The structure described by Ho4C7 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to one C(4), two equivalent C(2), and three equivalent C(1) atoms to form distorted HoC6 octahedra that share corners with two equivalent Ho(4)C7 octahedra, edges with three equivalent Ho(4)C7 octahedra, and edges with four equivalent Ho(1)C6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. In the second Ho site, Ho(2) is bonded in a 8-coordinate geometry to one C(4), one C(7), two equivalent C(3), two equivalent C(5), and two equivalent C(6) atoms. In the third Ho site, Ho(3) is bonded in a 9-coordinate geometry to one C(1), one C(2), one C(6), two equivalent C(4), two equivalent C(5), and two equivalent C(7) atoms. In the fourth Ho site, Ho(4) is bonded to one C(2), one C(5), one C(6), two equivalent C(1), and two equivalent C(3) atoms to form distorted HoC7 octahedra that share corners with two equivalent Ho(1)C6 octahedra,  a cornercorner with one C(3)Ho4C trigonal bipyramid,  a cornercorner with one C(4)Ho4C trigonal bipyramid, edges with two equivalent Ho(4)C7 octahedra, and edges with three equivalent Ho(1)C6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. There are seven inequivalent C sites. In the first C site, C(5) is bonded to one Ho(4), two equivalent Ho(2), two equivalent Ho(3), and one C(7) atom to form distorted CHo5C octahedra that share corners with two equivalent C(3)Ho4C trigonal bipyramids, corners with four equivalent C(4)Ho4C trigonal bipyramids, edges with two equivalent C(5)Ho5C octahedra, edges with two equivalent C(1)Ho6 octahedra,  an edgeedge with one C(4)Ho4C trigonal bipyramid, and edges with two equivalent C(3)Ho4C trigonal bipyramids. In the second C site, C(6) is bonded in a 6-coordinate geometry to one Ho(3), one Ho(4), two equivalent Ho(2), one C(3), and one C(4) atom. In the third C site, C(7) is bonded in a 4-coordinate geometry to one Ho(2), two equivalent Ho(3), one C(2), and one C(5) atom. In the fourth C site, C(1) is bonded to one Ho(3), two equivalent Ho(4), and three equivalent Ho(1) atoms to form CHo6 octahedra that share  a cornercorner with one C(4)Ho4C trigonal bipyramid, corners with two equivalent C(3)Ho4C trigonal bipyramids, edges with two equivalent C(5)Ho5C octahedra, edges with four equivalent C(1)Ho6 octahedra,  an edgeedge with one C(3)Ho4C trigonal bipyramid, and edges with two equivalent C(4)Ho4C trigonal bipyramids. In the fifth C site, C(2) is bonded in a 5-coordinate geometry to one Ho(3), one Ho(4), two equivalent Ho(1), and one C(7) atom. In the sixth C site, C(3) is bonded to two equivalent Ho(2), two equivalent Ho(4), and one C(6) atom to form distorted CHo4C trigonal bipyramids that share  a cornercorner with one Ho(4)C7 octahedra, corners with two equivalent C(5)Ho5C octahedra, corners with two equivalent C(1)Ho6 octahedra, corners with two equivalent C(3)Ho4C trigonal bipyramids, corners with three equivalent C(4)Ho4C trigonal bipyramids,  an edgeedge with one C(1)Ho6 octahedra, edges with two equivalent C(5)Ho5C octahedra, and  an edgeedge with one C(3)Ho4C trigonal bipyramid. The corner-sharing octahedral tilt angles range from 9-116°. In the seventh C site, C(4) is bonded to one Ho(1), one Ho(2), two equivalent Ho(3), and one C(6) atom to form distorted CHo4C trigonal bipyramids that share  a cornercorner with one Ho(4)C7 octahedra,  a cornercorner with one C(1)Ho6 octahedra, corners with four equivalent C(5)Ho5C octahedra, corners with two equivalent C(4)Ho4C trigonal bipyramids, corners with three equivalent C(3)Ho4C trigonal bipyramids,  an edgeedge with one C(5)Ho5C octahedra, and edges with two equivalent C(1)Ho6 octahedra. The corner-sharing octahedral tilt angles range from 2-96°. is represented by the CIF file [CIF]
data_Ho4C7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.673
