The crystal structure described by PON1 crystallizes in the triclinic P1 space group. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one N(1), one N(8), one O(3), and one O(7) atom to form corner-sharing PN2O2 tetrahedra. In the second P site, P(2) is bonded to one N(1), one N(7), one O(4), and one O(6) atom to form PN2O2 tetrahedra that share  a cornercorner with one P(1)N2O2 tetrahedra,  a cornercorner with one P(3)NO3 tetrahedra, and corners with two equivalent P(5)N2O2 tetrahedra. In the third P site, P(3) is bonded to one N(7), one O(1), one O(2), and one O(8) atom to form corner-sharing PNO3 tetrahedra. In the fourth P site, P(4) is bonded to one N(6), one N(8), one O(1), and one O(5) atom to form PN2O2 tetrahedra that share  a cornercorner with one P(1)N2O2 tetrahedra,  a cornercorner with one P(3)NO3 tetrahedra, and corners with two equivalent P(6)N3O tetrahedra. In the fifth P site, P(5) is bonded to one N(2), one N(4), one O(4), and one O(6) atom to form corner-sharing PN2O2 tetrahedra. In the sixth P site, P(6) is bonded to one N(3), one N(5), one N(6), and one O(5) atom to form corner-sharing PN3O tetrahedra. In the seventh P site, P(7) is bonded to one N(3), one N(4), one O(2), and one O(8) atom to form PN2O2 tetrahedra that share  a cornercorner with one P(5)N2O2 tetrahedra,  a cornercorner with one P(6)N3O tetrahedra, and corners with two equivalent P(3)NO3 tetrahedra. In the eighth P site, P(8) is bonded to one N(2), one N(5), one O(3), and one O(7) atom to form PN2O2 tetrahedra that share  a cornercorner with one P(5)N2O2 tetrahedra,  a cornercorner with one P(6)N3O tetrahedra, and corners with two equivalent P(1)N2O2 tetrahedra. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a distorted bent 120 degrees geometry to one P(1) and one P(2) atom. In the second N site, N(2) is bonded in a bent 120 degrees geometry to one P(5) and one P(8) atom. In the third N site, N(3) is bonded in a bent 120 degrees geometry to one P(6) and one P(7) atom. In the fourth N site, N(4) is bonded in a bent 120 degrees geometry to one P(5) and one P(7) atom. In the fifth N site, N(5) is bonded in a distorted bent 120 degrees geometry to one P(6) and one P(8) atom. In the sixth N site, N(6) is bonded in a bent 120 degrees geometry to one P(4) and one P(6) atom. In the seventh N site, N(7) is bonded in a distorted bent 150 degrees geometry to one P(2) and one P(3) atom. In the eighth N site, N(8) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(3) and one P(4) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one P(3) and one P(7) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(8) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one P(2) and one P(5) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(4) and one P(6) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one P(2) and one P(5) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one P(1) and one P(8) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one P(3) and one P(7) atom. is represented by the CIF card [CIF]
data_PNO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.490
_cell_length_b   7.004
_cell_length_c   9.486
_cell_angle_alpha   90.909
_cell_angle_beta   90.080
_cell_angle_gamma   90.730
_symmetry_Int_Tables_number   1
_cell_volume   298.253
_cell_formula_units_Z   8
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
  P  P0  1  0.996  0.991  0.002  1.0
  P  P1  1  0.996  0.759  0.750  1.0
  P  P2  1  0.005  0.988  0.503  1.0
  P  P3  1  0.025  0.753  0.248  1.0
  P  P4  1  0.496  0.482  0.749  1.0
  P  P5  1  0.492  0.496  0.257  1.0
  P  P6  1  0.504  0.263  0.494  1.0
  P  P7  1  0.497  0.268  0.002  1.0
  N  N8  1  0.860  0.872  0.876  1.0
  N  N9  1  0.637  0.376  0.874  1.0
  N  N10  1  0.651  0.366  0.370  1.0
  N  N11  1  0.357  0.366  0.623  1.0
  N  N12  1  0.359  0.380  0.126  1.0
  N  N13  1  0.260  0.635  0.327  1.0
  N  N14  1  0.133  0.869  0.622  1.0
  N  N15  1  0.134  0.888  0.130  1.0
  O  O16  1  0.865  0.881  0.373  1.0
  O  O17  1  0.746  0.118  0.556  1.0
  O  O18  1  0.746  0.129  0.060  1.0
  O  O19  1  0.745  0.621  0.686  1.0
  O  O20  1  0.753  0.631  0.192  1.0
  O  O21  1  0.247  0.623  0.807  1.0
  O  O22  1  0.246  0.127  0.938  1.0
  O  O23  1  0.252  0.116  0.434  1.0
[/CIF]
.
