The material structure described by Yb11Ge10 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 5-coordinate geometry to one Ge(2), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(4) atoms. In the second Yb site, Yb(2) is bonded in a 7-coordinate geometry to one Ge(5), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the third Yb site, Yb(3) is bonded in a 7-coordinate geometry to one Ge(1), one Ge(4), one Ge(5), and four equivalent Ge(3) atoms. In the fourth Yb site, Yb(4) is bonded in a 8-coordinate geometry to four equivalent Ge(2) and four equivalent Ge(3) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Yb(1), two equivalent Yb(3), four equivalent Yb(2), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Yb(1), two equivalent Yb(4), four equivalent Yb(2), and two equivalent Ge(2) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Yb(1), one Yb(4), two equivalent Yb(2), four equivalent Yb(3), and one Ge(3) atom. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to four equivalent Yb(1), four equivalent Yb(3), and one Ge(4) atom. In the fifth Ge site, Ge(5) is bonded in a 8-coordinate geometry to four equivalent Yb(2) and four equivalent Yb(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb11Ge10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.567
_cell_length_b   11.567
_cell_length_c   11.567
_cell_angle_alpha   123.672
_cell_angle_beta   123.672
_cell_angle_gamma   83.750
_symmetry_Int_Tables_number   1
_cell_volume   1026.984
_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  0.680  0.320  0.000  1.0
  Yb  Yb1  1  0.105  0.423  0.318  1.0
  Yb  Yb2  1  0.895  0.213  0.318  1.0
  Yb  Yb3  1  0.073  0.322  0.751  1.0
  Yb  Yb4  1  0.320  0.680  0.000  1.0
  Yb  Yb5  1  0.157  0.157  0.000  1.0
  Yb  Yb6  1  0.678  0.429  0.751  1.0
  Yb  Yb7  1  0.320  0.320  0.640  1.0
  Yb  Yb8  1  0.895  0.577  0.682  1.0
  Yb  Yb9  1  0.843  0.843  0.000  1.0
  Yb  Yb10  1  0.927  0.678  0.249  1.0
  Yb  Yb11  1  0.105  0.787  0.682  1.0
  Yb  Yb12  1  0.429  0.678  0.751  1.0
  Yb  Yb13  1  0.213  0.895  0.318  1.0
  Yb  Yb14  1  0.322  0.571  0.249  1.0
  Yb  Yb15  1  0.577  0.895  0.682  1.0
  Yb  Yb16  1  0.680  0.680  0.360  1.0
  Yb  Yb17  1  0.571  0.322  0.249  1.0
  Yb  Yb18  1  0.678  0.927  0.249  1.0
  Yb  Yb19  1  0.423  0.105  0.318  1.0
  Yb  Yb20  1  0.787  0.105  0.682  1.0
  Yb  Yb21  1  0.322  0.073  0.751  1.0
  Ge  Ge22  1  0.119  0.500  0.619  1.0
  Ge  Ge23  1  0.118  0.882  0.000  1.0
  Ge  Ge24  1  0.882  0.118  0.000  1.0
  Ge  Ge25  1  0.017  0.604  0.000  1.0
  Ge  Ge26  1  0.983  0.983  0.587  1.0
  Ge  Ge27  1  0.604  0.017  0.000  1.0
  Ge  Ge28  1  0.118  0.118  0.235  1.0
  Ge  Ge29  1  0.415  0.415  0.000  1.0
  Ge  Ge30  1  0.396  0.983  0.000  1.0
  Ge  Ge31  1  0.882  0.882  0.765  1.0
  Ge  Ge32  1  0.881  0.500  0.381  1.0
  Ge  Ge33  1  0.396  0.396  0.413  1.0
  Ge  Ge34  1  0.983  0.396  0.000  1.0
  Ge  Ge35  1  0.017  0.017  0.413  1.0
  Ge  Ge36  1  0.500  0.119  0.619  1.0
  Ge  Ge37  1  0.585  0.585  0.000  1.0
  Ge  Ge38  1  0.250  0.750  0.500  1.0
  Ge  Ge39  1  0.604  0.604  0.587  1.0
  Ge  Ge40  1  0.750  0.250  0.500  1.0
  Ge  Ge41  1  0.500  0.881  0.381  1.0
[/CIF]
.
