The material structure described by Ho2Fe12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 18-coordinate geometry to three equivalent Fe(1), three equivalent Fe(2), six equivalent Fe(3), and six equivalent P(2) atoms. In the second Ho site, Ho(2) is bonded in a 15-coordinate geometry to three equivalent Fe(3), six equivalent Fe(1), and six equivalent P(1) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Ho(1), two equivalent Ho(2), two equivalent P(1), and two equivalent P(2) atoms to form distorted FeHo3P4 tetrahedra that share corners with four equivalent Fe(3)Ho3P4 tetrahedra, corners with four equivalent Fe(2)HoP4 tetrahedra, corners with six equivalent Fe(1)Ho3P4 tetrahedra,  an edgeedge with one Fe(2)HoP4 tetrahedra, edges with two equivalent Fe(1)Ho3P4 tetrahedra, edges with four equivalent Fe(3)Ho3P4 tetrahedra,  a faceface with one Fe(2)HoP4 tetrahedra, faces with two equivalent Fe(1)Ho3P4 tetrahedra, and faces with two equivalent Fe(3)Ho3P4 tetrahedra. In the second Fe site, Fe(2) is bonded to one Ho(1), one P(1), one P(3), and two equivalent P(2) atoms to form distorted FeHoP4 tetrahedra that share corners with two equivalent Fe(3)Ho3P4 tetrahedra, corners with four equivalent Fe(1)Ho3P4 tetrahedra, corners with six equivalent Fe(2)HoP4 tetrahedra,  an edgeedge with one Fe(1)Ho3P4 tetrahedra, edges with two equivalent Fe(3)Ho3P4 tetrahedra,  a faceface with one Fe(1)Ho3P4 tetrahedra, and faces with two equivalent Fe(3)Ho3P4 tetrahedra. In the third Fe site, Fe(3) is bonded to one Ho(2), two equivalent Ho(1), two equivalent P(1), and two equivalent P(2) atoms to form distorted FeHo3P4 tetrahedra that share corners with two equivalent Fe(2)HoP4 tetrahedra, corners with four equivalent Fe(1)Ho3P4 tetrahedra, corners with six equivalent Fe(3)Ho3P4 tetrahedra, edges with two equivalent Fe(3)Ho3P4 tetrahedra, edges with two equivalent Fe(2)HoP4 tetrahedra, edges with four equivalent Fe(1)Ho3P4 tetrahedra, faces with two equivalent Fe(1)Ho3P4 tetrahedra, faces with two equivalent Fe(3)Ho3P4 tetrahedra, and faces with two equivalent Fe(2)HoP4 tetrahedra. In the fourth Fe site, Fe(4) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent P(3) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), one Fe(2), two equivalent Fe(1), two equivalent Fe(3), and two equivalent Fe(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Fe(4), two equivalent Fe(1), two equivalent Fe(2), and two equivalent Fe(3) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to three equivalent Fe(2) and six equivalent Fe(4) atoms. is represented by the CIF card [CIF]
data_Ho2Fe12P7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.636
_cell_length_b   8.970
_cell_length_c   8.972
_cell_angle_alpha   120.058
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   253.242
_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  0.000  0.667  0.334  1.0
  Ho  Ho1  1  0.500  0.333  0.667  1.0
  Fe  Fe2  1  0.000  0.373  0.945  1.0
  Fe  Fe3  1  0.000  0.055  0.428  1.0
  Fe  Fe4  1  0.000  0.572  0.627  1.0
  Fe  Fe5  1  0.000  0.881  0.726  1.0
  Fe  Fe6  1  0.000  0.275  0.155  1.0
  Fe  Fe7  1  0.000  0.845  0.120  1.0
  Fe  Fe8  1  0.500  0.952  0.568  1.0
  Fe  Fe9  1  0.500  0.432  0.384  1.0
  Fe  Fe10  1  0.500  0.616  0.048  1.0
  Fe  Fe11  1  0.500  0.121  0.903  1.0
  Fe  Fe12  1  0.500  0.097  0.218  1.0
  Fe  Fe13  1  0.500  0.782  0.879  1.0
  P  P14  1  0.000  0.114  0.704  1.0
  P  P15  1  0.000  0.295  0.410  1.0
  P  P16  1  0.000  0.590  0.885  1.0
  P  P17  1  0.500  0.711  0.598  1.0
  P  P18  1  0.500  0.402  0.112  1.0
  P  P19  1  0.500  0.888  0.290  1.0
  P  P20  1  0.000  1.000  0.000  1.0
[/CIF]
.