The crystal structure described by PON1 crystallizes in the triclinic P1 space group. There are eight inequivalent P sites. In the first P site, P(1) is bonded to one N(1), one N(8), one O(3), and one O(7) atom to form corner-sharing PN2O2 tetrahedra. In the second P site, P(2) is bonded to one N(1), one N(7), one O(4), and one O(6) atom to form PN2O2 tetrahedra that share  a cornercorner with one P(1)N2O2 tetrahedra,  a cornercorner with one P(3)NO3 tetrahedra, and corners with two equivalent P(5)N2O2 tetrahedra. In the third P site, P(3) is bonded to one N(7), one O(1), one O(2), and one O(8) atom to form corner-sharing PNO3 tetrahedra. In the fourth P site, P(4) is bonded to one N(6), one N(8), one O(1), and one O(5) atom to form PN2O2 tetrahedra that share  a cornercorner with one P(1)N2O2 tetrahedra,  a cornercorner with one P(3)NO3 tetrahedra, and corners with two equivalent P(6)N3O tetrahedra. In the fifth P site, P(5) is bonded to one N(2), one N(4), one O(4), and one O(6) atom to form corner-sharing PN2O2 tetrahedra. In the sixth P site, P(6) is bonded to one N(3), one N(5), one N(6), and one O(5) atom to form corner-sharing PN3O tetrahedra. In the seventh P site, P(7) is bonded to one N(3), one N(4), one O(2), and one O(8) atom to form PN2O2 tetrahedra that share  a cornercorner with one P(5)N2O2 tetrahedra,  a cornercorner with one P(6)N3O tetrahedra, and corners with two equivalent P(3)NO3 tetrahedra. In the eighth P site, P(8) is bonded to one N(2), one N(5), one O(3), and one O(7) atom to form PN2O2 tetrahedra that share  a cornercorner with one P(5)N2O2 tetrahedra,  a cornercorner with one P(6)N3O tetrahedra, and corners with two equivalent P(1)N2O2 tetrahedra. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a distorted bent 120 degrees geometry to one P(1) and one P(2) atom. In the second N site, N(2) is bonded in a bent 120 degrees geometry to one P(5) and one P(8) atom. In the third N site, N(3) is bonded in a bent 120 degrees geometry to one P(6) and one P(7) atom. In the fourth N site, N(4) is bonded in a bent 120 degrees geometry to one P(5) and one P(7) atom. In the fifth N site, N(5) is bonded in a distorted bent 120 degrees geometry to one P(6) and one P(8) atom. In the sixth N site, N(6) is bonded in a bent 120 degrees geometry to one P(4) and one P(6) atom. In the seventh N site, N(7) is bonded in a distorted bent 150 degrees geometry to one P(2) and one P(3) atom. In the eighth N site, N(8) is bonded in a bent 150 degrees geometry to one P(1) and one P(4) atom. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(3) and one P(4) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one P(3) and one P(7) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one P(1) and one P(8) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one P(2) and one P(5) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one P(4) and one P(6) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one P(2) and one P(5) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one P(1) and one P(8) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one P(3) and one P(7) atom. is represented by the CIF card [CIF]
data_PNO
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.490
_cell_length_b   7.004
_cell_length_c   9.486
_cell_angle_alpha   90.909
_cell_angle_beta   90.080
_cell_angle_gamma   90.730
_symmetry_Int_Tables_number   1
_cell_volume   298.253
_cell_formula_units_Z   8
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
  P  P0  1  0.996  0.991  0.002  1.0
  P  P1  1  0.996  0.759  0.750  1.0
  P  P2  1  0.005  0.988  0.503  1.0
  P  P3  1  0.025  0.753  0.248  1.0
  P  P4  1  0.496  0.482  0.749  1.0
  P  P5  1  0.492  0.496  0.257  1.0
  P  P6  1  0.504  0.263  0.494  1.0
  P  P7  1  0.497  0.268  0.002  1.0
  N  N8  1  0.860  0.872  0.876  1.0
  N  N9  1  0.637  0.376  0.874  1.0
  N  N10  1  0.651  0.366  0.370  1.0
  N  N11  1  0.357  0.366  0.623  1.0
  N  N12  1  0.359  0.380  0.126  1.0
  N  N13  1  0.260  0.635  0.327  1.0
  N  N14  1  0.133  0.869  0.622  1.0
  N  N15  1  0.134  0.888  0.130  1.0
  O  O16  1  0.865  0.881  0.373  1.0
  O  O17  1  0.746  0.118  0.556  1.0
  O  O18  1  0.746  0.129  0.060  1.0
  O  O19  1  0.745  0.621  0.686  1.0
  O  O20  1  0.753  0.631  0.192  1.0
  O  O21  1  0.247  0.623  0.807  1.0
  O  O22  1  0.246  0.127  0.938  1.0
  O  O23  1  0.252  0.116  0.434  1.0
[/CIF]
.