The structure described by U(FeZn10)2 crystallizes in the cubic Fd-3m space group. U(1) is bonded in a 16-coordinate geometry to four equivalent Zn(1) and twelve equivalent Zn(3) atoms. Fe(1) is bonded to six equivalent Zn(2) and six equivalent Zn(3) atoms to form FeZn12 cuboctahedra that share corners with six equivalent Fe(1)Zn12 cuboctahedra, edges with eighteen equivalent Zn(3)UZn10Fe cuboctahedra, and faces with six equivalent Zn(3)UZn10Fe cuboctahedra. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 14-coordinate geometry to two equivalent U(1) and twelve equivalent Zn(3) atoms. In the second Zn site, Zn(2) is bonded in a 12-coordinate geometry to two equivalent Fe(1), four equivalent Zn(2), and six equivalent Zn(3) atoms. In the third Zn site, Zn(3) is bonded to one U(1), one Fe(1), two equivalent Zn(1), three equivalent Zn(2), and five equivalent Zn(3) atoms to form distorted ZnUZn10Fe cuboctahedra that share corners with fifteen equivalent Zn(3)UZn10Fe cuboctahedra, edges with two equivalent Zn(3)UZn10Fe cuboctahedra, edges with three equivalent Fe(1)Zn12 cuboctahedra,  a faceface with one Fe(1)Zn12 cuboctahedra, and faces with fifteen equivalent Zn(3)UZn10Fe cuboctahedra. is represented by the CIF card [CIF]
data_U(Zn10Fe)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.956
_cell_length_b   9.956
_cell_length_c   9.956
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   697.841
_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
  U  U0  1  0.500  0.500  0.500  1.0
  U  U1  1  0.750  0.750  0.750  1.0
  Zn  Zn2  1  0.125  0.625  0.625  1.0
  Zn  Zn3  1  0.625  0.125  0.625  1.0
  Zn  Zn4  1  0.625  0.625  0.125  1.0
  Zn  Zn5  1  0.625  0.625  0.625  1.0
  Zn  Zn6  1  0.864  0.864  0.136  1.0
  Zn  Zn7  1  0.136  0.136  0.864  1.0
  Zn  Zn8  1  0.864  0.136  0.864  1.0
  Zn  Zn9  1  0.136  0.864  0.136  1.0
  Zn  Zn10  1  0.136  0.864  0.864  1.0
  Zn  Zn11  1  0.864  0.136  0.136  1.0
  Zn  Zn12  1  0.386  0.386  0.114  1.0
  Zn  Zn13  1  0.114  0.114  0.386  1.0
  Zn  Zn14  1  0.386  0.114  0.386  1.0
  Zn  Zn15  1  0.114  0.386  0.114  1.0
  Zn  Zn16  1  0.114  0.386  0.386  1.0
  Zn  Zn17  1  0.386  0.114  0.114  1.0
  Zn  Zn18  1  0.569  0.299  0.299  1.0
  Zn  Zn19  1  0.299  0.569  0.833  1.0
  Zn  Zn20  1  0.299  0.833  0.569  1.0
  Zn  Zn21  1  0.833  0.299  0.299  1.0
  Zn  Zn22  1  0.299  0.299  0.569  1.0
  Zn  Zn23  1  0.569  0.833  0.299  1.0
  Zn  Zn24  1  0.833  0.569  0.299  1.0
  Zn  Zn25  1  0.299  0.299  0.833  1.0
  Zn  Zn26  1  0.299  0.569  0.299  1.0
  Zn  Zn27  1  0.833  0.299  0.569  1.0
  Zn  Zn28  1  0.569  0.299  0.833  1.0
  Zn  Zn29  1  0.299  0.833  0.299  1.0
  Zn  Zn30  1  0.681  0.951  0.951  1.0
  Zn  Zn31  1  0.951  0.681  0.417  1.0
  Zn  Zn32  1  0.951  0.417  0.681  1.0
  Zn  Zn33  1  0.417  0.951  0.951  1.0
  Zn  Zn34  1  0.951  0.951  0.681  1.0
  Zn  Zn35  1  0.681  0.417  0.951  1.0
  Zn  Zn36  1  0.417  0.681  0.951  1.0
  Zn  Zn37  1  0.951  0.951  0.417  1.0
  Zn  Zn38  1  0.951  0.681  0.951  1.0
  Zn  Zn39  1  0.417  0.951  0.681  1.0
  Zn  Zn40  1  0.681  0.951  0.417  1.0
  Zn  Zn41  1  0.951  0.417  0.951  1.0
  Fe  Fe42  1  0.625  0.125  0.125  1.0
  Fe  Fe43  1  0.125  0.625  0.125  1.0
  Fe  Fe44  1  0.125  0.125  0.625  1.0
  Fe  Fe45  1  0.125  0.125  0.125  1.0
[/CIF]
.
