The material described by Er3Ho9(MnBi2)2 crystallizes in the monoclinic Pm space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to one Mn(2); two equivalent Bi(1,3); and two equivalent Bi(2,4) atoms. In the second Er site, Er(2) is bonded in a 5-coordinate geometry to one Mn(1); two equivalent Bi(1,3); and two equivalent Bi(2,4) atoms. In the third Er site, Er(3) is bonded in a 5-coordinate geometry to one Mn(1) and four equivalent Bi(1,3) atoms. There are nine inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 5-coordinate geometry to one Mn(2) and four equivalent Bi(2,4) atoms. In the second Ho site, Ho(2) is bonded in a 5-coordinate geometry to one Mn(2) and four equivalent Bi(1,3) atoms. In the third Ho site, Ho(3) is bonded in a 5-coordinate geometry to one Mn(1) and four equivalent Bi(2,4) atoms. In the fourth Ho site, Ho(4) is bonded in a 4-coordinate geometry to two equivalent Mn(1); one Bi(1,3); and one Bi(2,4) atom. In the fifth Ho site, Ho(5) is bonded to two equivalent Mn(2); one Bi(1,3); and one Bi(2,4) atom to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. In the sixth Ho site, Ho(6) is bonded to two equivalent Mn(2) and two equivalent Bi(1,3) atoms to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. In the seventh Ho site, Ho(7) is bonded to two equivalent Mn(1) and two equivalent Bi(2,4) atoms to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. In the eighth Ho site, Ho(8) is bonded to two equivalent Mn(1) and two equivalent Bi(1,3) atoms to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. In the ninth Ho site, Ho(9) is bonded to two equivalent Mn(2) and two equivalent Bi(2,4) atoms to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 9-coordinate geometry to one Er(2), one Er(3), one Ho(3), two equivalent Ho(4), two equivalent Ho(7), and two equivalent Ho(8) atoms. In the second Mn site, Mn(2) is bonded in a 9-coordinate geometry to one Er(1), one Ho(1), one Ho(2), two equivalent Ho(5), two equivalent Ho(6), and two equivalent Ho(9) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1,3) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Er(3), one Ho(5), one Ho(6), one Ho(8), and two equivalent Ho(2) atoms. In the second Bi site, Bi(2,4) is bonded in a 9-coordinate geometry to two equivalent Er(2), one Ho(4), one Ho(7), one Ho(9), two equivalent Ho(1), and two equivalent Ho(3) atoms. is represented by the CIF file [CIF]
data_Ho9Er3(MnBi2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.281
_cell_length_b   8.241
_cell_length_c   14.269
_cell_angle_alpha   90.003
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   503.458
_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
  Ho  Ho0  1  0.500  0.696  0.696  1.0
  Ho  Ho1  1  0.500  0.696  0.304  1.0
  Ho  Ho2  1  0.500  0.196  0.804  1.0
  Ho  Ho3  1  0.000  0.234  0.000  1.0
  Ho  Ho4  1  0.000  0.734  0.500  1.0
  Ho  Ho5  1  0.000  0.383  0.384  1.0
  Ho  Ho6  1  0.000  0.883  0.884  1.0
  Ho  Ho7  1  0.000  0.883  0.117  1.0
  Ho  Ho8  1  0.000  0.383  0.616  1.0
  Er  Er9  1  0.500  0.108  0.500  1.0
  Er  Er10  1  0.500  0.608  1.000  1.0
  Er  Er11  1  0.500  0.196  0.196  1.0
  Mn  Mn12  1  0.500  1.000  0.000  1.0
  Mn  Mn13  1  0.500  0.500  0.500  1.0
  Bi  Bi14  1  0.000  0.000  0.333  1.0
  Bi  Bi15  1  0.000  0.500  0.833  1.0
  Bi  Bi16  1  0.000  0.500  0.167  1.0
  Bi  Bi17  1  0.000  0.000  0.667  1.0
[/CIF]
