The structure described by Y3Fe29 crystallizes in the monoclinic C2/m space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 20-coordinate geometry to two equivalent Fe(2), two equivalent Fe(6), two equivalent Fe(7), two equivalent Fe(9), four equivalent Fe(11), four equivalent Fe(4), and four equivalent Fe(8) atoms. In the second Y site, Y(2) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(3), one Fe(7), two equivalent Fe(4), two equivalent Fe(8), two equivalent Fe(9), four equivalent Fe(5), and six equivalent Fe(10) atoms. There are eleven inequivalent Fe sites. In the first Fe site, Fe(11) is bonded to two equivalent Y(1), two equivalent Fe(2), two equivalent Fe(4), two equivalent Fe(6), two equivalent Fe(7), and two equivalent Fe(8) atoms to form FeY2Fe10 cuboctahedra that share corners with two equivalent Fe(11)Y2Fe10 cuboctahedra, corners with four equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(7)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with four equivalent Fe(10)Y3Fe9 cuboctahedra, edges with two equivalent Fe(11)Y2Fe10 cuboctahedra, edges with two equivalent Fe(4)Y2Fe10 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra, edges with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(7)Y2Fe10 cuboctahedra, faces with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with four equivalent Fe(4)Y2Fe10 cuboctahedra, and faces with four equivalent Fe(8)Y2Fe10 cuboctahedra. In the second Fe site, Fe(1) is bonded to two equivalent Y(2), two equivalent Fe(3), four equivalent Fe(10), and four equivalent Fe(5) atoms to form FeY2Fe10 cuboctahedra that share corners with four equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with four equivalent Fe(10)Y3Fe9 cuboctahedra, corners with six equivalent Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(7)Y2Fe10 cuboctahedra, edges with four equivalent Fe(10)Y3Fe9 cuboctahedra, faces with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with four equivalent Fe(4)Y2Fe10 cuboctahedra, faces with four equivalent Fe(8)Y2Fe10 cuboctahedra, and faces with four equivalent Fe(10)Y3Fe9 cuboctahedra. In the third Fe site, Fe(2) is bonded in a 14-coordinate geometry to one Y(1), one Fe(3), one Fe(7), one Fe(9), two equivalent Fe(11), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(6), and two equivalent Fe(8) atoms. In the fourth Fe site, Fe(3) is bonded in a 14-coordinate geometry to one Y(2), one Fe(1), one Fe(2), one Fe(7), two equivalent Fe(10), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(6), and two equivalent Fe(8) atoms. In the fifth Fe site, Fe(4) is bonded to one Y(1), one Y(2), one Fe(10), one Fe(11), one Fe(2), one Fe(3), one Fe(5), one Fe(6), one Fe(7), one Fe(9), and two equivalent Fe(8) atoms to form distorted FeY2Fe10 cuboctahedra that share  a cornercorner with one Fe(1)Y2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Y2Fe10 cuboctahedra, corners with two equivalent Fe(11)Y2Fe10 cuboctahedra, corners with two equivalent Fe(9)Y3Fe9 cuboctahedra, corners with three equivalent Fe(8)Y2Fe10 cuboctahedra, corners with three equivalent Fe(10)Y3Fe9 cuboctahedra, corners with four equivalent Fe(4)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(10)Y3Fe9 