The structure described by NaNiO7PO4 crystallizes in the tetragonal P4_2/mmc space group. The structure consists of two phosphoric acid molecules inside a NaNiO7 framework. In the NaNiO7 framework, Na(1) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra and edges with two equivalent Ni(1)O6 octahedra. The corner-sharing octahedra are not tilted. Ni(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form NiO6 octahedra that share edges with two equivalent Na(1)O6 octahedra. There are three inequivalent O sites. In the first O site, O(2) is bonded in a single-bond geometry to one Ni(1) atom. In the second O site, O(3) is bonded in a water-like geometry to one Na(1) and one Ni(1) atom. In the third O site, O(4) is bonded in a linear geometry to two equivalent Na(1) atoms. is represented by the CIF file [CIF]
data_NaNiPO11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.417
_cell_length_b   6.417
_cell_length_c   9.779
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   402.634
_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
  Na  Na0  1  0.000  0.000  0.000  1.0
  Na  Na1  1  0.000  0.000  0.500  1.0
  Ni  Ni2  1  0.000  0.500  0.500  1.0
  Ni  Ni3  1  0.500  0.000  0.000  1.0
  P  P4  1  0.500  0.500  0.750  1.0
  P  P5  1  0.500  0.500  0.250  1.0
  O  O6  1  0.500  0.702  0.660  1.0
  O  O7  1  0.500  0.298  0.660  1.0
  O  O8  1  0.298  0.500  0.160  1.0
  O  O9  1  0.702  0.500  0.160  1.0
  O  O10  1  0.500  0.702  0.340  1.0
  O  O11  1  0.500  0.298  0.340  1.0
  O  O12  1  0.702  0.500  0.840  1.0
  O  O13  1  0.298  0.500  0.840  1.0
  O  O14  1  0.000  0.500  0.687  1.0
  O  O15  1  0.500  0.000  0.187  1.0
  O  O16  1  0.000  0.500  0.313  1.0
  O  O17  1  0.500  0.000  0.813  1.0
  O  O18  1  0.198  0.705  0.500  1.0
  O  O19  1  0.802  0.295  0.500  1.0
  O  O20  1  0.295  0.198  0.000  1.0
  O  O21  1  0.705  0.802  0.000  1.0
  O  O22  1  0.802  0.705  0.500  1.0
  O  O23  1  0.198  0.295  0.500  1.0
  O  O24  1  0.705  0.198  0.000  1.0
  O  O25  1  0.295  0.802  0.000  1.0
  O  O26  1  0.000  0.000  0.750  1.0
  O  O27  1  0.000  0.000  0.250  1.0
[/CIF]
.
The structure described by NaNiO7PO4 crystallizes in the tetragonal P4_2/mmc space group. The structure consists of two phosphoric acid molecules inside a NaNiO7 framework. In the NaNiO7 framework, Na(1) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form NaO6 octahedra that share corners with two equivalent Na(1)O6 octahedra and edges with two equivalent Ni(1)O6 octahedra. The corner-sharing octahedra are not tilted. Ni(1) is bonded to two equivalent O(2) and four equivalent O(3) atoms to form NiO6 octahedra that share edges with two equivalent Na(1)O6 octahedra. There are three inequivalent O sites. In the first O site, O(2) is bonded in a single-bond geometry to one Ni(1) atom. In the second O site, O(3) is bonded in a water-like geometry to one Na(1) and one Ni(1) atom. In the third O site, O(4) is bonded in a linear geometry to two equivalent Na(1) atoms. is represented by the CIF file [CIF]
data_NaNiPO11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.417
_cell_length_b   6.417
_cell_length_c   9.779
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   402.634
_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
  Na  Na0  1  0.000  0.000  0.000  1.0
  Na  Na1  1  0.000  0.000  0.500  1.0
  Ni  Ni2  1  0.000  0.500  0.500  1.0
  Ni  Ni3  1  0.500  0.000  0.000  1.0
  P  P4  1  0.500  0.500  0.750  1.0
  P  P5  1  0.500  0.500  0.250  1.0
  O  O6  1  0.500  0.702  0.660  1.0
  O  O7  1  0.500  0.298  0.660  1.0
  O  O8  1  0.298  0.500  0.160  1.0
  O  O9  1  0.702  0.500  0.160  1.0
  O  O10  1  0.500  0.702  0.340  1.0
  O  O11  1  0.500  0.298  0.340  1.0
  O  O12  1  0.702  0.500  0.840  1.0
  O  O13  1  0.298  0.500  0.840  1.0
  O  O14  1  0.000  0.500  0.687  1.0
  O  O15  1  0.500  0.000  0.187  1.0
  O  O16  1  0.000  0.500  0.313  1.0
  O  O17  1  0.500  0.000  0.813  1.0
  O  O18  1  0.198  0.705  0.500  1.0
  O  O19  1  0.802  0.295  0.500  1.0
  O  O20  1  0.295  0.198  0.000  1.0
  O  O21  1  0.705  0.802  0.000  1.0
  O  O22  1  0.802  0.705  0.500  1.0
  O  O23  1  0.198  0.295  0.500  1.0
  O  O24  1  0.705  0.198  0.000  1.0
  O  O25  1  0.295  0.802  0.000  1.0
  O  O26  1  0.000  0.000  0.750  1.0
  O  O27  1  0.000  0.000  0.250  1.0
[/CIF]
.