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The material described by Er3Ho9(MnBi2)2 crystallizes in the monoclinic Pm space group. There are three inequivalent Er sites. In the first Er site, Er(1) is bonded in a 5-coordinate geometry to one Mn(2); two equivalent Bi(1,3); and two equivalent Bi(2,4) atoms. In the second Er site, Er(2) is bonded in a 5-coordinate geometry to one Mn(1); two equivalent Bi(1,3); and two equivalent Bi(2,4) atoms. In the third Er site, Er(3) is bonded in a 5-coordinate geometry to one Mn(1) and four equivalent Bi(1,3) atoms. There are nine inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 5-coordinate geometry to one Mn(2) and four equivalent Bi(2,4) atoms. In the second Ho site, Ho(2) is bonded in a 5-coordinate geometry to one Mn(2) and four equivalent Bi(1,3) atoms. In the third Ho site, Ho(3) is bonded in a 5-coordinate geometry to one Mn(1) and four equivalent Bi(2,4) atoms. In the fourth Ho site, Ho(4) is bonded in a 4-coordinate geometry to two equivalent Mn(1); one Bi(1,3); and one Bi(2,4) atom. In the fifth Ho site, Ho(5) is bonded to two equivalent Mn(2); one Bi(1,3); and one Bi(2,4) atom to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. In the sixth Ho site, Ho(6) is bonded to two equivalent Mn(2) and two equivalent Bi(1,3) atoms to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. In the seventh Ho site, Ho(7) is bonded to two equivalent Mn(1) and two equivalent Bi(2,4) atoms to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. In the eighth Ho site, Ho(8) is bonded to two equivalent Mn(1) and two equivalent Bi(1,3) atoms to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. In the ninth Ho site, Ho(9) is bonded to two equivalent Mn(2) and two equivalent Bi(2,4) atoms to form a mixture of distorted corner and edge-sharing HoMn2Bi2 tetrahedra. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a 9-coordinate geometry to one Er(2), one Er(3), one Ho(3), two equivalent Ho(4), two equivalent Ho(7), and two equivalent Ho(8) atoms. In the second Mn site, Mn(2) is bonded in a 9-coordinate geometry to one Er(1), one Ho(1), one Ho(2), two equivalent Ho(5), two equivalent Ho(6), and two equivalent Ho(9) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1,3) is bonded in a 9-coordinate geometry to two equivalent Er(1), two equivalent Er(3), one Ho(5), one Ho(6), one Ho(8), and two equivalent Ho(2) atoms. In the second Bi site, Bi(2,4) is bonded in a 9-coordinate geometry to two equivalent Er(2), one Ho(4), one Ho(7), one Ho(9), two equivalent Ho(1), and two equivalent Ho(3) atoms. is represented by the CIF file [CIF]
data_Ho9Er3(MnBi2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.281
_cell_length_b   8.241
_cell_length_c   14.269
_cell_angle_alpha   90.003
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   503.458
_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
  Ho  Ho0  1  0.500  0.696  0.696  1.0
  Ho  Ho1  1  0.500  0.696  0.304  1.0
  Ho  Ho2  1  0.500  0.196  0.804  1.0
  Ho  Ho3  1  0.000  0.234  0.000  1.0
  Ho  Ho4  1  0.000  0.734  0.500  1.0
  Ho  Ho5  1  0.000  0.383  0.384  1.0
  Ho  Ho6  1  0.000  0.883  0.884  1.0
  Ho  Ho7  1  0.000  0.883  0.117  1.0
  Ho  Ho8  1  0.000  0.383  0.616  1.0
  Er  Er9  1  0.500  0.108  0.500  1.0
  Er  Er10  1  0.500  0.608  1.000  1.0
  Er  Er11  1  0.500  0.196  0.196  1.0
  Mn  Mn12  1  0.500  1.000  0.000  1.0
  Mn  Mn13  1  0.500  0.500  0.500  1.0
  Bi  Bi14  1  0.000  0.000  0.333  1.0
  Bi  Bi15  1  0.000  0.500  0.833  1.0
  Bi  Bi16  1  0.000  0.500  0.167  1.0
  Bi  Bi17  1  0.000  0.000  0.667  1.0
[/CIF]
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