cuboctahedra, edges with two equivalent Fe(4)Y2Fe10 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra,  a faceface with one Fe(1)Y2Fe10 cuboctahedra,  a faceface with one Fe(4)Y2Fe10 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with three equivalent Fe(7)Y2Fe10 cuboctahedra, faces with three equivalent Fe(8)Y2Fe10 cuboctahedra, and faces with three equivalent Fe(10)Y3Fe9 cuboctahedra. In the sixth Fe site, Fe(5) is bonded in a 12-coordinate geometry to two equivalent Y(2), one Fe(1), one Fe(2), one Fe(3), one Fe(4), one Fe(5), one Fe(8), one Fe(9), and three equivalent Fe(10) atoms. In the seventh Fe site, Fe(6) is bonded in a 14-coordinate geometry to one Y(1), one Fe(6), two equivalent Fe(11), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(4), two equivalent Fe(7), and two equivalent Fe(8) atoms. In the eighth Fe site, Fe(7) is bonded to one Y(1), one Y(2), one Fe(2), one Fe(3), two equivalent Fe(11), two equivalent Fe(4), two equivalent Fe(6), and two equivalent Fe(8) atoms to form distorted FeY2Fe10 cuboctahedra that share corners with two equivalent Fe(4)Y2Fe10 cuboctahedra, corners with two equivalent Fe(8)Y2Fe10 cuboctahedra, corners with two equivalent Fe(10)Y3Fe9 cuboctahedra, corners with three equivalent Fe(7)Y2Fe10 cuboctahedra, corners with three equivalent Fe(9)Y3Fe9 cuboctahedra, corners with four equivalent Fe(11)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra, edges with two equivalent Fe(10)Y3Fe9 cuboctahedra,  a faceface with one Fe(9)Y3Fe9 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(10)Y3Fe9 cuboctahedra, faces with four equivalent Fe(8)Y2Fe10 cuboctahedra, and faces with six equivalent Fe(4)Y2Fe10 cuboctahedra. In the ninth Fe site, Fe(8) is bonded to one Y(1), one Y(2), one Fe(10), one Fe(11), one Fe(2), one Fe(3), one Fe(5), one Fe(6), one Fe(7), one Fe(9), and two equivalent Fe(4) atoms to form FeY2Fe10 cuboctahedra that share  a cornercorner with one Fe(1)Y2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Y2Fe10 cuboctahedra, corners with two equivalent Fe(11)Y2Fe10 cuboctahedra, corners with two equivalent Fe(9)Y3Fe9 cuboctahedra, corners with three equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with four equivalent Fe(10)Y3Fe9 cuboctahedra,  an edgeedge with one Fe(11)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(8)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(4)Y2Fe10 cuboctahedra, edges with two equivalent Fe(10)Y3Fe9 cuboctahedra,  a faceface with one Fe(1)Y2Fe10 cuboctahedra,  a faceface with one Fe(9)Y3Fe9 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(7)Y2Fe10 cuboctahedra, faces with two equivalent Fe(8)Y2Fe10 cuboctahedra, faces with two equivalent Fe(10)Y3Fe9 cuboctahedra, and faces with three equivalent Fe(4)Y2Fe10 cuboctahedra. In the tenth Fe site, Fe(9) is bonded to one Y(1), two equivalent Y(2), one Fe(2), two equivalent Fe(10), two equivalent Fe(4), two equivalent Fe(5), and two equivalent Fe(8) atoms to form FeY3Fe9 cuboctahedra that share  a cornercorner with one Fe(9)Y3Fe9 cuboctahedra, corners with three equivalent Fe(1)Y2Fe10 cuboctahedra, corners with three equivalent Fe(7)Y2Fe10 cuboctahedra, corners