_cell_length_b   12.490
_cell_length_c   13.627
_cell_angle_alpha   90.000
_cell_angle_beta   96.728
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   620.830
_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
  Ho  Ho0  1  0.193  0.015  0.893  1.0
  Ho  Ho1  1  0.307  0.515  0.607  1.0
  Ho  Ho2  1  0.807  0.985  0.107  1.0
  Ho  Ho3  1  0.693  0.485  0.393  1.0
  Ho  Ho4  1  0.741  0.040  0.618  1.0
  Ho  Ho5  1  0.759  0.540  0.882  1.0
  Ho  Ho6  1  0.259  0.960  0.382  1.0
  Ho  Ho7  1  0.241  0.460  0.118  1.0
  Ho  Ho8  1  0.657  0.805  0.790  1.0
  Ho  Ho9  1  0.843  0.305  0.710  1.0
  Ho  Ho10  1  0.343  0.195  0.210  1.0
  Ho  Ho11  1  0.157  0.695  0.290  1.0
  Ho  Ho12  1  0.271  0.763  0.007  1.0
  Ho  Ho13  1  0.229  0.263  0.493  1.0
  Ho  Ho14  1  0.729  0.237  0.993  1.0
  Ho  Ho15  1  0.771  0.737  0.507  1.0
  C  C16  1  0.258  0.117  0.050  1.0
  C  C17  1  0.242  0.617  0.450  1.0
  C  C18  1  0.742  0.883  0.950  1.0
  C  C19  1  0.758  0.383  0.550  1.0
  C  C20  1  0.841  0.641  0.675  1.0
  C  C21  1  0.659  0.141  0.825  1.0
  C  C22  1  0.159  0.359  0.325  1.0
  C  C23  1  0.341  0.859  0.175  1.0
  C  C24  1  0.303  0.890  0.547  1.0
  C  C25  1  0.197  0.390  0.953  1.0
  C  C26  1  0.697  0.110  0.453  1.0
  C  C27  1  0.803  0.610  0.047  1.0
  C  C28  1  0.139  0.917  0.729  1.0
  C  C29  1  0.361  0.417  0.771  1.0
  C  C30  1  0.861  0.083  0.271  1.0
  C  C31  1  0.639  0.583  0.229  1.0
  C  C32  1  0.225  0.671  0.848  1.0
  C  C33  1  0.275  0.171  0.652  1.0
  C  C34  1  0.775  0.329  0.152  1.0
  C  C35  1  0.725  0.829  0.348  1.0
  C  C36  1  0.225  0.896  0.639  1.0
  C  C37  1  0.275  0.396  0.861  1.0
  C  C38  1  0.775  0.104  0.361  1.0
  C  C39  1  0.725  0.604  0.139  1.0
  C  C40  1  0.061  0.652  0.756  1.0
  C  C41  1  0.439  0.152  0.744  1.0
  C  C42  1  0.939  0.348  0.244  1.0
  C  C43  1  0.561  0.848  0.256  1.0
[/CIF]
.
The structure described by Ho4C7 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to one C(4), two equivalent C(2), and three equivalent C(1) atoms to form distorted HoC6 octahedra that share corners with two equivalent Ho(4)C7 octahedra, edges with three equivalent Ho(4)C7 octahedra, and edges with four equivalent Ho(1)C6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. In the second Ho site, Ho(2) is bonded in a 8-coordinate geometry to one C(4), one C(7), two equivalent C(3), two equivalent C(5), and two equivalent C(6) atoms. In the third Ho site, Ho(3) is bonded in a 9-coordinate geometry to one C(1), one C(2), one C(6), two equivalent C(4), two equivalent C(5), and two equivalent C(7) atoms. In the fourth Ho site, Ho(4) is bonded to one C(2), one C(5), one C(6), two equivalent C(1), and two equivalent C(3) atoms to form distorted HoC7 octahedra that share corners with two equivalent Ho(1)C6 octahedra,  a cornercorner with one C(3)Ho4C trigonal bipyramid,  a cornercorner with one C(4)Ho4C trigonal bipyramid, edges with two equivalent Ho(4)C7 octahedra, and edges with three equivalent Ho(1)C6 octahedra. The corner-sharing octahedral tilt angles range from 2-4°. There are seven inequivalent C sites. In the first C site, C(5) is bonded to one Ho(4), two equivalent Ho(2), two equivalent Ho(3), and one C(7) atom to form distorted CHo5C octahedra that share corners with two equivalent C(3)Ho4C trigonal bipyramids, corners with four equivalent C(4)Ho4C trigonal bipyramids, edges with two equivalent C(5)Ho5C octahedra, edges with two equivalent C(1)Ho6 octahedra,  an edgeedge with one C(4)Ho4C trigonal bipyramid, and edges with two equivalent C(3)Ho4C trigonal bipyramids. In the second C site, C(6) is bonded in a 6-coordinate geometry to one Ho(3), one Ho(4), two equivalent Ho(2), one C(3), and one C(4) atom. In the third C site, C(7) is bonded in a 4-coordinate geometry to one Ho(2), two