The material structure described by Ho2Fe12P7 crystallizes in the hexagonal P-6 space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 18-coordinate geometry to three equivalent Fe(1), three equivalent Fe(2), six equivalent Fe(3), and six equivalent P(2) atoms. In the second Ho site, Ho(2) is bonded in a 15-coordinate geometry to three equivalent Fe(3), six equivalent Fe(1), and six equivalent P(1) atoms. There are four inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one Ho(1), two equivalent Ho(2), two equivalent P(1), and two equivalent P(2) atoms to form distorted FeHo3P4 tetrahedra that share corners with four equivalent Fe(3)Ho3P4 tetrahedra, corners with four equivalent Fe(2)HoP4 tetrahedra, corners with six equivalent Fe(1)Ho3P4 tetrahedra,  an edgeedge with one Fe(2)HoP4 tetrahedra, edges with two equivalent Fe(1)Ho3P4 tetrahedra, edges with four equivalent Fe(3)Ho3P4 tetrahedra,  a faceface with one Fe(2)HoP4 tetrahedra, faces with two equivalent Fe(1)Ho3P4 tetrahedra, and faces with two equivalent Fe(3)Ho3P4 tetrahedra. In the second Fe site, Fe(2) is bonded to one Ho(1), one P(1), one P(3), and two equivalent P(2) atoms to form distorted FeHoP4 tetrahedra that share corners with two equivalent Fe(3)Ho3P4 tetrahedra, corners with four equivalent Fe(1)Ho3P4 tetrahedra, corners with six equivalent Fe(2)HoP4 tetrahedra,  an edgeedge with one Fe(1)Ho3P4 tetrahedra, edges with two equivalent Fe(3)Ho3P4 tetrahedra,  a faceface with one Fe(1)Ho3P4 tetrahedra, and faces with two equivalent Fe(3)Ho3P4 tetrahedra. In the third Fe site, Fe(3) is bonded to one Ho(2), two equivalent Ho(1), two equivalent P(1), and two equivalent P(2) atoms to form distorted FeHo3P4 tetrahedra that share corners with two equivalent Fe(2)HoP4 tetrahedra, corners with four equivalent Fe(1)Ho3P4 tetrahedra, corners with six equivalent Fe(3)Ho3P4 tetrahedra, edges with two equivalent Fe(3)Ho3P4 tetrahedra, edges with two equivalent Fe(2)HoP4 tetrahedra, edges with four equivalent Fe(1)Ho3P4 tetrahedra, faces with two equivalent Fe(1)Ho3P4 tetrahedra, faces with two equivalent Fe(3)Ho3P4 tetrahedra, and faces with two equivalent Fe(2)HoP4 tetrahedra. In the fourth Fe site, Fe(4) is bonded in a 5-coordinate geometry to one P(2), two equivalent P(1), and two equivalent P(3) atoms. There are three inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to two equivalent Ho(2), one Fe(2), two equivalent Fe(1), two equivalent Fe(3), and two equivalent Fe(4) atoms. In the second P site, P(2) is bonded in a 9-coordinate geometry to two equivalent Ho(1), one Fe(4), two equivalent Fe(1), two equivalent Fe(2), and two equivalent Fe(3) atoms. In the third P site, P(3) is bonded in a 9-coordinate geometry to three equivalent Fe(2) and six equivalent Fe(4) atoms. is represented by the CIF card [CIF]
data_Ho2Fe12P7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.636
_cell_length_b   8.970
_cell_length_c   8.972
_cell_angle_alpha   120.058
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   253.242
_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  0.000  0.667  0.334  1.0
  Ho  Ho1  1  0.500  0.333  0.667  1.0
  Fe  Fe2  1  0.000  0.373  0.945  1.0
  Fe  Fe3  1  0.000  0.055  0.428  1.0
  Fe  Fe4  1  0.000  0.572  0.627  1.0
  Fe  Fe5  1  0.000  0.881  0.726  1.0
  Fe  Fe6  1  0.000  0.275  0.155  1.0
  Fe  Fe7  1  0.000  0.845  0.120  1.0
  Fe  Fe8  1  0.500  0.952  0.568  1.0
  Fe  Fe9  1  0.500  0.432  0.384  1.0
  Fe  Fe10  1  0.500  0.616  0.048  1.0
  Fe  Fe11  1  0.500  0.121  0.903  1.0
  Fe  Fe12  1  0.500  0.097  0.218  1.0
  Fe  Fe13  1  0.500  0.782  0.879  1.0
  P  P14  1  0.000  0.114  0.704  1.0
  P  P15  1  0.000  0.295  0.410  1.0
  P  P16  1  0.000  0.590  0.885  1.0
  P  P17  1  0.500  0.711  0.598  1.0
  P  P18  1  0.500  0.402  0.112  1.0
  P  P19  1  0.500  0.888  0.290  1.0
  P  P20  1  0.000  1.000  0.000  1.0
[/CIF]
.