The crystal structure described by Tb4FeGe8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(6), and four equivalent Ge(7) atoms. In the second Tb site, Tb(2) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(4), two equivalent Ge(5), and four equivalent Ge(8) atoms. In the third Tb site, Tb(3) is bonded in a 14-coordinate geometry to four equivalent Fe(1), two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(8), and four equivalent Ge(5) atoms. In the fourth Tb site, Tb(4) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(4), two equivalent Ge(7), and four equivalent Ge(6) atoms. Fe(1) is bonded in a 5-coordinate geometry to four equivalent Tb(3), one Ge(5), two equivalent Ge(1), and two equivalent Ge(3) atoms. There are eight inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Tb(1), two equivalent Tb(3), two equivalent Fe(1), and four equivalent Ge(3) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Tb(2), two equivalent Tb(4), and four equivalent Ge(4) atoms. In the third Ge site, Ge(3) is bonded in a 4-coordinate geometry to two equivalent Tb(1), two equivalent Tb(3), two equivalent Fe(1), and four equivalent Ge(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to two equivalent Tb(2), two equivalent Tb(4), and four equivalent Ge(2) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(3), one Fe(1), and two equivalent Ge(8) atoms. In the sixth Ge site, Ge(6) is bonded in a 8-coordinate geometry to two equivalent Tb(1), four equivalent Tb(4), and two equivalent Ge(7) atoms. In the seventh Ge site, Ge(7) is bonded in a 8-coordinate geometry to two equivalent Tb(4), four equivalent Tb(1), and two equivalent Ge(6) atoms. In the eighth Ge site, Ge(8) is bonded in a 8-coordinate geometry to two equivalent Tb(3), four equivalent Tb(2), and two equivalent Ge(5) atoms. is represented by the CIF card [CIF]
data_Tb4FeGe8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.997
_cell_length_b   4.157
_cell_length_c   16.008
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   265.940
_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  0.250  0.000  0.398  1.0
  Tb  Tb1  1  0.250  0.500  0.895  1.0
  Tb  Tb2  1  0.750  0.500  0.103  1.0
  Tb  Tb3  1  0.750  0.000  0.604  1.0
  Fe  Fe4  1  0.250  0.000  0.190  1.0
  Ge  Ge5  1  0.250  0.500  0.259  1.0
  Ge  Ge6  1  0.250  0.000  0.752  1.0
  Ge  Ge7  1  0.750  0.000  0.260  1.0
  Ge  Ge8  1  0.750  0.500  0.748  1.0
  Ge  Ge9  1  0.250  0.000  0.046  1.0
  Ge  Ge10  1  0.250  0.500  0.552  1.0
  Ge  Ge11  1  0.750  0.500  0.446  1.0
  Ge  Ge12  1  0.750  0.000  0.944  1.0
[/CIF]
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The crystal structure described by Tb4FeGe8 crystallizes in the orthorhombic Pmm2 space group. There are four inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 10-coordinate geometry to two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(6), and four equivalent Ge(7) atoms. In the second Tb site, Tb(2) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(4), two equivalent Ge(5), and four equivalent Ge(8) atoms. In the third Tb site, Tb(3) is bonded in a 14-coordinate geometry to four equivalent Fe(1), two equivalent Ge(1), two equivalent Ge(3), two equivalent Ge(8), and four equivalent Ge(5) atoms. In the fourth Tb site, Tb(4) is bonded in a 10-coordinate geometry to two equivalent Ge(2), two equivalent Ge(4), two equivalent Ge(7), and four equivalent Ge(6) atoms. Fe(1) is bonded in a 5-coordinate geometry to four equivalent Tb(3), one Ge(5), two equivalent Ge(1), and two equivalent Ge(3) atoms. There are eight inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 10-coordinate geometry to two equivalent Tb(1), two equivalent Tb(3), two equivalent Fe(1), and four equivalent Ge(3) atoms. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to two equivalent Tb(2), two equivalent Tb(4), and four equivalent Ge(4) atoms. In the third Ge site, Ge(3) is bonded in a 4-coordinate geometry to two equivalent Tb(1), two equivalent Tb(3), two equivalent Fe(1), and four equivalent Ge(1) atoms. In the fourth Ge site, Ge(4) is bonded in a 8-coordinate geometry to two equivalent Tb(2), two equivalent Tb(4), and four equivalent Ge(2) atoms. In the fifth Ge site, Ge(5) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(3), one Fe(1), and two equivalent Ge(8) atoms. In the sixth Ge site, Ge(6) is bonded in a 8-coordinate geometry to two equivalent Tb(1), four equivalent Tb(4), and two equivalent Ge(7) atoms. In the seventh Ge site, Ge(7) is bonded in a 8-coordinate geometry to two equivalent Tb(4), four equivalent Tb(1), and two equivalent Ge(6) atoms. In the eighth Ge site, Ge(8) is bonded in a 8-coordinate geometry to two equivalent Tb(3), four equivalent Tb(2), and two equivalent Ge(5) atoms. is represented by the CIF card [CIF]
data_Tb4FeGe8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.997
_cell_length_b   4.157
_cell_length_c   16.008
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   265.940
_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  0.250  0.000  0.398  1.0
  Tb  Tb1  1  0.250  0.500  0.895  1.0
  Tb  Tb2  1  0.750  0.500  0.103  1.0
  Tb  Tb3  1  0.750  0.000  0.604  1.0
  Fe  Fe4  1  0.250  0.000  0.190  1.0
  Ge  Ge5  1  0.250  0.500  0.259  1.0
  Ge  Ge6  1  0.250  0.000  0.752  1.0
  Ge  Ge7  1  0.750  0.000  0.260  1.0
  Ge  Ge8  1  0.750  0.500  0.748  1.0
  Ge  Ge9  1  0.250  0.000  0.046  1.0
  Ge  Ge10  1  0.250  0.500  0.552  1.0
  Ge  Ge11  1  0.750  0.500  0.446  1.0
  Ge  Ge12  1  0.750  0.000  0.944  1.0
[/CIF]
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