The material structure described by Ho4C7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to one C(2), one C(3), two equivalent C(1), and three equivalent C(4) atoms to form distorted HoC7 octahedra that share corners with two equivalent Ho(1)C7 octahedra,  a cornercorner with one C(2)Ho4C trigonal bipyramid, and edges with five equivalent Ho(1)C7 octahedra. The corner-sharing octahedra are not tilted. In the second Ho site, Ho(2) is bonded in a 9-coordinate geometry to one C(1), two equivalent C(4), three equivalent C(2), and three equivalent C(3) atoms. There are four inequivalent C sites. In the first C site, C(1) is bonded to two equivalent Ho(2) and four equivalent Ho(1) atoms to form CHo6 octahedra that share corners with two equivalent C(2)Ho4C trigonal bipyramids, edges with two equivalent C(1)Ho6 octahedra, and edges with four equivalent C(2)Ho4C trigonal bipyramids. In the second C site, C(2) is bonded to one Ho(1), three equivalent Ho(2), and one C(3) atom to form distorted CHo4C trigonal bipyramids that share  a cornercorner with one Ho(1)C7 octahedra,  a cornercorner with one C(1)Ho6 octahedra, corners with six equivalent C(2)Ho4C trigonal bipyramids, and edges with two equivalent C(1)Ho6 octahedra. The corner-sharing octahedral tilt angles range from 33-61°. In the third C site, C(3) is bonded in a 6-coordinate geometry to one Ho(1), three equivalent Ho(2), one C(2), and one C(4) atom. In the fourth C site, C(4) is bonded in a 5-coordinate geometry to two equivalent Ho(2), three equivalent Ho(1), and one C(3) atom. is represented by the CIF file [CIF]
data_Ho4C7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.677
_cell_length_b   6.411
_cell_length_c   13.627
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   104.735
_symmetry_Int_Tables_number   1
_cell_volume   310.670
_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  0.634  0.260  0.945  1.0
  Ho  Ho1  1  0.366  0.240  0.445  1.0
  Ho  Ho2  1  0.366  0.740  0.055  1.0
  Ho  Ho3  1  0.634  0.760  0.555  1.0
  Ho  Ho4  1  0.947  0.340  0.663  1.0
  Ho  Ho5  1  0.053  0.160  0.163  1.0
  Ho  Ho6  1  0.053  0.660  0.337  1.0
  Ho  Ho7  1  0.947  0.840  0.837  1.0
  C  C8  1  0.000  0.500  0.500  1.0
  C  C9  1  0.000  0.000  0.000  1.0
  C  C10  1  0.534  0.077  0.785  1.0
  C  C11  1  0.466  0.423  0.285  1.0
  C  C12  1  0.466  0.923  0.215  1.0
  C  C13  1  0.534  0.577  0.715  1.0
  C  C14  1  0.620  0.453  0.197  1.0
  C  C15  1  0.380  0.047  0.697  1.0
  C  C16  1  0.734  0.950  0.396  1.0
  C  C17  1  0.266  0.550  0.896  1.0
  C  C18  1  0.266  0.050  0.604  1.0
  C  C19  1  0.734  0.450  0.104  1.0
  C  C20  1  0.620  0.953  0.303  1.0
  C  C21  1  0.380  0.547  0.803  1.0
[/CIF]
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The material structure described by Ho4C7 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded to one C(2), one C(3), two equivalent C(1), and three equivalent C(4) atoms to form distorted HoC7 octahedra that share corners with two equivalent Ho(1)C7 octahedra,  a cornercorner with one C(2)Ho4C trigonal bipyramid, and edges with five equivalent Ho(1)C7 octahedra. The corner-sharing octahedra are not tilted. In the second Ho site, Ho(2) is bonded in a 9-coordinate geometry to one C(1), two equivalent C(4), three equivalent C(2), and three equivalent C(3) atoms. There are four inequivalent C sites. In the first C site, C(1) is bonded to two equivalent Ho(2) and four equivalent Ho(1) atoms to form CHo6 octahedra that share corners with two equivalent C(2)Ho4C trigonal bipyramids, edges with two equivalent C(1)Ho6 octahedra, and edges with four equivalent C(2)Ho4C trigonal bipyramids. In the second C site, C(2) is bonded to one Ho(1), three equivalent Ho(2), and one C(3) atom to form distorted CHo4C trigonal bipyramids that share  a cornercorner with one Ho(1)C7 octahedra,  a cornercorner with one C(1)Ho6 octahedra, corners with six equivalent C(2)Ho4C trigonal bipyramids, and edges with two equivalent C(1)Ho6 octahedra. The corner-sharing octahedral tilt angles range from 33-61°. In the third C site, C(3) is bonded in a 6-coordinate geometry to one Ho(1), three equivalent Ho(2), one C(2), and one C(4) atom. In the fourth C site, C(4) is bonded in a 5-coordinate geometry to two equivalent Ho(2), three equivalent Ho(1), and one C(3) atom. is represented by the CIF file [CIF]
data_Ho4C7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.677
_cell_length_b   6.411
_cell_length_c   13.627
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   104.735
_symmetry_Int_Tables_number   1
_cell_volume   310.670
_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  0.634  0.260  0.945  1.0
  Ho  Ho1  1  0.366  0.240  0.445  1.0
  Ho  Ho2  1  0.366  0.740  0.055  1.0
  Ho  Ho3  1  0.634  0.760  0.555  1.0
  Ho  Ho4  1  0.947  0.340  0.663  1.0
  Ho  Ho5  1  0.053  0.160  0.163  1.0
  Ho  Ho6  1  0.053  0.660  0.337  1.0
  Ho  Ho7  1  0.947  0.840  0.837  1.0
  C  C8  1  0.000  0.500  0.500  1.0
  C  C9  1  0.000  0.000  0.000  1.0
  C  C10  1  0.534  0.077  0.785  1.0
  C  C11  1  0.466  0.423  0.285  1.0
  C  C12  1  0.466  0.923  0.215  1.0
  C  C13  1  0.534  0.577  0.715  1.0
  C  C14  1  0.620  0.453  0.197  1.0
  C  C15  1  0.380  0.047  0.697  1.0
  C  C16  1  0.734  0.950  0.396  1.0
  C  C17  1  0.266  0.550  0.896  1.0
  C  C18  1  0.266  0.050  0.604  1.0
  C  C19  1  0.734  0.450  0.104  1.0
  C  C20  1  0.620  0.953  0.303  1.0
  C  C21  1  0.380  0.547  0.803  1.0
[/CIF]
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