The compound described by Ho4CrS7 crystallizes in the monoclinic Cm space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to one S(4), one S(7), two equivalent S(2), two equivalent S(3), and two equivalent S(5) atoms. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one S(3), two equivalent S(1), two equivalent S(4), and two equivalent S(6) atoms. In the third Ho site, Ho(3) is bonded to one S(5), one S(6), two equivalent S(3), and two equivalent S(4) atoms to form HoS6 octahedra that share  a cornercorner with one Ho(4)S6 octahedra,  a cornercorner with one Cr(1)S6 octahedra, and edges with two equivalent Ho(3)S6 octahedra. The corner-sharing octahedral tilt angles range from 50-54°. In the fourth Ho site, Ho(4) is bonded to one S(2), one S(6), two equivalent S(1), and two equivalent S(7) atoms to form HoS6 octahedra that share  a cornercorner with one Ho(3)S6 octahedra, corners with two equivalent Cr(1)S6 octahedra, edges with two equivalent Ho(4)S6 octahedra, and edges with three equivalent Cr(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 3-50°. Cr(1) is bonded to one S(1), one S(5), two equivalent S(2), and two equivalent S(7) atoms to form CrS6 octahedra that share  a cornercorner with one Ho(3)S6 octahedra, corners with two equivalent Ho(4)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with three equivalent Ho(4)S6 octahedra. The corner-sharing octahedral tilt angles range from 3-54°. There are seven inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Ho(2), two equivalent Ho(4), and one Cr(1) atom to form distorted SHo4Cr trigonal bipyramids that share  a cornercorner with one S(5)Ho3Cr tetrahedra, corners with four equivalent S(6)Ho4 tetrahedra, corners with two equivalent S(3)Ho5 trigonal bipyramids, corners with two equivalent S(4)Ho5 trigonal bipyramids, edges with two equivalent S(2)Ho3Cr2 square pyramids,  an edgeedge with one S(6)Ho4 tetrahedra,  an edgeedge with one S(4)Ho5 trigonal bipyramid, and edges with two equivalent S(1)Ho4Cr trigonal bipyramids. In the second S site, S(2) is bonded to one Ho(4), two equivalent Ho(1), and two equivalent Cr(1) atoms to form SHo3Cr2 square pyramids that share  a cornercorner with one S(6)Ho4 tetrahedra, corners with four equivalent S(5)Ho3Cr tetrahedra, corners with two equivalent S(3)Ho5 trigonal bipyramids, corners with two equivalent S(4)Ho5 trigonal bipyramids, edges with two equivalent S(2)Ho3Cr2 square pyramids,  an edgeedge with one S(5)Ho3Cr tetrahedra,  an edgeedge with one S(3)Ho5 trigonal bipyramid, and edges with two equivalent S(1)Ho4Cr trigonal bipyramids. In the third S site, S(3) is bonded to one Ho(2), two equivalent Ho(1), and two equivalent Ho(3) atoms to form distorted SHo5 trigonal bipyramids that share corners with two equivalent S(2)Ho3Cr2 square pyramids, corners with four equivalent S(5)Ho3Cr tetrahedra, corners with two equivalent S(1)Ho4Cr trigonal bipyramids, corners with two equivalent S(4)Ho5 trigonal bipyramids,  an edgeedge with one S(2)Ho3Cr2 square pyramid,  an edgeedge with one S(5)Ho3Cr tetrahedra, edges with two equivalent S(6)Ho4 tetrahedra, edges with two equivalent S(3)Ho5 trigonal bipyramids, and edges with three equivalent S(4)Ho5 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Ho(1), two equivalent Ho(2), and two equivalent Ho(3) atoms to form distorted SHo5 trigonal bipyramids that share corners with two equivalent S(2)Ho3Cr2 square pyramids, corners with four equivalent S(6)Ho4 tetrahedra, corners with two equivalent S(1)Ho4Cr trigonal bipyramids, corners with two equivalent S(3)Ho5 trigonal bipyramids,  an edgeedge with one S(6)Ho4 tetrahedra, edges with two equivalent S(5)Ho3Cr tetrahedra,  an edgeedge with one S(1)Ho4Cr trigonal bipyramid, edges with two equivalent S(4)Ho5 trigonal bipyramids, and edges with three equivalent S(3)Ho5 trigonal bipyramids. In the fifth S site, S(5) is bonded to one Ho(3), two equivalent Ho(1), and one Cr(1) atom to form distorted SHo3Cr