The crystal structure described by Tb3Cu4Ge4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the second Tb site, Tb(2) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form distorted edge-sharing TbGe6 octahedra. Cu(1) is bonded in a 8-coordinate geometry to three equivalent Tb(1), one Cu(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Tb(2), two equivalent Tb(1), and six equivalent Cu(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(1), two equivalent Cu(1), and one Ge(2) atom. is represented by the CIF file [CIF]
data_Tb3(CuGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.193
_cell_length_b   6.614
_cell_length_c   7.972
_cell_angle_alpha   114.508
_cell_angle_beta   105.246
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   192.537
_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  0.869  0.869  0.737  1.0
  Tb  Tb1  1  0.131  0.131  0.263  1.0
  Tb  Tb2  1  0.000  0.500  0.000  1.0
  Cu  Cu3  1  0.668  0.857  0.337  1.0
  Cu  Cu4  1  0.332  0.143  0.663  1.0
  Cu  Cu5  1  0.668  0.480  0.337  1.0
  Cu  Cu6  1  0.332  0.520  0.663  1.0
  Ge  Ge7  1  0.783  0.283  0.567  1.0
  Ge  Ge8  1  0.500  0.809  0.000  1.0
  Ge  Ge9  1  0.500  0.191  0.000  1.0
  Ge  Ge10  1  0.217  0.717  0.433  1.0
[/CIF]
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The crystal structure described by Tb3Cu4Ge4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Tb sites. In the first Tb site, Tb(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(1), and four equivalent Ge(2) atoms. In the second Tb site, Tb(2) is bonded to two equivalent Ge(1) and four equivalent Ge(2) atoms to form distorted edge-sharing TbGe6 octahedra. Cu(1) is bonded in a 8-coordinate geometry to three equivalent Tb(1), one Cu(1), one Ge(2), and three equivalent Ge(1) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Tb(2), two equivalent Tb(1), and six equivalent Cu(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Tb(2), four equivalent Tb(1), two equivalent Cu(1), and one Ge(2) atom. is represented by the CIF file [CIF]
data_Tb3(CuGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.193
_cell_length_b   6.614
_cell_length_c   7.972
_cell_angle_alpha   114.508
_cell_angle_beta   105.246
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   192.537
_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  0.869  0.869  0.737  1.0
  Tb  Tb1  1  0.131  0.131  0.263  1.0
  Tb  Tb2  1  0.000  0.500  0.000  1.0
  Cu  Cu3  1  0.668  0.857  0.337  1.0
  Cu  Cu4  1  0.332  0.143  0.663  1.0
  Cu  Cu5  1  0.668  0.480  0.337  1.0
  Cu  Cu6  1  0.332  0.520  0.663  1.0
  Ge  Ge7  1  0.783  0.283  0.567  1.0
  Ge  Ge8  1  0.500  0.809  0.000  1.0
  Ge  Ge9  1  0.500  0.191  0.000  1.0
  Ge  Ge10  1  0.217  0.717  0.433  1.0
[/CIF]
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