with four equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with four equivalent Fe(10)Y3Fe9 cuboctahedra,  an edgeedge with one Fe(7)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(11)Y2Fe10 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra, edges with two equivalent Fe(10)Y3Fe9 cuboctahedra,  a faceface with one Fe(1)Y2Fe10 cuboctahedra,  a faceface with one Fe(7)Y2Fe10 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(8)Y2Fe10 cuboctahedra, faces with four equivalent Fe(4)Y2Fe10 cuboctahedra, and faces with four equivalent Fe(10)Y3Fe9 cuboctahedra. In the eleventh Fe site, Fe(10) is bonded to three equivalent Y(2), one Fe(1), one Fe(10), one Fe(3), one Fe(4), one Fe(8), one Fe(9), and three equivalent Fe(5) atoms to form FeY3Fe9 cuboctahedra that share  a cornercorner with one Fe(1)Y2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Y2Fe10 cuboctahedra, corners with two equivalent Fe(11)Y2Fe10 cuboctahedra, corners with two equivalent Fe(9)Y3Fe9 cuboctahedra, corners with three equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with five equivalent Fe(10)Y3Fe9 cuboctahedra,  an edgeedge with one Fe(1)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra, edges with three equivalent Fe(10)Y3Fe9 cuboctahedra,  a faceface with one Fe(1)Y2Fe10 cuboctahedra,  a faceface with one Fe(7)Y2Fe10 cuboctahedra, faces with two equivalent Fe(8)Y2Fe10 cuboctahedra, faces with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with three equivalent Fe(4)Y2Fe10 cuboctahedra, and faces with four equivalent Fe(10)Y3Fe9 cuboctahedra. is represented by the CIF card [CIF]
data_Y3Fe29
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.416
_cell_length_b   6.416
_cell_length_c   10.471
_cell_angle_alpha   85.138
_cell_angle_beta   85.138
_cell_angle_gamma   82.673
_symmetry_Int_Tables_number   1
_cell_volume   424.827
_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
  Y  Y0  1  0.000  0.000  0.000  1.0
  Y  Y1  1  0.188  0.188  0.402  1.0
  Y  Y2  1  0.812  0.812  0.598  1.0
  Fe  Fe3  1  0.500  0.500  0.500  1.0
  Fe  Fe4  1  0.290  0.290  0.859  1.0
  Fe  Fe5  1  0.710  0.710  0.141  1.0
  Fe  Fe6  1  0.520  0.520  0.746  1.0
  Fe  Fe7  1  0.480  0.480  0.254  1.0
  Fe  Fe8  1  0.127  0.689  0.802  1.0
  Fe  Fe9  1  0.311  0.873  0.198  1.0
  Fe  Fe10  1  0.873  0.311  0.198  1.0
  Fe  Fe11  1  0.689  0.127  0.802  1.0
  Fe  Fe12  1  0.165  0.461  0.622  1.0
  Fe  Fe13  1  0.539  0.835  0.378  1.0
  Fe  Fe14  1  0.835  0.539  0.378  1.0
  Fe  Fe15  1  0.461  0.165  0.622  1.0
  Fe  Fe16  1  0.642  0.358  0.000  1.0
  Fe  Fe17  1  0.358  0.642  0.000  1.0
  Fe  Fe18  1  0.278  0.278  0.108  1.0
  Fe  Fe19  1  0.722  0.722  0.892  1.0
  Fe  Fe20  1  0.407  0.902  0.802  1.0
  Fe  Fe21  1  0.098  0.593  0.198  1.0
  Fe  Fe22  1  0.593  0.098  0.198  1.0
  Fe  Fe23  1  0.902  0.407  0.802  1.0
  Fe  Fe24  1  0.908  0.908  0.292  1.0
  Fe  Fe25  1  0.092  0.092  0.708  1.0
  Fe  Fe26  1  0.314  0.813  0.595  1.0
  Fe  Fe27  1  0.187  0.686  0.405  1.0
  Fe  Fe28  1  0.686  0.187  0.405  1.0
  Fe  Fe29  1  0.813  0.314  0.595  1.0
  Fe  Fe30  1  0.500  0.000  0.000  1.0
  Fe  Fe31  1  0.000  0.500  0.000  1.0
[/CIF]
.
