The structure described by TbFeSb3 is Magnesium tetraboride-derived structured and crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 11-coordinate geometry to two equivalent Fe(1), one Sb(1), two equivalent Sb(2), two equivalent Sb(4), and four equivalent Sb(3) atoms. In the second Tb site, Tb(2) is bonded in a 11-coordinate geometry to two equivalent Fe(1), one Sb(5), two equivalent Sb(2), two equivalent Sb(4), and four equivalent Sb(3) atoms. Fe(1) is bonded in a 9-coordinate geometry to one Tb(1), one Tb(2), one Fe(1), one Sb(2), one Sb(4), two equivalent Sb(1), and two equivalent Sb(5) atoms. There are five inequivalent Sb sites. In the first Sb site, Sb(4) is bonded in a 6-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and two equivalent Fe(1) atoms. In the second Sb site, Sb(5) is bonded in a 5-coordinate geometry to one Tb(2), four equivalent Fe(1), and one Sb(2) atom. In the third Sb site, Sb(1) is bonded in a 5-coordinate geometry to one Tb(1) and four equivalent Fe(1) atoms. In the fourth Sb site, Sb(2) is bonded in a 7-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), two equivalent Fe(1), and one Sb(5) atom. In the fifth Sb site, Sb(3) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Sb(3) atoms. is represented by the CIF card [CIF]
data_TbFeSb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.103
_cell_length_b   12.029
_cell_length_c   12.452
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   914.148
_cell_formula_units_Z   8
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  0.250  0.500  0.701  1.0
  Tb  Tb1  1  0.750  0.000  0.299  1.0
  Tb  Tb2  1  0.750  0.500  0.299  1.0
  Tb  Tb3  1  0.250  0.000  0.701  1.0
  Tb  Tb4  1  0.222  0.250  0.305  1.0
  Tb  Tb5  1  0.778  0.750  0.695  1.0
  Tb  Tb6  1  0.278  0.750  0.305  1.0
  Tb  Tb7  1  0.722  0.250  0.695  1.0
  Fe  Fe8  1  0.462  0.361  0.104  1.0
  Fe  Fe9  1  0.538  0.861  0.896  1.0
  Fe  Fe10  1  0.038  0.639  0.104  1.0
  Fe  Fe11  1  0.962  0.139  0.896  1.0
  Fe  Fe12  1  0.538  0.639  0.896  1.0
  Fe  Fe13  1  0.462  0.139  0.104  1.0
  Fe  Fe14  1  0.962  0.361  0.896  1.0
  Fe  Fe15  1  0.038  0.861  0.104  1.0
  Sb  Sb16  1  0.250  0.500  0.972  1.0
  Sb  Sb17  1  0.750  0.000  0.028  1.0
  Sb  Sb18  1  0.750  0.500  0.028  1.0
  Sb  Sb19  1  0.250  0.000  0.972  1.0
  Sb  Sb20  1  0.234  0.250  0.778  1.0
  Sb  Sb21  1  0.766  0.750  0.222  1.0
  Sb  Sb22  1  0.266  0.750  0.778  1.0
  Sb  Sb23  1  0.734  0.250  0.222  1.0
  Sb  Sb24  1  0.987  0.376  0.503  1.0
  Sb  Sb25  1  0.013  0.876  0.497  1.0
  Sb  Sb26  1  0.513  0.624  0.503  1.0
  Sb  Sb27  1  0.487  0.124  0.497  1.0
  Sb  Sb28  1  0.013  0.624  0.497  1.0
  Sb  Sb29  1  0.987  0.124  0.503  1.0
  Sb  Sb30  1  0.487  0.376  0.497  1.0
  Sb  Sb31  1  0.513  0.876  0.503  1.0
  Sb  Sb32  1  0.250  0.500  0.225  1.0
  Sb  Sb33  1  0.750  0.000  0.775  1.0
  Sb  Sb34  1  0.750  0.500  0.775  1.0
  Sb  Sb35  1  0.250  0.000  0.225  1.0
  Sb  Sb36  1  0.611  0.250  0.942  1.0
  Sb  Sb37  1  0.389  0.750  0.058  1.0
  Sb  Sb38  1  0.889  0.750  0.942  1.0
  Sb  Sb39  1  0.111  0.250  0.058  1.0
[/CIF]
.
