data_Pm2HoO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.9
_cell_length_b   6.9
_cell_length_c   6.9
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Pm2HoO4
_chemical_formula_sum   'Pm4 Ho2 O8'
_cell_volume   232.31
_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
  Pm  Pm10  1  0.66  0.66  0.1  1.0
  Pm  Pm11  1  0.1  0.66  0.66  1.0
  Pm  Pm12  1  0.66  0.1  0.66  1.0
  Pm  Pm13  1  0.1  0.1  0.1  1.0
  Ho  Ho0  1  0.0  0.0  0.0  1.0
  Ho  Ho1  1  0.44  0.44  0.44  1.0
  O  O2  1  0.68  0.68  0.68  1.0
  O  O3  1  0.68  0.08  0.08  1.0
  O  O4  1  0.08  0.68  0.08  1.0
  O  O5  1  0.12  0.12  0.52  1.0
  O  O6  1  0.08  0.08  0.68  1.0
  O  O7  1  0.12  0.52  0.12  1.0
  O  O8  1  0.52  0.52  0.52  1.0
  O  O9  1  0.52  0.12  0.12  1.0

data_Pm2HoO4
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.9
_cell_length_b   6.9
_cell_length_c   16.9
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Pm2HoO4
_chemical_formula_sum   'Pm12 Ho6 O24'
_cell_volume   696.92
_cell_formula_units_Z   6
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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
  Pm  Pm0  9  0.04  0.52  0.86  1.0
  Pm  Pm1  3  0.0  0.0  0.9  1.0
  Ho  Ho2  3  0.0  0.0  0.0  1.0
  Ho  Ho3  3  0.0  0.0  0.56  1.0
  O  O4  9  0.07  0.53  0.41  1.0
  O  O5  9  0.2  0.4  0.72  1.0
  O  O6  3  0.0  0.0  0.32  1.0
  O  O7  3  0.0  0.0  0.48  1.0

Pm Pm Pm Pm Ho Ho O O O O O O O O
HoPm2O4 crystallizes in the trigonal R3m space group. There are two inequivalent Ho sites. In the first Ho site, Ho(1) is bonded in a 4-coordinate geometry to one Pm(2) and three equivalent O(2) atoms. The Ho(1)-Pm(2) bond length is 1.67 Å. All Ho(1)-O(2) bond lengths are 1.84 Å. In the second Ho site, Ho(2) is bonded in a single-bond geometry to three equivalent Pm(1) and one O(4) atom. All Ho(2)-Pm(1) bond lengths are 2.30 Å. The Ho(2)-O(4) bond length is 1.34 Å. There are two inequivalent Pm sites. In the first Pm site, Pm(1) is bonded in a 7-coordinate geometry to one Ho(2), one O(1), one O(4), two equivalent O(2), and two equivalent O(3) atoms. The Pm(1)-O(1) bond length is 2.77 Å. The Pm(1)-O(4) bond length is 2.37 Å. Both Pm(1)-O(2) bond lengths are 2.90 Å. Both Pm(1)-O(3) bond lengths are 2.87 Å. In the second Pm site, Pm(2) is bonded in a 4-coordinate geometry to one Ho(1) and three equivalent O(3) atoms. All Pm(2)-O(3) bond lengths are 3.04 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to three equivalent Pm(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Ho(1), two equivalent Pm(1), and one O(3) atom. The O(2)-O(3) bond length is 0.92 Å. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Pm(2), two equivalent Pm(1), and one O(2) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Ho(2) and three equivalent Pm(1) atoms.