The structure described by Y3Fe29 crystallizes in the monoclinic C2/m space group. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a 20-coordinate geometry to two equivalent Fe(2), two equivalent Fe(6), two equivalent Fe(7), two equivalent Fe(9), four equivalent Fe(11), four equivalent Fe(4), and four equivalent Fe(8) atoms. In the second Y site, Y(2) is bonded in a 19-coordinate geometry to one Fe(1), one Fe(3), one Fe(7), two equivalent Fe(4), two equivalent Fe(8), two equivalent Fe(9), four equivalent Fe(5), and six equivalent Fe(10) atoms. There are eleven inequivalent Fe sites. In the first Fe site, Fe(11) is bonded to two equivalent Y(1), two equivalent Fe(2), two equivalent Fe(4), two equivalent Fe(6), two equivalent Fe(7), and two equivalent Fe(8) atoms to form FeY2Fe10 cuboctahedra that share corners with two equivalent Fe(11)Y2Fe10 cuboctahedra, corners with four equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(7)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with four equivalent Fe(10)Y3Fe9 cuboctahedra, edges with two equivalent Fe(11)Y2Fe10 cuboctahedra, edges with two equivalent Fe(4)Y2Fe10 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra, edges with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(7)Y2Fe10 cuboctahedra, faces with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with four equivalent Fe(4)Y2Fe10 cuboctahedra, and faces with four equivalent Fe(8)Y2Fe10 cuboctahedra. In the second Fe site, Fe(1) is bonded to two equivalent Y(2), two equivalent Fe(3), four equivalent Fe(10), and four equivalent Fe(5) atoms to form FeY2Fe10 cuboctahedra that share corners with four equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with four equivalent Fe(10)Y3Fe9 cuboctahedra, corners with six equivalent Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(7)Y2Fe10 cuboctahedra, edges with four equivalent Fe(10)Y3Fe9 cuboctahedra, faces with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with four equivalent Fe(4)Y2Fe10 cuboctahedra, faces with four equivalent Fe(8)Y2Fe10 cuboctahedra, and faces with four equivalent Fe(10)Y3Fe9 cuboctahedra. In the third Fe site, Fe(2) is bonded in a 14-coordinate geometry to one Y(1), one Fe(3), one Fe(7), one Fe(9), two equivalent Fe(11), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(6), and two equivalent Fe(8) atoms. In the fourth Fe site, Fe(3) is bonded in a 14-coordinate geometry to one Y(2), one Fe(1), one Fe(2), one Fe(7), two equivalent Fe(10), two equivalent Fe(4), two equivalent Fe(5), two equivalent Fe(6), and two equivalent Fe(8) atoms. In the fifth Fe site, Fe(4) is bonded to one Y(1), one Y(2), one Fe(10), one Fe(11), one Fe(2), one Fe(3), one Fe(5), one Fe(6), one Fe(7), one Fe(9), and two equivalent Fe(8) atoms to form distorted FeY2Fe10 cuboctahedra that share  a cornercorner with one Fe(1)Y2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Y2Fe10 cuboctahedra, corners with two equivalent Fe(11)Y2Fe10 cuboctahedra, corners with two equivalent Fe(9)Y3Fe9 cuboctahedra, corners with three equivalent Fe(8)Y2Fe10 cuboctahedra, corners with three equivalent Fe(10)Y3Fe9 cuboctahedra, corners with four equivalent Fe(4)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(11)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(10)Y3Fe9 cuboctahedra, edges with two