yb site, Yb(3) is bonded in a 14-coordinate geometry to one Cu(2), one Cu(3), one Cu(4), two equivalent Cu(1), two equivalent Cu(6), one Sn(3), two equivalent Sn(1), two equivalent Sn(4), and two equivalent Sn(5) atoms. There are six inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 8-coordinate geometry to one Yb(1), one Yb(2), two equivalent Yb(3), one Sn(1), one Sn(5), and two equivalent Sn(2) atoms. In the second Cu site, Cu(2) is bonded in a 8-coordinate geometry to one Yb(3), three equivalent Yb(2), one Sn(2), and three equivalent Sn(1) atoms. In the third Cu site, Cu(3) is bonded in a distorted body-centered cubic geometry to two equivalent Yb(1), two equivalent Yb(3), two equivalent Sn(2), and two equivalent Sn(5) atoms. In the fourth Cu site, Cu(4) is bonded in a 10-coordinate geometry to one Yb(3), two equivalent Yb(1), one Cu(4), two equivalent Cu(6), one Sn(2), one Sn(3), and two equivalent Sn(4) atoms. In the fifth Cu site, Cu(5) is bonded in a 8-coordinate geometry to three equivalent Yb(2), one Cu(6), one Sn(1), and three equivalent Sn(3) atoms. In the sixth Cu site, Cu(6) is bonded in a 10-coordinate geometry to one Yb(1), one Yb(2), two equivalent Yb(3), one Cu(5), two equivalent Cu(4), one Sn(4), and two equivalent Sn(3) atoms. There are five inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 9-coordinate geometry to two equivalent Yb(3), three equivalent Yb(2), one Cu(1), one Cu(5), and three equivalent Cu(2) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to two equivalent Yb(1), two equivalent Yb(2), one Cu(2), one Cu(3), one Cu(4), two equivalent Cu(1), and one Sn(3) atom. In the third Sn site, Sn(3) is bonded in a 9-coordinate geometry to one Yb(3), three equivalent Yb(2), one Cu(4), two equivalent Cu(6), three equivalent Cu(5), and one Sn(2) atom. In the fourth Sn site, Sn(4) is bonded to one Yb(1), four equivalent Yb(3), two equivalent Cu(6), four equivalent Cu(4), and one Sn(5) atom to form distorted face-sharing SnYb5Cu6Sn cuboctahedra. In the fifth Sn site, Sn(5) is bonded in a 10-coordinate geometry to one Yb(1), four equivalent Yb(3), two equivalent Cu(1), two equivalent Cu(3), and one Sn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb5Cu11Sn8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.430
_cell_length_b   9.285
_cell_length_c   22.808
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   938.006
_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
  Yb  Yb0  1  0.500  0.764  0.500  1.0
  Yb  Yb1  1  0.000  0.259  0.789  1.0
  Yb  Yb2  1  0.500  0.741  0.711  1.0
  Yb  Yb3  1  0.500  0.708  0.905  1.0
  Yb  Yb4  1  0.000  0.292  0.595  1.0
  Yb  Yb5  1  0.000  0.259  0.211  1.0
  Yb  Yb6  1  0.000  0.292  0.405  1.0
  Yb  Yb7  1  0.500  0.708  0.095  1.0
  Yb  Yb8  1  0.000  0.236  0.000  1.0
  Yb  Yb9  1  0.500  0.741  0.289  1.0
  Cu  Cu10  1  0.500  0.535  0.394  1.0
  Cu  Cu11  1  0.500  0.487  0.808  1.0
  Cu  Cu12  1  0.000  0.465  0.894  1.0
  Cu  Cu13  1  0.500  0.454  0.000  1.0
  Cu  Cu14  1  0.000  0.975  0.446  1.0
  Cu  Cu15  1  0.500  0.025  0.054  1.0
  Cu  Cu16  1  0.500  0.081  0.719  1.0
  Cu  Cu17  1  0.500  0.026  0.610  1.0
  Cu  Cu18  1  0.000  0.974  0.890  1.0
  Cu  Cu19  1  0.000  0.513  0.308  1.0
  Cu  Cu20  1  0.000  0.513  0.692  1.0
  Cu  Cu21  1  0.000  0.919  0.219  1.0
  Cu  Cu22  1  0.000  0.919  0.781  1.0
  Cu  Cu23  1  0.500  0.025  0.946  1.0
  Cu  Cu24  1  0.000  0.546  0.500  1.0
  Cu  Cu25  1  0.500  0.535  0.606  1.0
  Cu  Cu26  1  0.500  0.026  0.390  1.0
  Cu  Cu27  1  0.500  0.487  0.192  1.0
  Cu  Cu28  1  0.500  0.081  0.281  1.0
  Cu  Cu29  1  0.000  0.465  0.106  1.0
  Cu  Cu30  1  0.000  0.975  0.554  1.0
  Cu  Cu31  1  0.000  0.974  0.110  1.0
  Sn  Sn32  1  0.500  0.362  0.698  1.0
  Sn  Sn33  1  0.000  0.638  0.802  1.0
  Sn  Sn34  1  0.500  0.302  0.102  1.0
  Sn  Sn35  1  0.500  0.016  0.170  1.0
  Sn  Sn36  1  0.500  0.097  0.500  1.0
  Sn  Sn37  1  0.000  0.638  0.198  1.0
  Sn  Sn38  1  0.000  0.984  0.330  1.0
  Sn  Sn39  1  0.000  0.698  0.602  1.0
  Sn  Sn40  1  0.000  0.984  0.670  1.0
  Sn  Sn41  1  0.000  0.593  0.000  1.0
  Sn  Sn42  1  0.000  0.698  0.398  1.0
  Sn  Sn43  1  0.000  0.903  0.000  1.0
  Sn  Sn44  1  0.500  0.302  0.898  1.0
  Sn  Sn45  1  0.500  0.016  0.830  1.0
  Sn  Sn46  1  0.500  0.407  0.500  1.0
  Sn  Sn47  1  0.500  0.362  0.302  1.0
[/CIF]
.