tetrahedra that share corners with four equivalent S(2)Ho3Cr2 square pyramids,  a cornercorner with one S(6)Ho4 tetrahedra, corners with two equivalent S(5)Ho3Cr tetrahedra,  a cornercorner with one S(1)Ho4Cr trigonal bipyramid, corners with four equivalent S(3)Ho5 trigonal bipyramids,  an edgeedge with one S(2)Ho3Cr2 square pyramid,  an edgeedge with one S(3)Ho5 trigonal bipyramid, and edges with two equivalent S(4)Ho5 trigonal bipyramids. In the sixth S site, S(6) is bonded to one Ho(3), one Ho(4), and two equivalent Ho(2) atoms to form SHo4 tetrahedra that share  a cornercorner with one S(2)Ho3Cr2 square pyramid,  a cornercorner with one S(5)Ho3Cr tetrahedra, corners with two equivalent S(6)Ho4 tetrahedra, corners with four equivalent S(1)Ho4Cr trigonal bipyramids, corners with four equivalent S(4)Ho5 trigonal bipyramids,  an edgeedge with one S(1)Ho4Cr trigonal bipyramid,  an edgeedge with one S(4)Ho5 trigonal bipyramid, and edges with two equivalent S(3)Ho5 trigonal bipyramids. In the seventh S site, S(7) is bonded in a distorted rectangular see-saw-like geometry to one Ho(1), two equivalent Ho(4), and two equivalent Cr(1) atoms. is represented by the CIF file [CIF]
data_Ho4CrS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.470
_cell_length_b   6.470
_cell_length_c   11.306
_cell_angle_alpha   75.009
_cell_angle_beta   75.009
_cell_angle_gamma   33.997
_symmetry_Int_Tables_number   1
_cell_volume   254.763
_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  0.693  0.693  0.208  1.0
  Ho  Ho1  1  0.307  0.307  0.801  1.0
  Ho  Ho2  1  0.998  0.998  0.008  1.0
  Ho  Ho3  1  0.113  0.113  0.563  1.0
  Cr  Cr4  1  0.885  0.885  0.425  1.0
  S  S5  1  0.748  0.748  0.633  1.0
  S  S6  1  0.273  0.273  0.352  1.0
  S  S7  1  0.336  0.336  0.052  1.0
  S  S8  1  0.660  0.660  0.947  1.0
  S  S9  1  0.031  0.031  0.231  1.0
  S  S10  1  0.964  0.964  0.785  1.0
  S  S11  1  0.492  0.492  0.494  1.0
[/CIF]
.
The compound described by Ho4CrS7 crystallizes in the monoclinic Cm space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 8-coordinate geometry to one S(4), one S(7), two equivalent S(2), two equivalent S(3), and two equivalent S(5) atoms. In the second Ho site, Ho(2) is bonded in a 7-coordinate geometry to one S(3), two equivalent S(1), two equivalent S(4), and two equivalent S(6) atoms. In the third Ho site, Ho(3) is bonded to one S(5), one S(6), two equivalent S(3), and two equivalent S(4) atoms to form HoS6 octahedra that share  a cornercorner with one Ho(4)S6 octahedra,  a cornercorner with one Cr(1)S6 octahedra, and edges with two equivalent Ho(3)S6 octahedra. The corner-sharing octahedral tilt angles range from 50-54°. In the fourth Ho site, Ho(4) is bonded to one S(2), one S(6), two equivalent S(1), and two equivalent S(7) atoms to form HoS6 octahedra that share  a cornercorner with one Ho(3)S6 octahedra, corners with two equivalent Cr(1)S6 octahedra, edges with two equivalent Ho(4)S6 octahedra, and edges with three equivalent Cr(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 3-50°. Cr(1) is bonded to one S(1), one S(5), two equivalent S(2), and two equivalent S(7) atoms to form CrS6 octahedra that share  a cornercorner with one Ho(3)S6 octahedra, corners with two equivalent Ho(4)S6 octahedra, edges with two equivalent Cr(1)S6 octahedra, and edges with three equivalent Ho(4)S6 octahedra. The corner-sharing octahedral tilt angles range from 3-54°. There are seven inequivalent S sites. In the first S site, S(1) is bonded to two equivalent Ho(2), two equivalent Ho(4), and one Cr(1) atom to form distorted SHo4Cr trigonal bipyramids that share  a cornercorner with one S(5)Ho3Cr tetrahedra, corners with four equivalent S(6)Ho4 tetrahedra, corners with two equivalent S(3)Ho5 trigonal bipyramids, corners with two equivalent S(4)Ho5 trigonal bipyramids, edges with two equivalent S(2)Ho3Cr2 square pyramids,  an edgeedge with one S(6)Ho4 tetrahedra,  an edgeedge with one S(4)Ho5 trigonal