The material described by Er5Bi3 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to two equivalent Bi(1) and three equivalent Bi(2) atoms. In the second Er site, Er(2) is bonded in a 6-coordinate geometry to two equivalent Bi(1) and four equivalent Bi(2) atoms. In the third Er site, Er(3) is bonded to one Bi(1) and four equivalent Bi(2) atoms to form distorted edge-sharing ErBi5 square pyramids. In the fourth Er site, Er(4) is bonded in a 5-coordinate geometry to one Bi(1) and four equivalent Bi(2) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 8-coordinate geometry to one Er(3), one Er(4), two equivalent Er(2), and four equivalent Er(1) atoms. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to two equivalent Er(2), two equivalent Er(3), two equivalent Er(4), and three equivalent Er(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er5Bi3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.200
_cell_length_b   9.353
_cell_length_c   11.895
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   912.301
_cell_formula_units_Z   4
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  0.689  0.936  0.435  1.0
  Er  Er1  1  0.811  0.564  0.935  1.0
  Er  Er2  1  0.311  0.436  0.565  1.0
  Er  Er3  1  0.189  0.064  0.065  1.0
  Er  Er4  1  0.311  0.064  0.565  1.0
  Er  Er5  1  0.189  0.436  0.065  1.0
  Er  Er6  1  0.689  0.564  0.435  1.0
  Er  Er7  1  0.811  0.936  0.935  1.0
  Er  Er8  1  0.328  0.750  0.273  1.0
  Er  Er9  1  0.172  0.750  0.773  1.0
  Er  Er10  1  0.672  0.250  0.727  1.0
  Er  Er11  1  0.828  0.250  0.227  1.0
  Er  Er12  1  0.020  0.750  0.495  1.0
  Er  Er13  1  0.480  0.750  0.995  1.0
  Er  Er14  1  0.980  0.250  0.505  1.0
  Er  Er15  1  0.520  0.250  0.005  1.0
  Er  Er16  1  0.840  0.750  0.209  1.0
  Er  Er17  1  0.660  0.750  0.709  1.0
  Er  Er18  1  0.160  0.250  0.791  1.0
  Er  Er19  1  0.340  0.250  0.291  1.0
  Bi  Bi20  1  0.101  0.750  0.028  1.0
  Bi  Bi21  1  0.399  0.750  0.528  1.0
  Bi  Bi22  1  0.898  0.250  0.972  1.0
  Bi  Bi23  1  0.602  0.250  0.472  1.0
  Bi  Bi24  1  0.562  0.992  0.175  1.0
  Bi  Bi25  1  0.938  0.508  0.675  1.0
  Bi  Bi26  1  0.438  0.492  0.825  1.0
  Bi  Bi27  1  0.062  0.008  0.325  1.0
  Bi  Bi28  1  0.438  0.008  0.825  1.0
  Bi  Bi29  1  0.062  0.492  0.325  1.0
  Bi  Bi30  1  0.562  0.508  0.175  1.0
  Bi  Bi31  1  0.938  0.992  0.675  1.0
[/CIF]
.
The material described by Er5Bi3 crystallizes in the orthorhombic Pnma space group. There are four inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to two equivalent Bi(1) and three equivalent Bi(2) atoms. In the second Er site, Er(2) is bonded in a 6-coordinate geometry to two equivalent Bi(1) and four equivalent Bi(2) atoms. In the third Er site, Er(3) is bonded to one Bi(1) and four equivalent Bi(2) atoms to form distorted edge-sharing ErBi5 square pyramids. In the fourth Er site, Er(4) is bonded in a 5-coordinate geometry to one Bi(1) and four equivalent Bi(2) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a 8-coordinate geometry to one Er(3), one Er(4), two equivalent Er(2), and four equivalent Er(1) atoms. In the second Bi site, Bi(2) is bonded in a 9-coordinate geometry to two equivalent Er(2), two equivalent Er(3), two equivalent Er(4), and three equivalent Er(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er5Bi3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.200
_cell_length_b   9.353
_cell_length_c   11.895
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   912.301
_cell_formula_units_Z   4
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  0.689  0.936  0.435  1.0
  Er  Er1  1  0.811  0.564  0.935  1.0
  Er  Er2  1  0.311  0.436  0.565  1.0
  Er  Er3  1  0.189  0.064  0.065  1.0
  Er  Er4  1  0.311  0.064  0.565  1.0
  Er  Er5  1  0.189  0.436  0.065  1.0
  Er  Er6  1  0.689  0.564  0.435  1.0
  Er  Er7  1  0.811  0.936  0.935  1.0
  Er  Er8  1  0.328  0.750  0.273  1.0
  Er  Er9  1  0.172  0.750  0.773  1.0
  Er  Er10  1  0.672  0.250  0.727  1.0
  Er  Er11  1  0.828  0.250  0.227  1.0
  Er  Er12  1  0.020  0.750  0.495  1.0
  Er  Er13  1  0.480  0.750  0.995  1.0
  Er  Er14  1  0.980  0.250  0.505  1.0
  Er  Er15  1  0.520  0.250  0.005  1.0
  Er  Er16  1  0.840  0.750  0.209  1.0
  Er  Er17  1  0.660  0.750  0.709  1.0
  Er  Er18  1  0.160  0.250  0.791  1.0
  Er  Er19  1  0.340  0.250  0.291  1.0
  Bi  Bi20  1  0.101  0.750  0.028  1.0
  Bi  Bi21  1  0.399  0.750  0.528  1.0
  Bi  Bi22  1  0.898  0.250  0.972  1.0
  Bi  Bi23  1  0.602  0.250  0.472  1.0
  Bi  Bi24  1  0.562  0.992  0.175  1.0
  Bi  Bi25  1  0.938  0.508  0.675  1.0
  Bi  Bi26  1  0.438  0.492  0.825  1.0
  Bi  Bi27  1  0.062  0.008  0.325  1.0
  Bi  Bi28  1  0.438  0.008  0.825  1.0
  Bi  Bi29  1  0.062  0.492  0.325  1.0
  Bi  Bi30  1  0.562  0.508  0.175  1.0
  Bi  Bi31  1  0.938  0.992  0.675  1.0
[/CIF]
.