The structure described by Yb2Zn17 crystallizes in the trigonal R-3m space group. Yb(1) is bonded in a 19-coordinate geometry to one Zn(3), three equivalent Zn(4), six equivalent Zn(1), and nine equivalent Zn(2) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 12-coordinate geometry to two equivalent Yb(1), two equivalent Zn(1), two equivalent Zn(3), two equivalent Zn(4), and four equivalent Zn(2) atoms. In the second Zn site, Zn(2) is bonded to three equivalent Yb(1), one Zn(3), two equivalent Zn(2), two equivalent Zn(4), and four equivalent Zn(1) atoms to form distorted ZnYb3Zn9 cuboctahedra that share corners with five equivalent Zn(4)Yb2Zn10 cuboctahedra, corners with ten equivalent Zn(2)Yb3Zn9 cuboctahedra, edges with three equivalent Zn(4)Yb2Zn10 cuboctahedra, edges with five equivalent Zn(2)Yb3Zn9 cuboctahedra, faces with three equivalent Zn(4)Yb2Zn10 cuboctahedra, and faces with seven equivalent Zn(2)Yb3Zn9 cuboctahedra. In the third Zn site, Zn(3) is bonded in a 14-coordinate geometry to one Yb(1), one Zn(3), three equivalent Zn(2), three equivalent Zn(4), and six equivalent Zn(1) atoms. In the fourth Zn site, Zn(4) is bonded to two equivalent Yb(1), two equivalent Zn(3), four equivalent Zn(1), and four equivalent Zn(2) atoms to form ZnYb2Zn10 cuboctahedra that share corners with four equivalent Zn(4)Yb2Zn10 cuboctahedra, corners with ten equivalent Zn(2)Yb3Zn9 cuboctahedra, edges with six equivalent Zn(2)Yb3Zn9 cuboctahedra, faces with four equivalent Zn(4)Yb2Zn10 cuboctahedra, and faces with six equivalent Zn(2)Yb3Zn9 cuboctahedra. is represented by the CIF file [CIF]
data_Yb2Zn17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.706
_cell_length_b   6.706
_cell_length_c   6.706
_cell_angle_alpha   82.716
_cell_angle_beta   82.716
_cell_angle_gamma   82.716
_symmetry_Int_Tables_number   1
_cell_volume   294.845
_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
  Yb  Yb0  1  0.337  0.337  0.337  1.0
  Yb  Yb1  1  0.663  0.663  0.663  1.0
  Zn  Zn2  1  0.701  0.000  0.299  1.0
  Zn  Zn3  1  0.000  0.299  0.701  1.0
  Zn  Zn4  1  0.351  0.351  0.840  1.0
  Zn  Zn5  1  0.100  0.100  0.100  1.0
  Zn  Zn6  1  0.649  0.649  0.160  1.0
  Zn  Zn7  1  0.000  0.701  0.299  1.0
  Zn  Zn8  1  0.351  0.840  0.351  1.0
  Zn  Zn9  1  0.160  0.649  0.649  1.0
  Zn  Zn10  1  0.000  0.000  0.500  1.0
  Zn  Zn11  1  0.840  0.351  0.351  1.0
  Zn  Zn12  1  0.900  0.900  0.900  1.0
  Zn  Zn13  1  0.299  0.701  0.000  1.0
  Zn  Zn14  1  0.649  0.160  0.649  1.0
  Zn  Zn15  1  0.299  0.000  0.701  1.0
  Zn  Zn16  1  0.000  0.500  0.000  1.0
  Zn  Zn17  1  0.500  0.000  0.000  1.0
  Zn  Zn18  1  0.701  0.299  0.000  1.0
[/CIF]
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The structure described by Yb2Zn17 crystallizes in the trigonal R-3m space group. Yb(1) is bonded in a 19-coordinate geometry to one Zn(3), three equivalent Zn(4), six equivalent Zn(1), and nine equivalent Zn(2) atoms. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 12-coordinate geometry to two equivalent Yb(1), two equivalent Zn(1), two equivalent Zn(3), two equivalent Zn(4), and four equivalent Zn(2) atoms. In the second Zn site, Zn(2) is bonded to three equivalent Yb(1), one Zn(3), two equivalent Zn(2), two equivalent Zn(4), and four equivalent Zn(1) atoms to form distorted ZnYb3Zn9 cuboctahedra that share corners with five equivalent Zn(4)Yb2Zn10 cuboctahedra, corners with ten equivalent Zn(2)Yb3Zn9 cuboctahedra, edges with three equivalent Zn(4)Yb2Zn10 cuboctahedra, edges with five equivalent Zn(2)Yb3Zn9 cuboctahedra, faces with three equivalent Zn(4)Yb2Zn10 cuboctahedra, and faces with seven equivalent Zn(2)Yb3Zn9 cuboctahedra. In the third Zn site, Zn(3) is bonded in a 14-coordinate geometry to one Yb(1), one Zn(3), three equivalent Zn(2), three equivalent Zn(4), and six equivalent Zn(1) atoms. In the fourth Zn site, Zn(4) is bonded to two equivalent Yb(1), two equivalent Zn(3), four equivalent Zn(1), and four equivalent Zn(2) atoms to form ZnYb2Zn10 cuboctahedra that share corners with four equivalent Zn(4)Yb2Zn10 cuboctahedra, corners with ten equivalent Zn(2)Yb3Zn9 cuboctahedra, edges with six equivalent Zn(2)Yb3Zn9 cuboctahedra, faces with four equivalent Zn(4)Yb2Zn10 cuboctahedra, and faces with six equivalent Zn(2)Yb3Zn9 cuboctahedra. is represented by the CIF file [CIF]
data_Yb2Zn17
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.706
_cell_length_b   6.706
_cell_length_c   6.706
_cell_angle_alpha   82.716
_cell_angle_beta   82.716
_cell_angle_gamma   82.716
_symmetry_Int_Tables_number   1
_cell_volume   294.845
_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
  Yb  Yb0  1  0.337  0.337  0.337  1.0
  Yb  Yb1  1  0.663  0.663  0.663  1.0
  Zn  Zn2  1  0.701  0.000  0.299  1.0
  Zn  Zn3  1  0.000  0.299  0.701  1.0
  Zn  Zn4  1  0.351  0.351  0.840  1.0
  Zn  Zn5  1  0.100  0.100  0.100  1.0
  Zn  Zn6  1  0.649  0.649  0.160  1.0
  Zn  Zn7  1  0.000  0.701  0.299  1.0
  Zn  Zn8  1  0.351  0.840  0.351  1.0
  Zn  Zn9  1  0.160  0.649  0.649  1.0
  Zn  Zn10  1  0.000  0.000  0.500  1.0
  Zn  Zn11  1  0.840  0.351  0.351  1.0
  Zn  Zn12  1  0.900  0.900  0.900  1.0
  Zn  Zn13  1  0.299  0.701  0.000  1.0
  Zn  Zn14  1  0.649  0.160  0.649  1.0
  Zn  Zn15  1  0.299  0.000  0.701  1.0
  Zn  Zn16  1  0.000  0.500  0.000  1.0
  Zn  Zn17  1  0.500  0.000  0.000  1.0
  Zn  Zn18  1  0.701  0.299  0.000  1.0
[/CIF]
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