The structure described by U(FeZn10)2 crystallizes in the cubic Fd-3m space group. U(1) is bonded in a 16-coordinate geometry to four equivalent Zn(1) and twelve equivalent Zn(3) atoms. Fe(1) is bonded to six equivalent Zn(2) and six equivalent Zn(3) atoms to form FeZn12 cuboctahedra that share corners with six equivalent Fe(1)Zn12 cuboctahedra, edges with eighteen equivalent Zn(3)UZn10Fe cuboctahedra, and faces with six equivalent Zn(3)UZn10Fe cuboctahedra. There are three inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in a 14-coordinate geometry to two equivalent U(1) and twelve equivalent Zn(3) atoms. In the second Zn site, Zn(2) is bonded in a 12-coordinate geometry to two equivalent Fe(1), four equivalent Zn(2), and six equivalent Zn(3) atoms. In the third Zn site, Zn(3) is bonded to one U(1), one Fe(1), two equivalent Zn(1), three equivalent Zn(2), and five equivalent Zn(3) atoms to form distorted ZnUZn10Fe cuboctahedra that share corners with fifteen equivalent Zn(3)UZn10Fe cuboctahedra, edges with two equivalent Zn(3)UZn10Fe cuboctahedra, edges with three equivalent Fe(1)Zn12 cuboctahedra,  a faceface with one Fe(1)Zn12 cuboctahedra, and faces with fifteen equivalent Zn(3)UZn10Fe cuboctahedra. is represented by the CIF card [CIF]
data_U(Zn10Fe)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.956
_cell_length_b   9.956
_cell_length_c   9.956
_cell_angle_alpha   60.000
_cell_angle_beta   60.000
_cell_angle_gamma   60.000
_symmetry_Int_Tables_number   1
_cell_volume   697.841
_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
  U  U0  1  0.500  0.500  0.500  1.0
  U  U1  1  0.750  0.750  0.750  1.0
  Zn  Zn2  1  0.125  0.625  0.625  1.0
  Zn  Zn3  1  0.625  0.125  0.625  1.0
  Zn  Zn4  1  0.625  0.625  0.125  1.0
  Zn  Zn5  1  0.625  0.625  0.625  1.0
  Zn  Zn6  1  0.864  0.864  0.136  1.0
  Zn  Zn7  1  0.136  0.136  0.864  1.0
  Zn  Zn8  1  0.864  0.136  0.864  1.0
  Zn  Zn9  1  0.136  0.864  0.136  1.0
  Zn  Zn10  1  0.136  0.864  0.864  1.0
  Zn  Zn11  1  0.864  0.136  0.136  1.0
  Zn  Zn12  1  0.386  0.386  0.114  1.0
  Zn  Zn13  1  0.114  0.114  0.386  1.0
  Zn  Zn14  1  0.386  0.114  0.386  1.0
  Zn  Zn15  1  0.114  0.386  0.114  1.0
  Zn  Zn16  1  0.114  0.386  0.386  1.0
  Zn  Zn17  1  0.386  0.114  0.114  1.0
  Zn  Zn18  1  0.569  0.299  0.299  1.0
  Zn  Zn19  1  0.299  0.569  0.833  1.0
  Zn  Zn20  1  0.299  0.833  0.569  1.0
  Zn  Zn21  1  0.833  0.299  0.299  1.0
  Zn  Zn22  1  0.299  0.299  0.569  1.0
  Zn  Zn23  1  0.569  0.833  0.299  1.0
  Zn  Zn24  1  0.833  0.569  0.299  1.0
  Zn  Zn25  1  0.299  0.299  0.833  1.0
  Zn  Zn26  1  0.299  0.569  0.299  1.0
  Zn  Zn27  1  0.833  0.299  0.569  1.0
  Zn  Zn28  1  0.569  0.299  0.833  1.0
  Zn  Zn29  1  0.299  0.833  0.299  1.0
  Zn  Zn30  1  0.681  0.951  0.951  1.0
  Zn  Zn31  1  0.951  0.681  0.417  1.0
  Zn  Zn32  1  0.951  0.417  0.681  1.0
  Zn  Zn33  1  0.417  0.951  0.951  1.0
  Zn  Zn34  1  0.951  0.951  0.681  1.0
  Zn  Zn35  1  0.681  0.417  0.951  1.0
  Zn  Zn36  1  0.417  0.681  0.951  1.0
  Zn  Zn37  1  0.951  0.951  0.417  1.0
  Zn  Zn38  1  0.951  0.681  0.951  1.0
  Zn  Zn39  1  0.417  0.951  0.681  1.0
  Zn  Zn40  1  0.681  0.951  0.417  1.0
  Zn  Zn41  1  0.951  0.417  0.951  1.0
  Fe  Fe42  1  0.625  0.125  0.125  1.0
  Fe  Fe43  1  0.125  0.625  0.125  1.0
  Fe  Fe44  1  0.125  0.125  0.625  1.0
  Fe  Fe45  1  0.125  0.125  0.125  1.0
[/CIF]
.