equivalent Fe(4)Y2Fe10 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra,  a faceface with one Fe(1)Y2Fe10 cuboctahedra,  a faceface with one Fe(4)Y2Fe10 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with three equivalent Fe(7)Y2Fe10 cuboctahedra, faces with three equivalent Fe(8)Y2Fe10 cuboctahedra, and faces with three equivalent Fe(10)Y3Fe9 cuboctahedra. In the sixth Fe site, Fe(5) is bonded in a 12-coordinate geometry to two equivalent Y(2), one Fe(1), one Fe(2), one Fe(3), one Fe(4), one Fe(5), one Fe(8), one Fe(9), and three equivalent Fe(10) atoms. In the seventh Fe site, Fe(6) is bonded in a 14-coordinate geometry to one Y(1), one Fe(6), two equivalent Fe(11), two equivalent Fe(2), two equivalent Fe(3), two equivalent Fe(4), two equivalent Fe(7), and two equivalent Fe(8) atoms. In the eighth Fe site, Fe(7) is bonded to one Y(1), one Y(2), one Fe(2), one Fe(3), two equivalent Fe(11), two equivalent Fe(4), two equivalent Fe(6), and two equivalent Fe(8) atoms to form distorted FeY2Fe10 cuboctahedra that share corners with two equivalent Fe(4)Y2Fe10 cuboctahedra, corners with two equivalent Fe(8)Y2Fe10 cuboctahedra, corners with two equivalent Fe(10)Y3Fe9 cuboctahedra, corners with three equivalent Fe(7)Y2Fe10 cuboctahedra, corners with three equivalent Fe(9)Y3Fe9 cuboctahedra, corners with four equivalent Fe(11)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(1)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra, edges with two equivalent Fe(10)Y3Fe9 cuboctahedra,  a faceface with one Fe(9)Y3Fe9 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(10)Y3Fe9 cuboctahedra, faces with four equivalent Fe(8)Y2Fe10 cuboctahedra, and faces with six equivalent Fe(4)Y2Fe10 cuboctahedra. In the ninth Fe site, Fe(8) is bonded to one Y(1), one Y(2), one Fe(10), one Fe(11), one Fe(2), one Fe(3), one Fe(5), one Fe(6), one Fe(7), one Fe(9), and two equivalent Fe(4) atoms to form FeY2Fe10 cuboctahedra that share  a cornercorner with one Fe(1)Y2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Y2Fe10 cuboctahedra, corners with two equivalent Fe(11)Y2Fe10 cuboctahedra, corners with two equivalent Fe(9)Y3Fe9 cuboctahedra, corners with three equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with four equivalent Fe(10)Y3Fe9 cuboctahedra,  an edgeedge with one Fe(11)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(8)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(4)Y2Fe10 cuboctahedra, edges with two equivalent Fe(10)Y3Fe9 cuboctahedra,  a faceface with one Fe(1)Y2Fe10 cuboctahedra,  a faceface with one Fe(9)Y3Fe9 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(7)Y2Fe10 cuboctahedra, faces with two equivalent Fe(8)Y2Fe10 cuboctahedra, faces with two equivalent Fe(10)Y3Fe9 cuboctahedra, and faces with three equivalent Fe(4)Y2Fe10 cuboctahedra. In the tenth Fe site, Fe(9) is bonded to one Y(1), two equivalent Y(2), one Fe(2), two equivalent Fe(10), two equivalent Fe(4), two equivalent Fe(5), and two equivalent Fe(8) atoms to form FeY3Fe9 cuboctahedra that share  a cornercorner with one Fe(9)Y3Fe9 cuboctahedra, corners with three equivalent Fe(1)Y2Fe10 cuboctahedra, corners with three equivalent Fe(7)Y2Fe10 cuboctahedra, corners with four equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with four equivalent Fe(10)Y3Fe9 cuboctahedra,  