equivalent Ho(3), one C(2), and one C(5) atom. In the fourth C site, C(1) is bonded to one Ho(3), two equivalent Ho(4), and three equivalent Ho(1) atoms to form CHo6 octahedra that share  a cornercorner with one C(4)Ho4C trigonal bipyramid, corners with two equivalent C(3)Ho4C trigonal bipyramids, edges with two equivalent C(5)Ho5C octahedra, edges with four equivalent C(1)Ho6 octahedra,  an edgeedge with one C(3)Ho4C trigonal bipyramid, and edges with two equivalent C(4)Ho4C trigonal bipyramids. In the fifth C site, C(2) is bonded in a 5-coordinate geometry to one Ho(3), one Ho(4), two equivalent Ho(1), and one C(7) atom. In the sixth C site, C(3) is bonded to two equivalent Ho(2), two equivalent Ho(4), and one C(6) atom to form distorted CHo4C trigonal bipyramids that share  a cornercorner with one Ho(4)C7 octahedra, corners with two equivalent C(5)Ho5C octahedra, corners with two equivalent C(1)Ho6 octahedra, corners with two equivalent C(3)Ho4C trigonal bipyramids, corners with three equivalent C(4)Ho4C trigonal bipyramids,  an edgeedge with one C(1)Ho6 octahedra, edges with two equivalent C(5)Ho5C octahedra, and  an edgeedge with one C(3)Ho4C trigonal bipyramid. The corner-sharing octahedral tilt angles range from 9-116°. In the seventh C site, C(4) is bonded to one Ho(1), one Ho(2), two equivalent Ho(3), and one C(6) atom to form distorted CHo4C trigonal bipyramids that share  a cornercorner with one Ho(4)C7 octahedra,  a cornercorner with one C(1)Ho6 octahedra, corners with four equivalent C(5)Ho5C octahedra, corners with two equivalent C(4)Ho4C trigonal bipyramids, corners with three equivalent C(3)Ho4C trigonal bipyramids,  an edgeedge with one C(5)Ho5C octahedra, and edges with two equivalent C(1)Ho6 octahedra. The corner-sharing octahedral tilt angles range from 2-96°. is represented by the CIF file [CIF]
data_Ho4C7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.673
_cell_length_b   12.490
_cell_length_c   13.627
_cell_angle_alpha   90.000
_cell_angle_beta   96.728
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   620.830
_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
  Ho  Ho0  1  0.193  0.015  0.893  1.0
  Ho  Ho1  1  0.307  0.515  0.607  1.0
  Ho  Ho2  1  0.807  0.985  0.107  1.0
  Ho  Ho3  1  0.693  0.485  0.393  1.0
  Ho  Ho4  1  0.741  0.040  0.618  1.0
  Ho  Ho5  1  0.759  0.540  0.882  1.0
  Ho  Ho6  1  0.259  0.960  0.382  1.0
  Ho  Ho7  1  0.241  0.460  0.118  1.0
  Ho  Ho8  1  0.657  0.805  0.790  1.0
  Ho  Ho9  1  0.843  0.305  0.710  1.0
  Ho  Ho10  1  0.343  0.195  0.210  1.0
  Ho  Ho11  1  0.157  0.695  0.290  1.0
  Ho  Ho12  1  0.271  0.763  0.007  1.0
  Ho  Ho13  1  0.229  0.263  0.493  1.0
  Ho  Ho14  1  0.729  0.237  0.993  1.0
  Ho  Ho15  1  0.771  0.737  0.507  1.0
  C  C16  1  0.258  0.117  0.050  1.0
  C  C17  1  0.242  0.617  0.450  1.0
  C  C18  1  0.742  0.883  0.950  1.0
  C  C19  1  0.758  0.383  0.550  1.0
  C  C20  1  0.841  0.641  0.675  1.0
  C  C21  1  0.659  0.141  0.825  1.0
  C  C22  1  0.159  0.359  0.325  1.0
  C  C23  1  0.341  0.859  0.175  1.0
  C  C24  1  0.303  0.890  0.547  1.0
  C  C25  1  0.197  0.390  0.953  1.0
  C  C26  1  0.697  0.110  0.453  1.0
  C  C27  1  0.803  0.610  0.047  1.0
  C  C28  1  0.139  0.917  0.729  1.0
  C  C29  1  0.361  0.417  0.771  1.0
  C  C30  1  0.861  0.083  0.271  1.0
  C  C31  1  0.639  0.583  0.229  1.0
  C  C32  1  0.225  0.671  0.848  1.0
  C  C33  1  0.275  0.171  0.652  1.0
  C  C34  1  0.775  0.329  0.152  1.0
  C  C35  1  0.725  0.829  0.348  1.0
  C  C36  1  0.225  0.896  0.639  1.0
  C  C37  1  0.275  0.396  0.861  1.0
  C  C38  1  0.775  0.104  0.361  1.0
  C  C39  1  0.725  0.604  0.139  1.0
  C  C40  1  0.061  0.652  0.756  1.0
  C  C41  1  0.439  0.152  0.744  1.0
  C  C42  1  0.939  0.348  0.244  1.0
  C  C43  1  0.561  0.848  0.256  1.0
[/CIF]
.