The material structure described by Er7Au2Te2 crystallizes in the monoclinic C2/m space group. There are eight inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to two equivalent Au(2), one Te(1), and two equivalent Te(2) atoms. In the second Er site, Er(2) is bonded in a 4-coordinate geometry to two equivalent Au(2) and two equivalent Te(2) atoms. In the third Er site, Er(3) is bonded in a 3-coordinate geometry to one Au(1), two equivalent Au(2), and one Te(2) atom. In the fourth Er site, Er(4) is bonded in a 4-coordinate geometry to three equivalent Au(1) and two equivalent Te(1) atoms. In the fifth Er site, Er(5) is bonded in a 4-coordinate geometry to two equivalent Au(1) and two equivalent Te(1) atoms. In the sixth Er site, Er(6) is bonded in a 5-coordinate geometry to two equivalent Au(1), one Te(1), and two equivalent Te(2) atoms. In the seventh Er site, Er(7) is bonded in a square co-planar geometry to two equivalent Au(2) and two equivalent Te(2) atoms. In the eighth Er site, Er(8) is bonded in a square co-planar geometry to two equivalent Au(1) and two equivalent Te(1) atoms. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 9-coordinate geometry to one Er(3), one Er(8), two equivalent Er(5), two equivalent Er(6), and three equivalent Er(4) atoms. In the second Au site, Au(2) is bonded in a 7-coordinate geometry to one Er(7), two equivalent Er(1), two equivalent Er(2), and two equivalent Er(3) atoms. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 7-coordinate geometry to one Er(1), one Er(6), one Er(8), two equivalent Er(4), and two equivalent Er(5) atoms. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to one Er(3), one Er(7), two equivalent Er(1), two equivalent Er(2), and two equivalent Er(6) atoms. is represented by the CIF card [CIF]
data_Er7(TeAu)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.187
_cell_length_b   9.187
_cell_length_c   16.999
_cell_angle_alpha   76.066
_cell_angle_beta   76.066
_cell_angle_gamma   25.141
_symmetry_Int_Tables_number   1
_cell_volume   590.638
_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
  Er  Er0  1  0.001  0.001  0.666  1.0
  Er  Er1  1  0.999  0.999  0.334  1.0
  Er  Er2  1  0.174  0.174  0.472  1.0
  Er  Er3  1  0.826  0.826  0.528  1.0
  Er  Er4  1  0.191  0.191  0.680  1.0
  Er  Er5  1  0.809  0.809  0.320  1.0
  Er  Er6  1  0.338  0.338  0.983  1.0
  Er  Er7  1  0.662  0.662  0.017  1.0
  Er  Er8  1  0.575  0.575  0.830  1.0
  Er  Er9  1  0.425  0.425  0.170  1.0
  Er  Er10  1  0.779  0.779  0.807  1.0
  Er  Er11  1  0.221  0.221  0.193  1.0
  Er  Er12  1  0.500  0.500  0.500  1.0
  Er  Er13  1  0.000  0.000  0.000  1.0
  Te  Te14  1  0.066  0.066  0.150  1.0
  Te  Te15  1  0.934  0.934  0.850  1.0
  Te  Te16  1  0.366  0.366  0.661  1.0
  Te  Te17  1  0.634  0.634  0.339  1.0
  Au  Au18  1  0.170  0.170  0.888  1.0
  Au  Au19  1  0.830  0.830  0.112  1.0
  Au  Au20  1  0.383  0.383  0.398  1.0
  Au  Au21  1  0.617  0.617  0.602  1.0
[/CIF]
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The material structure described by Er7Au2Te2 crystallizes in the monoclinic C2/m space group. There are eight inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to two equivalent Au(2), one Te(1), and two equivalent Te(2) atoms. In the second Er site, Er(2) is bonded in a 4-coordinate geometry to two equivalent Au(2) and two equivalent Te(2) atoms. In the third Er site, Er(3) is bonded in a 3-coordinate geometry to one Au(1), two equivalent Au(2), and one Te(2) atom. In the fourth Er site, Er(4) is bonded in a 4-coordinate geometry to three equivalent Au(1) and two equivalent Te(1) atoms. In the fifth Er site, Er(5) is bonded in a 4-coordinate geometry to two equivalent Au(1) and two equivalent Te(1) atoms. In the sixth Er site, Er(6) is bonded in a 5-coordinate geometry to two equivalent Au(1), one Te(1), and two equivalent Te(2) atoms. In the seventh Er site, Er(7) is bonded in a square co-planar geometry to two equivalent Au(2) and two equivalent Te(2) atoms. In the eighth Er site, Er(8) is bonded in a square co-planar geometry to two equivalent Au(1) and two equivalent Te(1) atoms. There are two inequivalent Au sites. In the first Au site, Au(1) is bonded in a 9-coordinate geometry to one Er(3), one Er(8), two equivalent Er(5), two equivalent Er(6), and three equivalent Er(4) atoms. In the second Au site, Au(2) is bonded in a 7-coordinate geometry to one Er(7), two equivalent Er(1), two equivalent Er(2), and two equivalent Er(3) atoms. There are two inequivalent Te sites. In the first Te site, Te(1) is bonded in a 7-coordinate geometry to one Er(1), one Er(6), one Er(8), two equivalent Er(4), and two equivalent Er(5) atoms. In the second Te site, Te(2) is bonded in a 8-coordinate geometry to one Er(3), one Er(7), two equivalent Er(1), two equivalent Er(2), and two equivalent Er(6) atoms. is represented by the CIF card [CIF]
data_Er7(TeAu)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.187
_cell_length_b   9.187
_cell_length_c   16.999
_cell_angle_alpha   76.066
_cell_angle_beta   76.066
_cell_angle_gamma   25.141
_symmetry_Int_Tables_number   1
_cell_volume   590.638
_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
  Er  Er0  1  0.001  0.001  0.666  1.0
  Er  Er1  1  0.999  0.999  0.334  1.0
  Er  Er2  1  0.174  0.174  0.472  1.0
  Er  Er3  1  0.826  0.826  0.528  1.0
  Er  Er4  1  0.191  0.191  0.680  1.0
  Er  Er5  1  0.809  0.809  0.320  1.0
  Er  Er6  1  0.338  0.338  0.983  1.0
  Er  Er7  1  0.662  0.662  0.017  1.0
  Er  Er8  1  0.575  0.575  0.830  1.0
  Er  Er9  1  0.425  0.425  0.170  1.0
  Er  Er10  1  0.779  0.779  0.807  1.0
  Er  Er11  1  0.221  0.221  0.193  1.0
  Er  Er12  1  0.500  0.500  0.500  1.0
  Er  Er13  1  0.000  0.000  0.000  1.0
  Te  Te14  1  0.066  0.066  0.150  1.0
  Te  Te15  1  0.934  0.934  0.850  1.0
  Te  Te16  1  0.366  0.366  0.661  1.0
  Te  Te17  1  0.634  0.634  0.339  1.0
  Au  Au18  1  0.170  0.170  0.888  1.0
  Au  Au19  1  0.830  0.830  0.112  1.0
  Au  Au20  1  0.383  0.383  0.398  1.0
  Au  Au21  1  0.617  0.617  0.602  1.0
[/CIF]
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