an edgeedge with one Fe(7)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(11)Y2Fe10 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra, edges with two equivalent Fe(10)Y3Fe9 cuboctahedra,  a faceface with one Fe(1)Y2Fe10 cuboctahedra,  a faceface with one Fe(7)Y2Fe10 cuboctahedra, faces with two equivalent Fe(11)Y2Fe10 cuboctahedra, faces with two equivalent Fe(8)Y2Fe10 cuboctahedra, faces with four equivalent Fe(4)Y2Fe10 cuboctahedra, and faces with four equivalent Fe(10)Y3Fe9 cuboctahedra. In the eleventh Fe site, Fe(10) is bonded to three equivalent Y(2), one Fe(1), one Fe(10), one Fe(3), one Fe(4), one Fe(8), one Fe(9), and three equivalent Fe(5) atoms to form FeY3Fe9 cuboctahedra that share  a cornercorner with one Fe(1)Y2Fe10 cuboctahedra,  a cornercorner with one Fe(7)Y2Fe10 cuboctahedra, corners with two equivalent Fe(11)Y2Fe10 cuboctahedra, corners with two equivalent Fe(9)Y3Fe9 cuboctahedra, corners with three equivalent Fe(4)Y2Fe10 cuboctahedra, corners with four equivalent Fe(8)Y2Fe10 cuboctahedra, corners with five equivalent Fe(10)Y3Fe9 cuboctahedra,  an edgeedge with one Fe(1)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(4)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(7)Y2Fe10 cuboctahedra,  an edgeedge with one Fe(9)Y3Fe9 cuboctahedra, edges with two equivalent Fe(8)Y2Fe10 cuboctahedra, edges with three equivalent Fe(10)Y3Fe9 cuboctahedra,  a faceface with one Fe(1)Y2Fe10 cuboctahedra,  a faceface with one Fe(7)Y2Fe10 cuboctahedra, faces with two equivalent Fe(8)Y2Fe10 cuboctahedra, faces with two equivalent Fe(9)Y3Fe9 cuboctahedra, faces with three equivalent Fe(4)Y2Fe10 cuboctahedra, and faces with four equivalent Fe(10)Y3Fe9 cuboctahedra. is represented by the CIF card [CIF]
data_Y3Fe29
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.416
_cell_length_b   6.416
_cell_length_c   10.471
_cell_angle_alpha   85.138
_cell_angle_beta   85.138
_cell_angle_gamma   82.673
_symmetry_Int_Tables_number   1
_cell_volume   424.827
_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
  Y  Y0  1  0.000  0.000  0.000  1.0
  Y  Y1  1  0.188  0.188  0.402  1.0
  Y  Y2  1  0.812  0.812  0.598  1.0
  Fe  Fe3  1  0.500  0.500  0.500  1.0
  Fe  Fe4  1  0.290  0.290  0.859  1.0
  Fe  Fe5  1  0.710  0.710  0.141  1.0
  Fe  Fe6  1  0.520  0.520  0.746  1.0
  Fe  Fe7  1  0.480  0.480  0.254  1.0
  Fe  Fe8  1  0.127  0.689  0.802  1.0
  Fe  Fe9  1  0.311  0.873  0.198  1.0
  Fe  Fe10  1  0.873  0.311  0.198  1.0
  Fe  Fe11  1  0.689  0.127  0.802  1.0
  Fe  Fe12  1  0.165  0.461  0.622  1.0
  Fe  Fe13  1  0.539  0.835  0.378  1.0
  Fe  Fe14  1  0.835  0.539  0.378  1.0
  Fe  Fe15  1  0.461  0.165  0.622  1.0
  Fe  Fe16  1  0.642  0.358  0.000  1.0
  Fe  Fe17  1  0.358  0.642  0.000  1.0
  Fe  Fe18  1  0.278  0.278  0.108  1.0
  Fe  Fe19  1  0.722  0.722  0.892  1.0
  Fe  Fe20  1  0.407  0.902  0.802  1.0
  Fe  Fe21  1  0.098  0.593  0.198  1.0
  Fe  Fe22  1  0.593  0.098  0.198  1.0
  Fe  Fe23  1  0.902  0.407  0.802  1.0
  Fe  Fe24  1  0.908  0.908  0.292  1.0
  Fe  Fe25  1  0.092  0.092  0.708  1.0
  Fe  Fe26  1  0.314  0.813  0.595  1.0
  Fe  Fe27  1  0.187  0.686  0.405  1.0
  Fe  Fe28  1  0.686  0.187  0.405  1.0
  Fe  Fe29  1  0.813  0.314  0.595  1.0
  Fe  Fe30  1  0.500  0.000  0.000  1.0
  Fe  Fe31  1  0.000  0.500  0.000  1.0
[/CIF]
.