The compound described by Ho2CrSbO7 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(1), two equivalent O(3), and four equivalent O(4) atoms. In the second Ho site, Ho(2) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. Cr(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with four equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-55°. Sb(1) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra and corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ho(1) and two equivalent Ho(2) atoms to form OHo4 tetrahedra that share corners with two equivalent O(2)Ho2Cr2 tetrahedra, corners with two equivalent O(3)Ho2Sb2 tetrahedra, corners with four equivalent O(1)Ho4 tetrahedra, corners with eight equivalent O(4)Ho2CrSb tetrahedra,  an edgeedge with one O(2)Ho2Cr2 tetrahedra,  an edgeedge with one O(3)Ho2Sb2 tetrahedra, and edges with four equivalent O(4)Ho2CrSb tetrahedra. In the second O site, O(2) is bonded to two equivalent Ho(2) and two equivalent Cr(1) atoms to form distorted OHo2Cr2 tetrahedra that share corners with two equivalent O(1)Ho4 tetrahedra, corners with four equivalent O(2)Ho2Cr2 tetrahedra, corners with eight equivalent O(4)Ho2CrSb tetrahedra,  an edgeedge with one O(1)Ho4 tetrahedra, and edges with four equivalent O(4)Ho2CrSb tetrahedra. In the third O site, O(3) 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(1)Ho4 tetrahedra, corners with four equivalent O(3)Ho2Sb2 tetrahedra, corners with eight equivalent O(4)Ho2CrSb tetrahedra,  an edgeedge with one O(1)Ho4 tetrahedra, and edges with four equivalent O(4)Ho2CrSb tetrahedra. In the fourth O site, O(4) is bonded to one Ho(1), one Ho(2), one Cr(1), and one Sb(1) atom to form distorted OHo2CrSb tetrahedra that share corners with two equivalent O(2)Ho2Cr2 tetrahedra, corners with two equivalent O(3)Ho2Sb2 tetrahedra, corners with two equivalent O(1)Ho4 tetrahedra, corners with eight equivalent O(4)Ho2CrSb tetrahedra,  an edgeedge with one O(2)Ho2Cr2 tetrahedra,  an edgeedge with one O(3)Ho2Sb2 tetrahedra,  an edgeedge with one O(1)Ho4 tetrahedra, and edges with two equivalent O(4)Ho2CrSb tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2CrSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.271
_cell_length_b   7.271
_cell_length_c   7.271
_cell_angle_alpha   120.244
_cell_angle_beta   119.564
_cell_angle_gamma   90.168
_symmetry_Int_Tables_number   1
_cell_volume   272.171
_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
  Cr  Cr4  1  0.000  0.500  0.000  1.0
  Cr  Cr5  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  0.622  0.872  0.750  1.0
  O  O9  1  0.378  0.128  0.250  1.0
  O  O10  1  0.909  0.159  0.750  1.0
  O  O11  1  0.334  0.584  0.750  1.0
  O  O12  1  0.912  0.581  0.744  1.0
  O  O13  1  0.337  0.168  0.756  1.0
  O  O14  1  0.912  0.168  0.331  1.0
  O  O15  1  0.337  0.581  0.169  1.0
  O  O16  1  0.091  0.841  0.250  1.0
  O  O17  1  0.666  0.416  0.250  1.0
  O  O18  1  0.088  0.419  0.256  1.0
  O  O19  1  0.663  0.832  0.244  1.0
  O  O20  1  0.088  0.832  0.669  1.0
  O  O21  1  0.663  0.419  0.831  1.0
[/CIF]
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The compound described by Ho2CrSbO7 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(1), two equivalent O(3), and four equivalent O(4) atoms. In the second Ho site, Ho(2) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(4) atoms. Cr(1) is bonded to two equivalent O(2) and four equivalent O(4) atoms to form CrO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with four equivalent Sb(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-55°. Sb(1) is bonded to two equivalent O(3) and four equivalent O(4) atoms to form SbO6 octahedra that share corners with two equivalent Sb(1)O6 octahedra and corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-51°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Ho(1) and two equivalent Ho(2) atoms to form OHo4 tetrahedra that share corners with two equivalent O(2)Ho2Cr2 tetrahedra, corners with two equivalent O(3)Ho2Sb2 tetrahedra, corners with four equivalent O(1)Ho4 tetrahedra, corners with eight equivalent O(4)Ho2CrSb tetrahedra,  an edgeedge with one O(2)Ho2Cr2 tetrahedra,  an edgeedge with one O(3)Ho2Sb2 tetrahedra, and edges with four equivalent O(4)Ho2CrSb tetrahedra. In the second O site, O(2) is bonded to two equivalent Ho(2) and two equivalent Cr(1) atoms to form distorted OHo2Cr2 tetrahedra that share corners with two equivalent O(1)Ho4 tetrahedra, corners with four equivalent O(2)Ho2Cr2 tetrahedra, corners with eight equivalent O(4)Ho2CrSb tetrahedra,  an edgeedge with one O(1)Ho4 tetrahedra, and edges with four equivalent O(4)Ho2CrSb tetrahedra. In the third O site, O(3) 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(1)Ho4 tetrahedra, corners with four equivalent O(3)Ho2Sb2 tetrahedra, corners with eight equivalent O(4)Ho2CrSb tetrahedra,  an edgeedge with one O(1)Ho4 tetrahedra, and edges with four equivalent O(4)Ho2CrSb tetrahedra. In the fourth O site, O(4) is bonded to one Ho(1), one Ho(2), one Cr(1), and one Sb(1) atom to form distorted OHo2CrSb tetrahedra that share corners with two equivalent O(2)Ho2Cr2 tetrahedra, corners with two equivalent O(3)Ho2Sb2 tetrahedra, corners with two equivalent O(1)Ho4 tetrahedra, corners with eight equivalent O(4)Ho2CrSb tetrahedra,  an edgeedge with one O(2)Ho2Cr2 tetrahedra,  an edgeedge with one O(3)Ho2Sb2 tetrahedra,  an edgeedge with one O(1)Ho4 tetrahedra, and edges with two equivalent O(4)Ho2CrSb tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2CrSbO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.271
_cell_length_b   7.271
_cell_length_c   7.271
_cell_angle_alpha   120.244
_cell_angle_beta   119.564
_cell_angle_gamma   90.168
_symmetry_Int_Tables_number   1
_cell_volume   272.171
_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
  Cr  Cr4  1  0.000  0.500  0.000  1.0
  Cr  Cr5  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  0.622  0.872  0.750  1.0
  O  O9  1  0.378  0.128  0.250  1.0
  O  O10  1  0.909  0.159  0.750  1.0
  O  O11  1  0.334  0.584  0.750  1.0
  O  O12  1  0.912  0.581  0.744  1.0
  O  O13  1  0.337  0.168  0.756  1.0
  O  O14  1  0.912  0.168  0.331  1.0
  O  O15  1  0.337  0.581  0.169  1.0
  O  O16  1  0.091  0.841  0.250  1.0
  O  O17  1  0.666  0.416  0.250  1.0
  O  O18  1  0.088  0.419  0.256  1.0
  O  O19  1  0.663  0.832  0.244  1.0
  O  O20  1  0.088  0.832  0.669  1.0
  O  O21  1  0.663  0.419  0.831  1.0
[/CIF]
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