The crystal structure described by Gd3Cu4Ge4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(2), and four equivalent Ge(1) atoms. In the second Gd site, Gd(2) is bonded to two equivalent Ge(2) and four equivalent Ge(1) atoms to form distorted edge-sharing GdGe6 octahedra. Cu(1) is bonded in a 8-coordinate geometry to three equivalent Gd(1), one Cu(1), one Ge(1), and three equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Gd(2), four equivalent Gd(1), two equivalent Cu(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Gd(2), two equivalent Gd(1), and six equivalent Cu(1) atoms. is represented by the CIF file [CIF]
data_Gd3(CuGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.226
_cell_length_b   6.638
_cell_length_c   8.017
_cell_angle_alpha   114.459
_cell_angle_beta   105.283
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   195.967
_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
  Gd  Gd0  1  0.131  0.132  0.263  1.0
  Gd  Gd1  1  0.000  0.500  0.000  1.0
  Gd  Gd2  1  0.869  0.868  0.737  1.0
  Cu  Cu3  1  0.332  0.144  0.663  1.0
  Cu  Cu4  1  0.668  0.856  0.337  1.0
  Cu  Cu5  1  0.668  0.480  0.336  1.0
  Cu  Cu6  1  0.332  0.520  0.664  1.0
  Ge  Ge7  1  0.500  0.810  0.000  1.0
  Ge  Ge8  1  0.783  0.283  0.567  1.0
  Ge  Ge9  1  0.217  0.717  0.433  1.0
  Ge  Ge10  1  0.500  0.190  1.000  1.0
[/CIF]
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The crystal structure described by Gd3Cu4Ge4 crystallizes in the orthorhombic Immm space group. There are two inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 12-coordinate geometry to six equivalent Cu(1), two equivalent Ge(2), and four equivalent Ge(1) atoms. In the second Gd site, Gd(2) is bonded to two equivalent Ge(2) and four equivalent Ge(1) atoms to form distorted edge-sharing GdGe6 octahedra. Cu(1) is bonded in a 8-coordinate geometry to three equivalent Gd(1), one Cu(1), one Ge(1), and three equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Gd(2), four equivalent Gd(1), two equivalent Cu(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Gd(2), two equivalent Gd(1), and six equivalent Cu(1) atoms. is represented by the CIF file [CIF]
data_Gd3(CuGe)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.226
_cell_length_b   6.638
_cell_length_c   8.017
_cell_angle_alpha   114.459
_cell_angle_beta   105.283
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   195.967
_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
  Gd  Gd0  1  0.131  0.132  0.263  1.0
  Gd  Gd1  1  0.000  0.500  0.000  1.0
  Gd  Gd2  1  0.869  0.868  0.737  1.0
  Cu  Cu3  1  0.332  0.144  0.663  1.0
  Cu  Cu4  1  0.668  0.856  0.337  1.0
  Cu  Cu5  1  0.668  0.480  0.336  1.0
  Cu  Cu6  1  0.332  0.520  0.664  1.0
  Ge  Ge7  1  0.500  0.810  0.000  1.0
  Ge  Ge8  1  0.783  0.283  0.567  1.0
  Ge  Ge9  1  0.217  0.717  0.433  1.0
  Ge  Ge10  1  0.500  0.190  1.000  1.0
[/CIF]
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