The material described by Ho2FeSbO7 crystallizes in the orthorhombic Imma space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. In the second Ho site, Ho(2) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(4), and four equivalent O(3) atoms. Fe(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra and corners with four equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-54°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-52°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ho(2) and two equivalent Fe(1) atoms to form distorted OHo2Fe2 tetrahedra that share corners with two equivalent O(4)Ho4 tetrahedra, corners with four equivalent O(1)Ho2Fe2 tetrahedra, corners with eight equivalent O(3)Ho2FeSb tetrahedra,  an edgeedge with one O(4)Ho4 tetrahedra, and edges with four equivalent O(3)Ho2FeSb tetrahedra. In the second O site, O(2) is bonded to two equivalent Ho(1) and two equivalent Sb(1) atoms to form distorted OHo2Sb2 tetrahedra that share corners with two equivalent O(4)Ho4 tetrahedra, corners with four equivalent O(2)Ho2Sb2 tetrahedra, corners with eight equivalent O(3)Ho2FeSb tetrahedra,  an edgeedge with one O(4)Ho4 tetrahedra, and edges with four equivalent O(3)Ho2FeSb tetrahedra. In the third O site, O(3) is bonded to one Ho(1), one Ho(2), one Fe(1), and one Sb(1) atom to form distorted OHo2FeSb tetrahedra that share corners with two equivalent O(1)Ho2Fe2 tetrahedra, corners with two equivalent O(2)Ho2Sb2 tetrahedra, corners with two equivalent O(4)Ho4 tetrahedra, corners with eight equivalent O(3)Ho2FeSb tetrahedra,  an edgeedge with one O(1)Ho2Fe2 tetrahedra,  an edgeedge with one O(2)Ho2Sb2 tetrahedra,  an edgeedge with one O(4)Ho4 tetrahedra, and edges with two equivalent O(3)Ho2FeSb tetrahedra. In the fourth O site, O(4) is bonded to two equivalent Ho(1) and two equivalent Ho(2) atoms to form OHo4 tetrahedra that share corners with two equivalent O(1)Ho2Fe2 tetrahedra, corners with two equivalent O(2)Ho2Sb2 tetrahedra, corners with four equivalent O(4)Ho4 tetrahedra, corners with eight equivalent O(3)Ho2FeSb tetrahedra,  an edgeedge with one O(1)Ho2Fe2 tetrahedra,  an edgeedge with one O(2)Ho2Sb2 tetrahedra, and edges with four equivalent O(3)Ho2FeSb tetrahedra. is represented by the CIF card [CIF]
data_Ho2FeSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.284
_cell_length_b   7.284
_cell_length_c   7.284
_cell_angle_alpha   120.433
_cell_angle_beta   119.435
_cell_angle_gamma   90.116
_symmetry_Int_Tables_number   1
_cell_volume   273.532
_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
  Ho  Ho0  1  0.500  0.000  0.000  1.0
  Ho  Ho1  1  0.500  0.500  0.500  1.0
  Ho  Ho2  1  0.500  0.000  0.500  1.0
  Ho  Ho3  1  0.000  0.000  0.000  1.0
  Fe  Fe4  1  0.000  0.500  0.000  1.0
  Fe  Fe5  1  0.000  0.000  0.500  1.0
  Sb  Sb6  1  0.000  0.500  0.500  1.0
  Sb  Sb7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.910  0.160  0.750  1.0
  O  O9  1  0.333  0.583  0.750  1.0
  O  O10  1  0.910  0.581  0.742  1.0
  O  O11  1  0.340  0.168  0.758  1.0
  O  O12  1  0.910  0.168  0.328  1.0
  O  O13  1  0.340  0.581  0.172  1.0
  O  O14  1  0.090  0.840  0.250  1.0
  O  O15  1  0.667  0.417  0.250  1.0
  O  O16  1  0.090  0.419  0.258  1.0
  O  O17  1  0.660  0.832  0.242  1.0
  O  O18  1  0.090  0.832  0.672  1.0
  O  O19  1  0.660  0.419  0.828  1.0
  O  O20  1  0.623  0.873  0.750  1.0
  O  O21  1  0.377  0.127  0.250  1.0
[/CIF]
.