The structure described by TbFeSb3 is Magnesium tetraboride-derived structured and crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 11-coordinate geometry to two equivalent Fe(1), one Sb(1), two equivalent Sb(2), two equivalent Sb(4), and four equivalent Sb(3) atoms. In the second Tb site, Tb(2) is bonded in a 11-coordinate geometry to two equivalent Fe(1), one Sb(5), two equivalent Sb(2), two equivalent Sb(4), and four equivalent Sb(3) atoms. Fe(1) is bonded in a 9-coordinate geometry to one Tb(1), one Tb(2), one Fe(1), one Sb(2), one Sb(4), two equivalent Sb(1), and two equivalent Sb(5) atoms. There are five inequivalent Sb sites. In the first Sb site, Sb(4) is bonded in a 6-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and two equivalent Fe(1) atoms. In the second Sb site, Sb(5) is bonded in a 5-coordinate geometry to one Tb(2), four equivalent Fe(1), and one Sb(2) atom. In the third Sb site, Sb(1) is bonded in a 5-coordinate geometry to one Tb(1) and four equivalent Fe(1) atoms. In the fourth Sb site, Sb(2) is bonded in a 7-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), two equivalent Fe(1), and one Sb(5) atom. In the fifth Sb site, Sb(3) is bonded in a 8-coordinate geometry to two equivalent Tb(1), two equivalent Tb(2), and four equivalent Sb(3) atoms. is represented by the CIF card [CIF]
data_TbFeSb3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.103
_cell_length_b   12.029
_cell_length_c   12.452
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   914.148
_cell_formula_units_Z   8
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  0.250  0.500  0.701  1.0
  Tb  Tb1  1  0.750  0.000  0.299  1.0
  Tb  Tb2  1  0.750  0.500  0.299  1.0
  Tb  Tb3  1  0.250  0.000  0.701  1.0
  Tb  Tb4  1  0.222  0.250  0.305  1.0
  Tb  Tb5  1  0.778  0.750  0.695  1.0
  Tb  Tb6  1  0.278  0.750  0.305  1.0
  Tb  Tb7  1  0.722  0.250  0.695  1.0
  Fe  Fe8  1  0.462  0.361  0.104  1.0
  Fe  Fe9  1  0.538  0.861  0.896  1.0
  Fe  Fe10  1  0.038  0.639  0.104  1.0
  Fe  Fe11  1  0.962  0.139  0.896  1.0
  Fe  Fe12  1  0.538  0.639  0.896  1.0
  Fe  Fe13  1  0.462  0.139  0.104  1.0
  Fe  Fe14  1  0.962  0.361  0.896  1.0
  Fe  Fe15  1  0.038  0.861  0.104  1.0
  Sb  Sb16  1  0.250  0.500  0.972  1.0
  Sb  Sb17  1  0.750  0.000  0.028  1.0
  Sb  Sb18  1  0.750  0.500  0.028  1.0
  Sb  Sb19  1  0.250  0.000  0.972  1.0
  Sb  Sb20  1  0.234  0.250  0.778  1.0
  Sb  Sb21  1  0.766  0.750  0.222  1.0
  Sb  Sb22  1  0.266  0.750  0.778  1.0
  Sb  Sb23  1  0.734  0.250  0.222  1.0
  Sb  Sb24  1  0.987  0.376  0.503  1.0
  Sb  Sb25  1  0.013  0.876  0.497  1.0
  Sb  Sb26  1  0.513  0.624  0.503  1.0
  Sb  Sb27  1  0.487  0.124  0.497  1.0
  Sb  Sb28  1  0.013  0.624  0.497  1.0
  Sb  Sb29  1  0.987  0.124  0.503  1.0
  Sb  Sb30  1  0.487  0.376  0.497  1.0
  Sb  Sb31  1  0.513  0.876  0.503  1.0
  Sb  Sb32  1  0.250  0.500  0.225  1.0
  Sb  Sb33  1  0.750  0.000  0.775  1.0
  Sb  Sb34  1  0.750  0.500  0.775  1.0
  Sb  Sb35  1  0.250  0.000  0.225  1.0
  Sb  Sb36  1  0.611  0.250  0.942  1.0
  Sb  Sb37  1  0.389  0.750  0.058  1.0
  Sb  Sb38  1  0.889  0.750  0.942  1.0
  Sb  Sb39  1  0.111  0.250  0.058  1.0
[/CIF]
.