The material described by Gd3Cu2Te7 crystallizes in the orthorhombic Ama2 space group. There are three inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 9-coordinate geometry to one Cu(1), one Te(2), one Te(3), two equivalent Te(1), two equivalent Te(5), and two equivalent Te(6) atoms. In the second Gd site, Gd(2) is bonded in a 10-coordinate geometry to one Cu(1), one Cu(2), one Te(1), one Te(2), two equivalent Te(3), two equivalent Te(4), and two equivalent Te(6) atoms. In the third Gd site, Gd(3) is bonded in a 9-coordinate geometry to one Cu(1), one Te(1), one Te(3), two equivalent Te(2), two equivalent Te(4), and two equivalent Te(5) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 4-coordinate geometry to one Gd(1), one Gd(2), one Gd(3), one Te(2), one Te(3), and two equivalent Te(4) atoms. In the second Cu site, Cu(2) is bonded in a 4-coordinate geometry to one Gd(2), one Te(1), one Te(2), and two equivalent Te(4) atoms. There are six inequivalent Te sites. In the first Te site, Te(6) is bonded in a 6-coordinate geometry to two equivalent Gd(1), two equivalent Gd(2), and two equivalent Te(6) atoms. In the second Te site, Te(1) is bonded to one Gd(2), one Gd(3), two equivalent Gd(1), and one Cu(2) atom to form TeGd4Cu trigonal bipyramids that share  a cornercorner with one Te(3)Gd4Cu trigonal bipyramid, corners with two equivalent Te(1)Gd4Cu trigonal bipyramids, edges with three equivalent Te(2)Gd4Cu2 pentagonal pyramids, and edges with two equivalent Te(3)Gd4Cu trigonal bipyramids. In the third Te site, Te(2) is bonded to one Gd(1), one Gd(2), two equivalent Gd(3), one Cu(1), and one Cu(2) atom to form distorted TeGd4Cu2 pentagonal pyramids that share corners with two equivalent Te(2)Gd4Cu2 pentagonal pyramids, edges with three equivalent Te(1)Gd4Cu trigonal bipyramids, and edges with three equivalent Te(3)Gd4Cu trigonal bipyramids. In the fourth Te site, Te(3) is bonded to one Gd(1), one Gd(3), two equivalent Gd(2), and one Cu(1) atom to form distorted TeGd4Cu trigonal bipyramids that share  a cornercorner with one Te(1)Gd4Cu trigonal bipyramid, corners with two equivalent Te(3)Gd4Cu trigonal bipyramids, edges with three equivalent Te(2)Gd4Cu2 pentagonal pyramids, and edges with two equivalent Te(1)Gd4Cu trigonal bipyramids. In the fifth Te site, Te(4) is bonded in a 4-coordinate geometry to one Gd(2), one Gd(3), one Cu(1), and one Cu(2) atom. In the sixth Te site, Te(5) is bonded in a 6-coordinate geometry to two equivalent Gd(1), two equivalent Gd(3), and two equivalent Te(5) atoms. is represented by the CIF card [CIF]
data_Gd3Cu2Te7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.200
_cell_length_b   11.260
_cell_length_c   11.260
_cell_angle_alpha   118.045
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   693.859
_cell_formula_units_Z   2
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  0.750  0.414  0.591  1.0
  Gd  Gd1  1  0.250  0.591  0.414  1.0
  Gd  Gd2  1  0.750  0.903  0.617  1.0
  Gd  Gd3  1  0.250  0.616  0.902  1.0
  Gd  Gd4  1  0.250  0.093  0.378  1.0
  Gd  Gd5  1  0.750  0.378  0.092  1.0
  Cu  Cu6  1  0.750  0.236  0.766  1.0
  Cu  Cu7  1  0.250  0.766  0.236  1.0
  Cu  Cu8  1  0.750  0.852  0.292  1.0
  Cu  Cu9  1  0.250  0.292  0.852  1.0
  Te  Te10  1  0.750  0.655  0.344  1.0
  Te  Te11  1  0.250  0.344  0.655  1.0
  Te  Te12  1  0.750  0.104  0.498  1.0
  Te  Te13  1  0.250  0.498  0.104  1.0
  Te  Te14  1  0.250  0.895  0.500  1.0
  Te  Te15  1  0.750  0.500  0.895  1.0
  Te  Te16  1  0.499  0.878  0.119  1.0
  Te  Te17  1  0.501  0.119  0.878  1.0
  Te  Te18  1  0.001  0.878  0.119  1.0
  Te  Te19  1  0.999  0.119  0.878  1.0
  Te  Te20  1  0.500  0.311  0.310  1.0
  Te  Te21  1  1.000  0.311  0.310  1.0
  Te  Te22  1  0.500  0.694  0.694  1.0
  Te  Te23  1  0.000  0.694  0.694  1.0
[/CIF]
