The structure described by GdCu5Te4 crystallizes in the monoclinic C2/m space group. Gd(1) is bonded to two equivalent Te(2) and four equivalent Te(1) atoms to form GdTe6 octahedra that share corners with two equivalent Cu(2)Te4 tetrahedra, corners with ten equivalent Cu(3)Te4 tetrahedra, edges with two equivalent Gd(1)Te6 octahedra, edges with four equivalent Cu(1)Te6 octahedra, edges with two equivalent Cu(3)Te4 tetrahedra, and edges with four equivalent Cu(2)Te4 tetrahedra. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent Te(1) and four equivalent Te(2) atoms to form CuTe6 octahedra that share corners with two equivalent Cu(3)Te4 tetrahedra, corners with ten equivalent Cu(2)Te4 tetrahedra, edges with two equivalent Cu(1)Te6 octahedra, edges with four equivalent Gd(1)Te6 octahedra, edges with two equivalent Cu(2)Te4 tetrahedra, and edges with four equivalent Cu(3)Te4 tetrahedra. In the second Cu site, Cu(2) is bonded to one Te(1) and three equivalent Te(2) atoms to form distorted CuTe4 tetrahedra that share  a cornercorner with one Gd(1)Te6 octahedra, corners with five equivalent Cu(1)Te6 octahedra, corners with two equivalent Cu(2)Te4 tetrahedra, corners with four equivalent Cu(3)Te4 tetrahedra,  an edgeedge with one Cu(1)Te6 octahedra, edges with two equivalent Gd(1)Te6 octahedra,  an edgeedge with one Cu(3)Te4 tetrahedra, and edges with two equivalent Cu(2)Te4 tetrahedra. The corner-sharing octahedral tilt angles range from 12-56°. In the third Cu site, Cu(3) is bonded to one Te(2) and three equivalent Te(1) atoms to form distorted CuTe4 tetrahedra that share  a cornercorner with one Cu(1)Te6 octahedra, corners with five equivalent Gd(1)Te6 octahedra, corners with two equivalent Cu(3)Te4 tetrahedra, corners with four equivalent Cu(2)Te4 tetrahedra,  an edgeedge with one Gd(1)Te6 octahedra, edges with two equivalent Cu(1)Te6 octahedra,  an edgeedge with one Cu(2)Te4 tetrahedra, and edges with two equivalent Cu(3)Te4 tetrahedra. The corner-sharing octahedral tilt angles range from 8-57°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Gd(1), one Cu(1), one Cu(2), and three equivalent Cu(3) atoms to form distorted TeGd2Cu5 pentagonal bipyramids that share corners with three equivalent Te(1)Gd2Cu5 pentagonal bipyramids, edges with five equivalent Te(1)Gd2Cu5 pentagonal bipyramids, and edges with seven equivalent Te(2)GdCu6 pentagonal bipyramids. In the second Te site, Te(2) is bonded to one Gd(1), one Cu(3), two equivalent Cu(1), and three equivalent Cu(2) atoms to form distorted TeGdCu6 pentagonal bipyramids that share corners with three equivalent Te(2)GdCu6 pentagonal bipyramids, edges with five equivalent Te(2)GdCu6 pentagonal bipyramids, and edges with seven equivalent Te(1)Gd2Cu5 pentagonal bipyramids. is represented by the CIF card [CIF]
data_GdCu5Te4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.210
_cell_length_b   8.210
_cell_length_c   7.360
_cell_angle_alpha   65.066
_cell_angle_beta   65.066
_cell_angle_gamma   30.335
_symmetry_Int_Tables_number   1
_cell_volume   225.411
_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  0.500  0.500  0.500  1.0
  Cu  Cu1  1  0.000  0.000  0.000  1.0
  Cu  Cu2  1  0.194  0.194  0.145  1.0
  Cu  Cu3  1  0.695  0.695  0.641  1.0
  Cu  Cu4  1  0.806  0.806  0.855  1.0
  Cu  Cu5  1  0.305  0.305  0.359  1.0
  Te  Te6  1  0.876  0.876  0.445  1.0
  Te  Te7  1  0.382  0.382  0.963  1.0
  Te  Te8  1  0.124  0.124  0.555  1.0
  Te  Te9  1  0.618  0.618  0.037  1.0
[/CIF]