The material structure described by Yb11Ge10 crystallizes in the tetragonal I4/mmm space group. There are four inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 5-coordinate geometry to one Ge(2), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(4) atoms. In the second Yb site, Yb(2) is bonded in a 7-coordinate geometry to one Ge(5), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the third Yb site, Yb(3) is bonded in a 7-coordinate geometry to one Ge(1), one Ge(4), one Ge(5), and four equivalent Ge(3) atoms. In the fourth Yb site, Yb(4) is bonded in a 8-coordinate geometry to four equivalent Ge(2) and four equivalent Ge(3) atoms. There are five inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Yb(1), two equivalent Yb(3), four equivalent Yb(2), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Yb(1), two equivalent Yb(4), four equivalent Yb(2), and two equivalent Ge(2) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Yb(1), one Yb(4), two equivalent Yb(2), four equivalent Yb(3), and one Ge(3) atom. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to four equivalent Yb(1), four equivalent Yb(3), and one Ge(4) atom. In the fifth Ge site, Ge(5) is bonded in a 8-coordinate geometry to four equivalent Yb(2) and four equivalent Yb(3) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb11Ge10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.567
_cell_length_b   11.567
_cell_length_c   11.567
_cell_angle_alpha   123.672
_cell_angle_beta   123.672
_cell_angle_gamma   83.750
_symmetry_Int_Tables_number   1
_cell_volume   1026.984
_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  0.680  0.320  0.000  1.0
  Yb  Yb1  1  0.105  0.423  0.318  1.0
  Yb  Yb2  1  0.895  0.213  0.318  1.0
  Yb  Yb3  1  0.073  0.322  0.751  1.0
  Yb  Yb4  1  0.320  0.680  0.000  1.0
  Yb  Yb5  1  0.157  0.157  0.000  1.0
  Yb  Yb6  1  0.678  0.429  0.751  1.0
  Yb  Yb7  1  0.320  0.320  0.640  1.0
  Yb  Yb8  1  0.895  0.577  0.682  1.0
  Yb  Yb9  1  0.843  0.843  0.000  1.0
  Yb  Yb10  1  0.927  0.678  0.249  1.0
  Yb  Yb11  1  0.105  0.787  0.682  1.0
  Yb  Yb12  1  0.429  0.678  0.751  1.0
  Yb  Yb13  1  0.213  0.895  0.318  1.0
  Yb  Yb14  1  0.322  0.571  0.249  1.0
  Yb  Yb15  1  0.577  0.895  0.682  1.0
  Yb  Yb16  1  0.680  0.680  0.360  1.0
  Yb  Yb17  1  0.571  0.322  0.249  1.0
  Yb  Yb18  1  0.678  0.927  0.249  1.0
  Yb  Yb19  1  0.423  0.105  0.318  1.0
  Yb  Yb20  1  0.787  0.105  0.682  1.0
  Yb  Yb21  1  0.322  0.073  0.751  1.0
  Ge  Ge22  1  0.119  0.500  0.619  1.0
  Ge  Ge23  1  0.118  0.882  0.000  1.0
  Ge  Ge24  1  0.882  0.118  0.000  1.0
  Ge  Ge25  1  0.017  0.604  0.000  1.0
  Ge  Ge26  1  0.983  0.983  0.587  1.0
  Ge  Ge27  1  0.604  0.017  0.000  1.0
  Ge  Ge28  1  0.118  0.118  0.235  1.0
  Ge  Ge29  1  0.415  0.415  0.000  1.0
  Ge  Ge30  1  0.396  0.983  0.000  1.0
  Ge  Ge31  1  0.882  0.882  0.765  1.0
  Ge  Ge32  1  0.881  0.500  0.381  1.0
  Ge  Ge33  1  0.396  0.396  0.413  1.0
  Ge  Ge34  1  0.983  0.396  0.000  1.0
  Ge  Ge35  1  0.017  0.017  0.413  1.0
  Ge  Ge36  1  0.500  0.119  0.619  1.0
  Ge  Ge37  1  0.585  0.585  0.000  1.0
  Ge  Ge38  1  0.250  0.750  0.500  1.0
  Ge  Ge39  1  0.604  0.604  0.587  1.0
  Ge  Ge40  1  0.750  0.250  0.500  1.0
  Ge  Ge41  1  0.500  0.881  0.381  1.0
[/CIF]
.