The material structure described by Th4FeSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Th sites. In the first Th site, Th(1) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(6), and four equivalent Sn(7) atoms. In the second Th site, Th(2) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(4), two equivalent Sn(5), and four equivalent Sn(8) atoms. In the third Th site, Th(3) is bonded in a 14-coordinate geometry to four equivalent Fe(1), two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(8), and four equivalent Sn(5) atoms. In the fourth Th site, Th(4) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(4), two equivalent Sn(7), and four equivalent Sn(6) atoms. Fe(1) is bonded in a 5-coordinate geometry to four equivalent Th(3), one Sn(5), two equivalent Sn(1), and two equivalent Sn(3) atoms. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to two equivalent Th(1), two equivalent Th(3), two equivalent Fe(1), and four equivalent Sn(3) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Th(2), two equivalent Th(4), and four equivalent Sn(4) atoms. In the third Sn site, Sn(3) is bonded in a 10-coordinate geometry to two equivalent Th(1), two equivalent Th(3), two equivalent Fe(1), and four equivalent Sn(1) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Th(2), two equivalent Th(4), and four equivalent Sn(2) atoms. In the fifth Sn site, Sn(5) is bonded in a 9-coordinate geometry to two equivalent Th(2), four equivalent Th(3), one Fe(1), and two equivalent Sn(8) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Th(1), four equivalent Th(4), and two equivalent Sn(7) atoms. In the seventh Sn site, Sn(7) is bonded in a 8-coordinate geometry to two equivalent Th(4), four equivalent Th(1), and two equivalent Sn(6) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Th(3), four equivalent Th(2), and two equivalent Sn(5) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Th4FeSn8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.499
_cell_length_b   4.524
_cell_length_c   17.196
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   350.022
_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
  Th  Th0  1  0.250  0.000  0.398  1.0
  Th  Th1  1  0.250  0.500  0.895  1.0
  Th  Th2  1  0.750  0.500  0.106  1.0
  Th  Th3  1  0.750  0.000  0.602  1.0
  Fe  Fe4  1  0.250  0.000  0.193  1.0
  Sn  Sn5  1  0.250  0.500  0.260  1.0
  Sn  Sn6  1  0.250  0.000  0.748  1.0
  Sn  Sn7  1  0.750  0.000  0.260  1.0
  Sn  Sn8  1  0.750  0.500  0.749  1.0
  Sn  Sn9  1  0.250  0.000  0.049  1.0
  Sn  Sn10  1  0.250  0.500  0.562  1.0
  Sn  Sn11  1  0.750  0.500  0.438  1.0
  Sn  Sn12  1  0.750  0.000  0.936  1.0
[/CIF]
.
The material structure described by Th4FeSn8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Th sites. In the first Th site, Th(1) is bonded in a 10-coordinate geometry to two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(6), and four equivalent Sn(7) atoms. In the second Th site, Th(2) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(4), two equivalent Sn(5), and four equivalent Sn(8) atoms. In the third Th site, Th(3) is bonded in a 14-coordinate geometry to four equivalent Fe(1), two equivalent Sn(1), two equivalent Sn(3), two equivalent Sn(8), and four equivalent Sn(5) atoms. In the fourth Th site, Th(4) is bonded in a 10-coordinate geometry to two equivalent Sn(2), two equivalent Sn(4), two equivalent Sn(7), and four equivalent Sn(6) atoms. Fe(1) is bonded in a 5-coordinate geometry to four equivalent Th(3), one Sn(5), two equivalent Sn(1), and two equivalent Sn(3) atoms. There are eight inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to two equivalent Th(1), two equivalent Th(3), two equivalent Fe(1), and four equivalent Sn(3) atoms. In the second Sn site, Sn(2) is bonded in a 8-coordinate geometry to two equivalent Th(2), two equivalent Th(4), and four equivalent Sn(4) atoms. In the third Sn site, Sn(3) is bonded in a 10-coordinate geometry to two equivalent Th(1), two equivalent Th(3), two equivalent Fe(1), and four equivalent Sn(1) atoms. In the fourth Sn site, Sn(4) is bonded in a 8-coordinate geometry to two equivalent Th(2), two equivalent Th(4), and four equivalent Sn(2) atoms. In the fifth Sn site, Sn(5) is bonded in a 9-coordinate geometry to two equivalent Th(2), four equivalent Th(3), one Fe(1), and two equivalent Sn(8) atoms. In the sixth Sn site, Sn(6) is bonded in a 8-coordinate geometry to two equivalent Th(1), four equivalent Th(4), and two equivalent Sn(7) atoms. In the seventh Sn site, Sn(7) is bonded in a 8-coordinate geometry to two equivalent Th(4), four equivalent Th(1), and two equivalent Sn(6) atoms. In the eighth Sn site, Sn(8) is bonded in a 8-coordinate geometry to two equivalent Th(3), four equivalent Th(2), and two equivalent Sn(5) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Th4FeSn8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.499
_cell_length_b   4.524
_cell_length_c   17.196
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   350.022
_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
  Th  Th0  1  0.250  0.000  0.398  1.0
  Th  Th1  1  0.250  0.500  0.895  1.0
  Th  Th2  1  0.750  0.500  0.106  1.0
  Th  Th3  1  0.750  0.000  0.602  1.0
  Fe  Fe4  1  0.250  0.000  0.193  1.0
  Sn  Sn5  1  0.250  0.500  0.260  1.0
  Sn  Sn6  1  0.250  0.000  0.748  1.0
  Sn  Sn7  1  0.750  0.000  0.260  1.0
  Sn  Sn8  1  0.750  0.500  0.749  1.0
  Sn  Sn9  1  0.250  0.000  0.049  1.0
  Sn  Sn10  1  0.250  0.500  0.562  1.0
  Sn  Sn11  1  0.750  0.500  0.438  1.0
  Sn  Sn12  1  0.750  0.000  0.936  1.0
[/CIF]
.