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The structure described by GdCu5Te4 crystallizes in the monoclinic C2/m space group. Gd(1) is bonded to two equivalent Te(2) and four equivalent Te(1) atoms to form GdTe6 octahedra that share corners with two equivalent Cu(2)Te4 tetrahedra, corners with ten equivalent Cu(3)Te4 tetrahedra, edges with two equivalent Gd(1)Te6 octahedra, edges with four equivalent Cu(1)Te6 octahedra, edges with two equivalent Cu(3)Te4 tetrahedra, and edges with four equivalent Cu(2)Te4 tetrahedra. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent Te(1) and four equivalent Te(2) atoms to form CuTe6 octahedra that share corners with two equivalent Cu(3)Te4 tetrahedra, corners with ten equivalent Cu(2)Te4 tetrahedra, edges with two equivalent Cu(1)Te6 octahedra, edges with four equivalent Gd(1)Te6 octahedra, edges with two equivalent Cu(2)Te4 tetrahedra, and edges with four equivalent Cu(3)Te4 tetrahedra. In the second Cu site, Cu(2) is bonded to one Te(1) and three equivalent Te(2) atoms to form distorted CuTe4 tetrahedra that share  a cornercorner with one Gd(1)Te6 octahedra, corners with five equivalent Cu(1)Te6 octahedra, corners with two equivalent Cu(2)Te4 tetrahedra, corners with four equivalent Cu(3)Te4 tetrahedra,  an edgeedge with one Cu(1)Te6 octahedra, edges with two equivalent Gd(1)Te6 octahedra,  an edgeedge with one Cu(3)Te4 tetrahedra, and edges with two equivalent Cu(2)Te4 tetrahedra. The corner-sharing octahedral tilt angles range from 12-56°. In the third Cu site, Cu(3) is bonded to one Te(2) and three equivalent Te(1) atoms to form distorted CuTe4 tetrahedra that share  a cornercorner with one Cu(1)Te6 octahedra, corners with five equivalent Gd(1)Te6 octahedra, corners with two equivalent Cu(3)Te4 tetrahedra, corners with four equivalent Cu(2)Te4 tetrahedra,  an edgeedge with one Gd(1)Te6 octahedra, edges with two equivalent Cu(1)Te6 octahedra,  an edgeedge with one Cu(2)Te4 tetrahedra, and edges with two equivalent Cu(3)Te4 tetrahedra. The corner-sharing octahedral tilt angles range from 8-57°. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded to two equivalent Gd(1), one Cu(1), one Cu(2), and three equivalent Cu(3) atoms to form distorted TeGd2Cu5 pentagonal bipyramids that share corners with three equivalent Te(1)Gd2Cu5 pentagonal bipyramids, edges with five equivalent Te(1)Gd2Cu5 pentagonal bipyramids, and edges with seven equivalent Te(2)GdCu6 pentagonal bipyramids. In the second Te site, Te(2) is bonded to one Gd(1), one Cu(3), two equivalent Cu(1), and three equivalent Cu(2) atoms to form distorted TeGdCu6 pentagonal bipyramids that share corners with three equivalent Te(2)GdCu6 pentagonal bipyramids, edges with five equivalent Te(2)GdCu6 pentagonal bipyramids, and edges with seven equivalent Te(1)Gd2Cu5 pentagonal bipyramids. is represented by the CIF card [CIF]
data_GdCu5Te4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.210
_cell_length_b   8.210
_cell_length_c   7.360
_cell_angle_alpha   65.066
_cell_angle_beta   65.066
_cell_angle_gamma   30.335
_symmetry_Int_Tables_number   1
_cell_volume   225.411
_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  0.500  0.500  0.500  1.0
  Cu  Cu1  1  0.000  0.000  0.000  1.0
  Cu  Cu2  1  0.194  0.194  0.145  1.0
  Cu  Cu3  1  0.695  0.695  0.641  1.0
  Cu  Cu4  1  0.806  0.806  0.855  1.0
  Cu  Cu5  1  0.305  0.305  0.359  1.0
  Te  Te6  1  0.876  0.876  0.445  1.0
  Te  Te7  1  0.382  0.382  0.963  1.0
  Te  Te8  1  0.124  0.124  0.555  1.0
  Te  Te9  1  0.618  0.618  0.037  1.0
[/CIF]
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