The structure described by Ni(PO3)4 crystallizes in the monoclinic C2/c space group. Ni(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Ni(1)O6 octahedra and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. In the second P site, P(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent Ni(1)O6 octahedra and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 32-47°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ni(1) and one P(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Ni(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ni(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one P(1) atom. is represented by the CIF file [CIF]
data_Ni(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.398
_cell_length_b   7.398
_cell_length_c   10.098
_cell_angle_alpha   68.140
_cell_angle_beta   68.140
_cell_angle_gamma   64.466
_symmetry_Int_Tables_number   1
_cell_volume   447.806
_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
  Ni  Ni0  1  0.500  0.000  0.000  1.0
  Ni  Ni1  1  0.000  0.500  0.500  1.0
  P  P2  1  0.754  0.263  0.484  1.0
  P  P3  1  0.737  0.246  0.016  1.0
  P  P4  1  0.688  0.669  0.813  1.0
  P  P5  1  0.263  0.754  0.984  1.0
  P  P6  1  0.246  0.737  0.516  1.0
  P  P7  1  0.331  0.312  0.687  1.0
  P  P8  1  0.669  0.688  0.313  1.0
  P  P9  1  0.312  0.331  0.187  1.0
  O  O10  1  0.678  0.452  0.348  1.0
  O  O11  1  0.207  0.330  0.344  1.0
  O  O12  1  0.793  0.670  0.656  1.0
  O  O13  1  0.815  0.340  0.575  1.0
  O  O14  1  0.340  0.815  0.075  1.0
  O  O15  1  0.452  0.678  0.848  1.0
  O  O16  1  0.310  0.157  0.144  1.0
  O  O17  1  0.208  0.549  0.081  1.0
  O  O18  1  0.549  0.208  0.581  1.0
  O  O19  1  0.085  0.907  0.916  1.0
  O  O20  1  0.322  0.548  0.652  1.0
  O  O21  1  0.330  0.207  0.844  1.0
  O  O22  1  0.843  0.690  0.356  1.0
  O  O23  1  0.093  0.915  0.584  1.0
  O  O24  1  0.907  0.085  0.416  1.0
  O  O25  1  0.660  0.185  0.925  1.0
  O  O26  1  0.670  0.793  0.156  1.0
  O  O27  1  0.185  0.660  0.425  1.0
  O  O28  1  0.915  0.093  0.084  1.0
  O  O29  1  0.451  0.792  0.419  1.0
  O  O30  1  0.792  0.451  0.919  1.0
  O  O31  1  0.690  0.843  0.856  1.0
  O  O32  1  0.548  0.322  0.152  1.0
  O  O33  1  0.157  0.310  0.644  1.0
[/CIF]
.
The structure described by Ni(PO3)4 crystallizes in the monoclinic C2/c space group. Ni(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form NiO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Ni(1)O6 octahedra and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 54°. In the second P site, P(2) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form PO4 tetrahedra that share corners with two equivalent Ni(1)O6 octahedra and corners with two equivalent P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 32-47°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ni(1) and one P(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Ni(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ni(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(1) and one P(2) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one P(1) atom. is represented by the CIF file [CIF]
data_Ni(PO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.398
_cell_length_b   7.398
_cell_length_c   10.098
_cell_angle_alpha   68.140
_cell_angle_beta   68.140
_cell_angle_gamma   64.466
_symmetry_Int_Tables_number   1
_cell_volume   447.806
_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
  Ni  Ni0  1  0.500  0.000  0.000  1.0
  Ni  Ni1  1  0.000  0.500  0.500  1.0
  P  P2  1  0.754  0.263  0.484  1.0
  P  P3  1  0.737  0.246  0.016  1.0
  P  P4  1  0.688  0.669  0.813  1.0
  P  P5  1  0.263  0.754  0.984  1.0
  P  P6  1  0.246  0.737  0.516  1.0
  P  P7  1  0.331  0.312  0.687  1.0
  P  P8  1  0.669  0.688  0.313  1.0
  P  P9  1  0.312  0.331  0.187  1.0
  O  O10  1  0.678  0.452  0.348  1.0
  O  O11  1  0.207  0.330  0.344  1.0
  O  O12  1  0.793  0.670  0.656  1.0
  O  O13  1  0.815  0.340  0.575  1.0
  O  O14  1  0.340  0.815  0.075  1.0
  O  O15  1  0.452  0.678  0.848  1.0
  O  O16  1  0.310  0.157  0.144  1.0
  O  O17  1  0.208  0.549  0.081  1.0
  O  O18  1  0.549  0.208  0.581  1.0
  O  O19  1  0.085  0.907  0.916  1.0
  O  O20  1  0.322  0.548  0.652  1.0
  O  O21  1  0.330  0.207  0.844  1.0
  O  O22  1  0.843  0.690  0.356  1.0
  O  O23  1  0.093  0.915  0.584  1.0
  O  O24  1  0.907  0.085  0.416  1.0
  O  O25  1  0.660  0.185  0.925  1.0
  O  O26  1  0.670  0.793  0.156  1.0
  O  O27  1  0.185  0.660  0.425  1.0
  O  O28  1  0.915  0.093  0.084  1.0
  O  O29  1  0.451  0.792  0.419  1.0
  O  O30  1  0.792  0.451  0.919  1.0
  O  O31  1  0.690  0.843  0.856  1.0
  O  O32  1  0.548  0.322  0.152  1.0
  O  O33  1  0.157  0.310  0.644  1.0
[/CIF]
.