The crystal structure described by Tm9(FeGe)10 crystallizes in the orthorhombic Immm space group. There are four inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 14-coordinate geometry to four equivalent Fe(1), eight equivalent Fe(2), and two equivalent Ge(3) atoms. In the second Tm site, Tm(2) is bonded in a 10-coordinate geometry to four equivalent Fe(2), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(4) atoms. In the third Tm site, Tm(3) is bonded in a 7-coordinate geometry to one Fe(1), four equivalent Fe(2), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(4) atoms. In the fourth Tm site, Tm(4) is bonded in a 7-coordinate geometry to four equivalent Fe(2), one Ge(2), one Ge(3), two equivalent Ge(1), and three equivalent Ge(4) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 10-coordinate geometry to one Tm(3), two equivalent Tm(1), one Fe(1), four equivalent Fe(2), and two equivalent Ge(2) atoms. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to one Tm(1), one Tm(2), one Tm(3), two equivalent Tm(4), one Fe(1), two equivalent Fe(2), one Ge(2), one Ge(3), and two equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Tm(2), two equivalent Tm(3), four equivalent Tm(4), and two equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 10-coordinate geometry to two equivalent Tm(2), two equivalent Tm(4), two equivalent Fe(1), and four equivalent Fe(2) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Tm(1), two equivalent Tm(3), two equivalent Tm(4), and four equivalent Fe(2) atoms. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to one Tm(2), one Tm(3), three equivalent Tm(4), and four equivalent Fe(2) atoms. is represented by the CIF file [CIF]
data_Tm9(FeGe)10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.023
_cell_length_b   10.022
_cell_length_c   10.022
_cell_angle_alpha   148.811
_cell_angle_beta   96.858
_cell_angle_gamma   91.434
_symmetry_Int_Tables_number   1
_cell_volume   501.522
_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
  Tm  Tm0  1  0.500  1.000  0.500  1.0
  Tm  Tm1  1  0.784  1.000  0.784  1.0
  Tm  Tm2  1  0.216  0.000  0.216  1.0
  Tm  Tm3  1  0.195  0.195  1.000  1.0
  Tm  Tm4  1  0.805  0.805  0.000  1.0
  Tm  Tm5  1  0.990  0.637  0.353  1.0
  Tm  Tm6  1  0.010  0.363  0.647  1.0
  Tm  Tm7  1  0.717  0.363  0.353  1.0
  Tm  Tm8  1  0.283  0.637  0.647  1.0
  Fe  Fe9  1  0.406  0.406  0.000  1.0
  Fe  Fe10  1  0.594  0.594  1.000  1.0
  Fe  Fe11  1  0.202  0.101  0.611  1.0
  Fe  Fe12  1  0.798  0.409  0.899  1.0
  Fe  Fe13  1  0.509  0.899  0.101  1.0
  Fe  Fe14  1  0.491  0.592  0.389  1.0
  Fe  Fe15  1  0.798  0.899  0.389  1.0
  Fe  Fe16  1  0.202  0.591  0.101  1.0
  Fe  Fe17  1  0.491  0.101  0.899  1.0
  Fe  Fe18  1  0.509  0.409  0.611  1.0
  Ge  Ge19  1  1.000  0.749  0.749  1.0
  Ge  Ge20  1  0.000  0.251  0.251  1.0
  Ge  Ge21  1  0.672  0.500  0.172  1.0
  Ge  Ge22  1  0.328  0.500  0.828  1.0
  Ge  Ge23  1  0.290  0.790  0.500  1.0
  Ge  Ge24  1  0.710  0.210  0.500  1.0
  Ge  Ge25  1  0.992  0.203  0.790  1.0
  Ge  Ge26  1  0.008  0.797  0.210  1.0
  Ge  Ge27  1  0.587  0.797  0.790  1.0
  Ge  Ge28  1  0.413  0.203  0.210  1.0
[/CIF]
.