The material described by Ho2FeSbO7 crystallizes in the orthorhombic Imma space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a distorted body-centered cubic geometry to two equivalent O(2), two equivalent O(4), and four equivalent O(3) atoms. In the second Ho site, Ho(2) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(4), and four equivalent O(3) atoms. Fe(1) is bonded to two equivalent O(1) and four equivalent O(3) atoms to form FeO6 octahedra that share corners with two equivalent Fe(1)O6 octahedra and corners with four equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-54°. Sb(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-52°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ho(2) and two equivalent Fe(1) atoms to form distorted OHo2Fe2 tetrahedra that share corners with two equivalent O(4)Ho4 tetrahedra, corners with four equivalent O(1)Ho2Fe2 tetrahedra, corners with eight equivalent O(3)Ho2FeSb tetrahedra,  an edgeedge with one O(4)Ho4 tetrahedra, and edges with four equivalent O(3)Ho2FeSb tetrahedra. In the second O site, O(2) is bonded to two equivalent Ho(1) and two equivalent Sb(1) atoms to form distorted OHo2Sb2 tetrahedra that share corners with two equivalent O(4)Ho4 tetrahedra, corners with four equivalent O(2)Ho2Sb2 tetrahedra, corners with eight equivalent O(3)Ho2FeSb tetrahedra,  an edgeedge with one O(4)Ho4 tetrahedra, and edges with four equivalent O(3)Ho2FeSb tetrahedra. In the third O site, O(3) is bonded to one Ho(1), one Ho(2), one Fe(1), and one Sb(1) atom to form distorted OHo2FeSb tetrahedra that share corners with two equivalent O(1)Ho2Fe2 tetrahedra, corners with two equivalent O(2)Ho2Sb2 tetrahedra, corners with two equivalent O(4)Ho4 tetrahedra, corners with eight equivalent O(3)Ho2FeSb tetrahedra,  an edgeedge with one O(1)Ho2Fe2 tetrahedra,  an edgeedge with one O(2)Ho2Sb2 tetrahedra,  an edgeedge with one O(4)Ho4 tetrahedra, and edges with two equivalent O(3)Ho2FeSb tetrahedra. In the fourth O site, O(4) is bonded to two equivalent Ho(1) and two equivalent Ho(2) atoms to form OHo4 tetrahedra that share corners with two equivalent O(1)Ho2Fe2 tetrahedra, corners with two equivalent O(2)Ho2Sb2 tetrahedra, corners with four equivalent O(4)Ho4 tetrahedra, corners with eight equivalent O(3)Ho2FeSb tetrahedra,  an edgeedge with one O(1)Ho2Fe2 tetrahedra,  an edgeedge with one O(2)Ho2Sb2 tetrahedra, and edges with four equivalent O(3)Ho2FeSb tetrahedra. is represented by the CIF card [CIF]
data_Ho2FeSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.284
_cell_length_b   7.284
_cell_length_c   7.284
_cell_angle_alpha   120.433
_cell_angle_beta   119.435
_cell_angle_gamma   90.116
_symmetry_Int_Tables_number   1
_cell_volume   273.532
_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
  Ho  Ho0  1  0.500  0.000  0.000  1.0
  Ho  Ho1  1  0.500  0.500  0.500  1.0
  Ho  Ho2  1  0.500  0.000  0.500  1.0
  Ho  Ho3  1  0.000  0.000  0.000  1.0
  Fe  Fe4  1  0.000  0.500  0.000  1.0
  Fe  Fe5  1  0.000  0.000  0.500  1.0
  Sb  Sb6  1  0.000  0.500  0.500  1.0
  Sb  Sb7  1  0.500  0.500  0.000  1.0
  O  O8  1  0.910  0.160  0.750  1.0
  O  O9  1  0.333  0.583  0.750  1.0
  O  O10  1  0.910  0.581  0.742  1.0
  O  O11  1  0.340  0.168  0.758  1.0
  O  O12  1  0.910  0.168  0.328  1.0
  O  O13  1  0.340  0.581  0.172  1.0
  O  O14  1  0.090  0.840  0.250  1.0
  O  O15  1  0.667  0.417  0.250  1.0
  O  O16  1  0.090  0.419  0.258  1.0
  O  O17  1  0.660  0.832  0.242  1.0
  O  O18  1  0.090  0.832  0.672  1.0
  O  O19  1  0.660  0.419  0.828  1.0
  O  O20  1  0.623  0.873  0.750  1.0
  O  O21  1  0.377  0.127  0.250  1.0
[/CIF]
.