bipyramid, and edges with two equivalent S(1)Ho4Cr trigonal bipyramids. In the second S site, S(2) is bonded to one Ho(4), two equivalent Ho(1), and two equivalent Cr(1) atoms to form SHo3Cr2 square pyramids that share  a cornercorner with one S(6)Ho4 tetrahedra, corners with four equivalent S(5)Ho3Cr tetrahedra, corners with two equivalent S(3)Ho5 trigonal bipyramids, corners with two equivalent S(4)Ho5 trigonal bipyramids, edges with two equivalent S(2)Ho3Cr2 square pyramids,  an edgeedge with one S(5)Ho3Cr tetrahedra,  an edgeedge with one S(3)Ho5 trigonal bipyramid, and edges with two equivalent S(1)Ho4Cr trigonal bipyramids. In the third S site, S(3) is bonded to one Ho(2), two equivalent Ho(1), and two equivalent Ho(3) atoms to form distorted SHo5 trigonal bipyramids that share corners with two equivalent S(2)Ho3Cr2 square pyramids, corners with four equivalent S(5)Ho3Cr tetrahedra, corners with two equivalent S(1)Ho4Cr trigonal bipyramids, corners with two equivalent S(4)Ho5 trigonal bipyramids,  an edgeedge with one S(2)Ho3Cr2 square pyramid,  an edgeedge with one S(5)Ho3Cr tetrahedra, edges with two equivalent S(6)Ho4 tetrahedra, edges with two equivalent S(3)Ho5 trigonal bipyramids, and edges with three equivalent S(4)Ho5 trigonal bipyramids. In the fourth S site, S(4) is bonded to one Ho(1), two equivalent Ho(2), and two equivalent Ho(3) atoms to form distorted SHo5 trigonal bipyramids that share corners with two equivalent S(2)Ho3Cr2 square pyramids, corners with four equivalent S(6)Ho4 tetrahedra, corners with two equivalent S(1)Ho4Cr trigonal bipyramids, corners with two equivalent S(3)Ho5 trigonal bipyramids,  an edgeedge with one S(6)Ho4 tetrahedra, edges with two equivalent S(5)Ho3Cr tetrahedra,  an edgeedge with one S(1)Ho4Cr trigonal bipyramid, edges with two equivalent S(4)Ho5 trigonal bipyramids, and edges with three equivalent S(3)Ho5 trigonal bipyramids. In the fifth S site, S(5) is bonded to one Ho(3), two equivalent Ho(1), and one Cr(1) atom to form distorted SHo3Cr tetrahedra that share corners with four equivalent S(2)Ho3Cr2 square pyramids,  a cornercorner with one S(6)Ho4 tetrahedra, corners with two equivalent S(5)Ho3Cr tetrahedra,  a cornercorner with one S(1)Ho4Cr trigonal bipyramid, corners with four equivalent S(3)Ho5 trigonal bipyramids,  an edgeedge with one S(2)Ho3Cr2 square pyramid,  an edgeedge with one S(3)Ho5 trigonal bipyramid, and edges with two equivalent S(4)Ho5 trigonal bipyramids. In the sixth S site, S(6) is bonded to one Ho(3), one Ho(4), and two equivalent Ho(2) atoms to form SHo4 tetrahedra that share  a cornercorner with one S(2)Ho3Cr2 square pyramid,  a cornercorner with one S(5)Ho3Cr tetrahedra, corners with two equivalent S(6)Ho4 tetrahedra, corners with four equivalent S(1)Ho4Cr trigonal bipyramids, corners with four equivalent S(4)Ho5 trigonal bipyramids,  an edgeedge with one S(1)Ho4Cr trigonal bipyramid,  an edgeedge with one S(4)Ho5 trigonal bipyramid, and edges with two equivalent S(3)Ho5 trigonal bipyramids. In the seventh S site, S(7) is bonded in a distorted rectangular see-saw-like geometry to one Ho(1), two equivalent Ho(4), and two equivalent Cr(1) atoms. is represented by the CIF file [CIF]
data_Ho4CrS7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.470
_cell_length_b   6.470
_cell_length_c   11.306
_cell_angle_alpha   75.009
_cell_angle_beta   75.009
_cell_angle_gamma   33.997
_symmetry_Int_Tables_number   1
_cell_volume   254.763
_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  0.693  0.693  0.208  1.0
  Ho  Ho1  1  0.307  0.307  0.801  1.0
  Ho  Ho2  1  0.998  0.998  0.008  1.0
  Ho  Ho3  1  0.113  0.113  0.563  1.0
  Cr  Cr4  1  0.885  0.885  0.425  1.0
  S  S5  1  0.748  0.748  0.633  1.0
  S  S6  1  0.273  0.273  0.352  1.0
  S  S7  1  0.336  0.336  0.052  1.0
  S  S8  1  0.660  0.660  0.947  1.0
  S  S9  1  0.031  0.031  0.231  1.0
  S  S10  1  0.964  0.964  0.785  1.0
  S  S11  1  0.492  0.492  0.494  1.0
[/CIF]
.