The structure described by Ho2P4O13 crystallizes in the monoclinic C2/c space group. Ho(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form corner-sharing PO4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to two equivalent P(2) atoms. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Ho(1) and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Ho(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Ho(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Ho(1) and one P(1) atom. In the seventh O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Ho(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2P4O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.773
_cell_length_b   6.773
_cell_length_c   12.820
_cell_angle_alpha   75.296
_cell_angle_beta   75.296
_cell_angle_gamma   59.360
_symmetry_Int_Tables_number   1
_cell_volume   483.848
_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  0.689  0.693  0.452  1.0
  Ho  Ho1  1  0.693  0.689  0.952  1.0
  Ho  Ho2  1  0.307  0.311  0.048  1.0
  Ho  Ho3  1  0.311  0.307  0.548  1.0
  P  P4  1  0.752  0.772  0.162  1.0
  P  P5  1  0.772  0.752  0.662  1.0
  P  P6  1  0.834  0.145  0.366  1.0
  P  P7  1  0.855  0.166  0.134  1.0
  P  P8  1  0.145  0.834  0.866  1.0
  P  P9  1  0.166  0.855  0.634  1.0
  P  P10  1  0.228  0.248  0.338  1.0
  P  P11  1  0.248  0.228  0.838  1.0
  O  O12  1  0.873  0.903  0.399  1.0
  O  O13  1  0.881  0.917  0.155  1.0
  O  O14  1  0.903  0.873  0.899  1.0
  O  O15  1  0.917  0.881  0.655  1.0
  O  O16  1  0.688  0.699  0.280  1.0
  O  O17  1  0.922  0.575  0.097  1.0
  O  O18  1  0.552  0.920  0.097  1.0
  O  O19  1  0.667  0.321  0.442  1.0
  O  O20  1  0.699  0.688  0.780  1.0
  O  O21  1  0.575  0.922  0.597  1.0
  O  O22  1  0.920  0.552  0.597  1.0
  O  O23  1  0.749  0.251  0.250  1.0
  O  O24  1  0.679  0.333  0.058  1.0
  O  O25  1  0.321  0.667  0.942  1.0
  O  O26  1  0.251  0.749  0.750  1.0
  O  O27  1  0.080  0.448  0.403  1.0
  O  O28  1  0.425  0.078  0.403  1.0
  O  O29  1  0.301  0.312  0.220  1.0
  O  O30  1  0.333  0.679  0.558  1.0
  O  O31  1  0.448  0.080  0.903  1.0
  O  O32  1  0.078  0.425  0.903  1.0
  O  O33  1  0.312  0.301  0.720  1.0
  O  O34  1  0.083  0.119  0.345  1.0
  O  O35  1  0.097  0.127  0.101  1.0
  O  O36  1  0.119  0.083  0.845  1.0
  O  O37  1  0.127  0.097  0.601  1.0
[/CIF]
.
The structure described by Ho2P4O13 crystallizes in the monoclinic C2/c space group. Ho(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form corner-sharing PO4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(7) is bonded in a bent 120 degrees geometry to two equivalent P(2) atoms. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Ho(1) and one P(2) atom. In the third O site, O(2) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(3) is bonded in a bent 150 degrees geometry to one Ho(1) and one P(1) atom. In the fifth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Ho(1) and one P(1) atom. In the sixth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent Ho(1) and one P(1) atom. In the seventh O site, O(6) is bonded in a distorted single-bond geometry to two equivalent Ho(1) and one P(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ho2P4O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.773
_cell_length_b   6.773
_cell_length_c   12.820
_cell_angle_alpha   75.296
_cell_angle_beta   75.296
_cell_angle_gamma   59.360
_symmetry_Int_Tables_number   1
_cell_volume   483.848
_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  0.689  0.693  0.452  1.0
  Ho  Ho1  1  0.693  0.689  0.952  1.0
  Ho  Ho2  1  0.307  0.311  0.048  1.0
  Ho  Ho3  1  0.311  0.307  0.548  1.0
  P  P4  1  0.752  0.772  0.162  1.0
  P  P5  1  0.772  0.752  0.662  1.0
  P  P6  1  0.834  0.145  0.366  1.0
  P  P7  1  0.855  0.166  0.134  1.0
  P  P8  1  0.145  0.834  0.866  1.0
  P  P9  1  0.166  0.855  0.634  1.0
  P  P10  1  0.228  0.248  0.338  1.0
  P  P11  1  0.248  0.228  0.838  1.0
  O  O12  1  0.873  0.903  0.399  1.0
  O  O13  1  0.881  0.917  0.155  1.0
  O  O14  1  0.903  0.873  0.899  1.0
  O  O15  1  0.917  0.881  0.655  1.0
  O  O16  1  0.688  0.699  0.280  1.0
  O  O17  1  0.922  0.575  0.097  1.0
  O  O18  1  0.552  0.920  0.097  1.0
  O  O19  1  0.667  0.321  0.442  1.0
  O  O20  1  0.699  0.688  0.780  1.0
  O  O21  1  0.575  0.922  0.597  1.0
  O  O22  1  0.920  0.552  0.597  1.0
  O  O23  1  0.749  0.251  0.250  1.0
  O  O24  1  0.679  0.333  0.058  1.0
  O  O25  1  0.321  0.667  0.942  1.0
  O  O26  1  0.251  0.749  0.750  1.0
  O  O27  1  0.080  0.448  0.403  1.0
  O  O28  1  0.425  0.078  0.403  1.0
  O  O29  1  0.301  0.312  0.220  1.0
  O  O30  1  0.333  0.679  0.558  1.0
  O  O31  1  0.448  0.080  0.903  1.0
  O  O32  1  0.078  0.425  0.903  1.0
  O  O33  1  0.312  0.301  0.720  1.0
  O  O34  1  0.083  0.119  0.345  1.0
  O  O35  1  0.097  0.127  0.101  1.0
  O  O36  1  0.119  0.083  0.845  1.0
  O  O37  1  0.127  0.097  0.601  1.0
[/CIF]
.