The crystal structure described by Tm9(FeGe)10 crystallizes in the orthorhombic Immm space group. There are four inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 14-coordinate geometry to four equivalent Fe(1), eight equivalent Fe(2), and two equivalent Ge(3) atoms. In the second Tm site, Tm(2) is bonded in a 10-coordinate geometry to four equivalent Fe(2), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(4) atoms. In the third Tm site, Tm(3) is bonded in a 7-coordinate geometry to one Fe(1), four equivalent Fe(2), two equivalent Ge(1), two equivalent Ge(3), and two equivalent Ge(4) atoms. In the fourth Tm site, Tm(4) is bonded in a 7-coordinate geometry to four equivalent Fe(2), one Ge(2), one Ge(3), two equivalent Ge(1), and three equivalent Ge(4) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 10-coordinate geometry to one Tm(3), two equivalent Tm(1), one Fe(1), four equivalent Fe(2), and two equivalent Ge(2) atoms. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to one Tm(1), one Tm(2), one Tm(3), two equivalent Tm(4), one Fe(1), two equivalent Fe(2), one Ge(2), one Ge(3), and two equivalent Ge(4) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Tm(2), two equivalent Tm(3), four equivalent Tm(4), and two equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 10-coordinate geometry to two equivalent Tm(2), two equivalent Tm(4), two equivalent Fe(1), and four equivalent Fe(2) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to one Tm(1), two equivalent Tm(3), two equivalent Tm(4), and four equivalent Fe(2) atoms. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to one Tm(2), one Tm(3), three equivalent Tm(4), and four equivalent Fe(2) atoms. is represented by the CIF file [CIF]
data_Tm9(FeGe)10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.023
_cell_length_b   10.022
_cell_length_c   10.022
_cell_angle_alpha   148.811
_cell_angle_beta   96.858
_cell_angle_gamma   91.434
_symmetry_Int_Tables_number   1
_cell_volume   501.522
_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
  Tm  Tm0  1  0.500  1.000  0.500  1.0
  Tm  Tm1  1  0.784  1.000  0.784  1.0
  Tm  Tm2  1  0.216  0.000  0.216  1.0
  Tm  Tm3  1  0.195  0.195  1.000  1.0
  Tm  Tm4  1  0.805  0.805  0.000  1.0
  Tm  Tm5  1  0.990  0.637  0.353  1.0
  Tm  Tm6  1  0.010  0.363  0.647  1.0
  Tm  Tm7  1  0.717  0.363  0.353  1.0
  Tm  Tm8  1  0.283  0.637  0.647  1.0
  Fe  Fe9  1  0.406  0.406  0.000  1.0
  Fe  Fe10  1  0.594  0.594  1.000  1.0
  Fe  Fe11  1  0.202  0.101  0.611  1.0
  Fe  Fe12  1  0.798  0.409  0.899  1.0
  Fe  Fe13  1  0.509  0.899  0.101  1.0
  Fe  Fe14  1  0.491  0.592  0.389  1.0
  Fe  Fe15  1  0.798  0.899  0.389  1.0
  Fe  Fe16  1  0.202  0.591  0.101  1.0
  Fe  Fe17  1  0.491  0.101  0.899  1.0
  Fe  Fe18  1  0.509  0.409  0.611  1.0
  Ge  Ge19  1  1.000  0.749  0.749  1.0
  Ge  Ge20  1  0.000  0.251  0.251  1.0
  Ge  Ge21  1  0.672  0.500  0.172  1.0
  Ge  Ge22  1  0.328  0.500  0.828  1.0
  Ge  Ge23  1  0.290  0.790  0.500  1.0
  Ge  Ge24  1  0.710  0.210  0.500  1.0
  Ge  Ge25  1  0.992  0.203  0.790  1.0
  Ge  Ge26  1  0.008  0.797  0.210  1.0
  Ge  Ge27  1  0.587  0.797  0.790  1.0
  Ge  Ge28  1  0.413  0.203  0.210  1.0
[/CIF]
.