The compound described by TbWFe11 crystallizes in the orthorhombic Imm2 space group. Tb(1) is bonded in a 20-coordinate geometry to one W(1), one Fe(5), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(6), four equivalent Fe(3), and eight equivalent Fe(4) atoms. W(1) is bonded in a 14-coordinate geometry to one Tb(1), one Fe(5), two equivalent Fe(2), two equivalent Fe(3), four equivalent Fe(4), and four equivalent Fe(6) atoms. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Tb(1), two equivalent Fe(3), two equivalent Fe(5), two equivalent Fe(6), and four equivalent Fe(4) atoms to form distorted FeTb2Fe10 cuboctahedra that share corners with eight equivalent Fe(4)Tb2Fe9W cuboctahedra, edges with two equivalent Fe(1)Tb2Fe10 cuboctahedra, edges with four equivalent Fe(4)Tb2Fe9W cuboctahedra, and faces with eight equivalent Fe(4)Tb2Fe9W cuboctahedra. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Tb(1), two equivalent W(1), two equivalent Fe(3), two equivalent Fe(6), and four equivalent Fe(4) atoms. In the third Fe site, Fe(3) is bonded in a 12-coordinate geometry to two equivalent Tb(1), one W(1), one Fe(1), one Fe(2), one Fe(5), two equivalent Fe(6), and four equivalent Fe(4) atoms. In the fourth Fe site, Fe(4) is bonded to two equivalent Tb(1), one W(1), one Fe(1), one Fe(2), one Fe(5), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Fe(6) atoms to form distorted FeTb2Fe9W cuboctahedra that share corners with two equivalent Fe(1)Tb2Fe10 cuboctahedra, corners with ten equivalent Fe(4)Tb2Fe9W cuboctahedra,  an edgeedge with one Fe(1)Tb2Fe10 cuboctahedra, edges with four equivalent Fe(4)Tb2Fe9W cuboctahedra, faces with two equivalent Fe(1)Tb2Fe10 cuboctahedra, and faces with six equivalent Fe(4)Tb2Fe9W cuboctahedra. In the fifth Fe site, Fe(5) is bonded in a distorted single-bond geometry to one Tb(1), one W(1), two equivalent Fe(1), two equivalent Fe(3), four equivalent Fe(4), and four equivalent Fe(6) atoms. In the sixth Fe site, Fe(6) is bonded in a 14-coordinate geometry to one Tb(1), two equivalent W(1), one Fe(1), one Fe(2), one Fe(6), two equivalent Fe(3), two equivalent Fe(5), and four equivalent Fe(4) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TbFe11W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.695
_cell_length_b   6.463
_cell_length_c   6.463
_cell_angle_alpha   97.948
_cell_angle_beta   111.301
_cell_angle_gamma   68.699
_symmetry_Int_Tables_number   1
_cell_volume   170.232
_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
  Tb  Tb0  1  0.006  0.994  0.006  1.0
  Fe  Fe1  1  0.731  0.769  0.231  1.0
  Fe  Fe2  1  0.273  0.227  0.773  1.0
  Fe  Fe3  1  0.498  0.778  0.775  1.0
  Fe  Fe4  1  0.498  0.225  0.222  1.0
  Fe  Fe5  1  0.501  0.999  0.501  1.0
  Fe  Fe6  1  0.001  0.999  0.501  1.0
  Fe  Fe7  1  0.501  0.499  0.001  1.0
  Fe  Fe8  1  0.001  0.499  0.001  1.0
  Fe  Fe9  1  0.356  0.644  0.356  1.0
  Fe  Fe10  1  0.000  0.358  0.359  1.0
  Fe  Fe11  1  0.000  0.641  0.642  1.0
  W  W12  1  0.633  0.367  0.633  1.0
[/CIF]
.
The compound described by TbWFe11 crystallizes in the orthorhombic Imm2 space group. Tb(1) is bonded in a 20-coordinate geometry to one W(1), one Fe(5), two equivalent Fe(1), two equivalent Fe(2), two equivalent Fe(6), four equivalent Fe(3), and eight equivalent Fe(4) atoms. W(1) is bonded in a 14-coordinate geometry to one Tb(1), one Fe(5), two equivalent Fe(2), two equivalent Fe(3), four equivalent Fe(4), and four equivalent Fe(6) atoms. There are six inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to two equivalent Tb(1), two equivalent Fe(3), two equivalent Fe(5), two equivalent Fe(6), and four equivalent Fe(4) atoms to form distorted FeTb2Fe10 cuboctahedra that share corners with eight equivalent Fe(4)Tb2Fe9W cuboctahedra, edges with two equivalent Fe(1)Tb2Fe10 cuboctahedra, edges with four equivalent Fe(4)Tb2Fe9W cuboctahedra, and faces with eight equivalent Fe(4)Tb2Fe9W cuboctahedra. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Tb(1), two equivalent W(1), two equivalent Fe(3), two equivalent Fe(6), and four equivalent Fe(4) atoms. In the third Fe site, Fe(3) is bonded in a 12-coordinate geometry to two equivalent Tb(1), one W(1), one Fe(1), one Fe(2), one Fe(5), two equivalent Fe(6), and four equivalent Fe(4) atoms. In the fourth Fe site, Fe(4) is bonded to two equivalent Tb(1), one W(1), one Fe(1), one Fe(2), one Fe(5), two equivalent Fe(3), two equivalent Fe(4), and two equivalent Fe(6) atoms to form distorted FeTb2Fe9W cuboctahedra that share corners with two equivalent Fe(1)Tb2Fe10 cuboctahedra, corners with ten equivalent Fe(4)Tb2Fe9W cuboctahedra,  an edgeedge with one Fe(1)Tb2Fe10 cuboctahedra, edges with four equivalent Fe(4)Tb2Fe9W cuboctahedra, faces with two equivalent Fe(1)Tb2Fe10 cuboctahedra, and faces with six equivalent Fe(4)Tb2Fe9W cuboctahedra. In the fifth Fe site, Fe(5) is bonded in a distorted single-bond geometry to one Tb(1), one W(1), two equivalent Fe(1), two equivalent Fe(3), four equivalent Fe(4), and four equivalent Fe(6) atoms. In the sixth Fe site, Fe(6) is bonded in a 14-coordinate geometry to one Tb(1), two equivalent W(1), one Fe(1), one Fe(2), one Fe(6), two equivalent Fe(3), two equivalent Fe(5), and four equivalent Fe(4) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_TbFe11W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.695
_cell_length_b   6.463
_cell_length_c   6.463
_cell_angle_alpha   97.948
_cell_angle_beta   111.301
_cell_angle_gamma   68.699
_symmetry_Int_Tables_number   1
_cell_volume   170.232
_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
  Tb  Tb0  1  0.006  0.994  0.006  1.0
  Fe  Fe1  1  0.731  0.769  0.231  1.0
  Fe  Fe2  1  0.273  0.227  0.773  1.0
  Fe  Fe3  1  0.498  0.778  0.775  1.0
  Fe  Fe4  1  0.498  0.225  0.222  1.0
  Fe  Fe5  1  0.501  0.999  0.501  1.0
  Fe  Fe6  1  0.001  0.999  0.501  1.0
  Fe  Fe7  1  0.501  0.499  0.001  1.0
  Fe  Fe8  1  0.001  0.499  0.001  1.0
  Fe  Fe9  1  0.356  0.644  0.356  1.0
  Fe  Fe10  1  0.000  0.358  0.359  1.0
  Fe  Fe11  1  0.000  0.641  0.642  1.0
  W  W12  1  0.633  0.367  0.633  1.0
[/CIF]
.