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The material described by Gd3Cu2Te7 crystallizes in the orthorhombic Ama2 space group. There are three inequivalent Gd sites. In the first Gd site, Gd(1) is bonded in a 9-coordinate geometry to one Cu(1), one Te(2), one Te(3), two equivalent Te(1), two equivalent Te(5), and two equivalent Te(6) atoms. In the second Gd site, Gd(2) is bonded in a 10-coordinate geometry to one Cu(1), one Cu(2), one Te(1), one Te(2), two equivalent Te(3), two equivalent Te(4), and two equivalent Te(6) atoms. In the third Gd site, Gd(3) is bonded in a 9-coordinate geometry to one Cu(1), one Te(1), one Te(3), two equivalent Te(2), two equivalent Te(4), and two equivalent Te(5) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 4-coordinate geometry to one Gd(1), one Gd(2), one Gd(3), one Te(2), one Te(3), and two equivalent Te(4) atoms. In the second Cu site, Cu(2) is bonded in a 4-coordinate geometry to one Gd(2), one Te(1), one Te(2), and two equivalent Te(4) atoms. There are six inequivalent Te sites. In the first Te site, Te(6) is bonded in a 6-coordinate geometry to two equivalent Gd(1), two equivalent Gd(2), and two equivalent Te(6) atoms. In the second Te site, Te(1) is bonded to one Gd(2), one Gd(3), two equivalent Gd(1), and one Cu(2) atom to form TeGd4Cu trigonal bipyramids that share  a cornercorner with one Te(3)Gd4Cu trigonal bipyramid, corners with two equivalent Te(1)Gd4Cu trigonal bipyramids, edges with three equivalent Te(2)Gd4Cu2 pentagonal pyramids, and edges with two equivalent Te(3)Gd4Cu trigonal bipyramids. In the third Te site, Te(2) is bonded to one Gd(1), one Gd(2), two equivalent Gd(3), one Cu(1), and one Cu(2) atom to form distorted TeGd4Cu2 pentagonal pyramids that share corners with two equivalent Te(2)Gd4Cu2 pentagonal pyramids, edges with three equivalent Te(1)Gd4Cu trigonal bipyramids, and edges with three equivalent Te(3)Gd4Cu trigonal bipyramids. In the fourth Te site, Te(3) is bonded to one Gd(1), one Gd(3), two equivalent Gd(2), and one Cu(1) atom to form distorted TeGd4Cu trigonal bipyramids that share  a cornercorner with one Te(1)Gd4Cu trigonal bipyramid, corners with two equivalent Te(3)Gd4Cu trigonal bipyramids, edges with three equivalent Te(2)Gd4Cu2 pentagonal pyramids, and edges with two equivalent Te(1)Gd4Cu trigonal bipyramids. In the fifth Te site, Te(4) is bonded in a 4-coordinate geometry to one Gd(2), one Gd(3), one Cu(1), and one Cu(2) atom. In the sixth Te site, Te(5) is bonded in a 6-coordinate geometry to two equivalent Gd(1), two equivalent Gd(3), and two equivalent Te(5) atoms. is represented by the CIF card [CIF]
data_Gd3Cu2Te7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.200
_cell_length_b   11.260
_cell_length_c   11.260
_cell_angle_alpha   118.045
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   693.859
_cell_formula_units_Z   2
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  0.750  0.414  0.591  1.0
  Gd  Gd1  1  0.250  0.591  0.414  1.0
  Gd  Gd2  1  0.750  0.903  0.617  1.0
  Gd  Gd3  1  0.250  0.616  0.902  1.0
  Gd  Gd4  1  0.250  0.093  0.378  1.0
  Gd  Gd5  1  0.750  0.378  0.092  1.0
  Cu  Cu6  1  0.750  0.236  0.766  1.0
  Cu  Cu7  1  0.250  0.766  0.236  1.0
  Cu  Cu8  1  0.750  0.852  0.292  1.0
  Cu  Cu9  1  0.250  0.292  0.852  1.0
  Te  Te10  1  0.750  0.655  0.344  1.0
  Te  Te11  1  0.250  0.344  0.655  1.0
  Te  Te12  1  0.750  0.104  0.498  1.0
  Te  Te13  1  0.250  0.498  0.104  1.0
  Te  Te14  1  0.250  0.895  0.500  1.0
  Te  Te15  1  0.750  0.500  0.895  1.0
  Te  Te16  1  0.499  0.878  0.119  1.0
  Te  Te17  1  0.501  0.119  0.878  1.0
  Te  Te18  1  0.001  0.878  0.119  1.0
  Te  Te19  1  0.999  0.119  0.878  1.0
  Te  Te20  1  0.500  0.311  0.310  1.0
  Te  Te21  1  1.000  0.311  0.310  1.0
  Te  Te22  1  0.500  0.694  0.694  1.0
  Te  Te23  1  0.000  0.694  0.694  1.0
[/CIF]
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