The crystal structure described by NH4NO3 is Indium-like structured and crystallizes in the orthorhombic Pna2_1 space group. The structure is zero-dimensional and consists of four ammonia molecules and four N(OH)3 clusters. In each N(OH)3 cluster, N(2) is bonded in a water-like geometry to one O(1) and one O(2) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to one O(1) and one O(3) atom. In the second H site, H(3) is bonded in a single-bond geometry to one O(3) atom. In the third H site, H(4) is bonded in a single-bond geometry to one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one N(2) and one H(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one N(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one H(1), one H(3), and one H(4) atom. is represented by the CIF file [CIF]
data_H4N2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.204
_cell_length_b   7.902
_cell_length_c   8.003
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   455.575
_cell_formula_units_Z   4
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
  H  H0  1  0.833  0.536  0.674  1.0
  H  H1  1  0.667  0.036  0.674  1.0
  H  H2  1  0.167  0.464  0.174  1.0
  H  H3  1  0.333  0.964  0.174  1.0
  H  H4  1  0.735  0.381  0.155  1.0
  H  H5  1  0.996  0.600  0.454  1.0
  H  H6  1  0.830  0.726  0.465  1.0
  H  H7  1  0.265  0.619  0.655  1.0
  H  H8  1  0.004  0.400  0.954  1.0
  H  H9  1  0.170  0.274  0.965  1.0
  H  H10  1  0.496  0.900  0.954  1.0
  H  H11  1  0.330  0.774  0.965  1.0
  H  H12  1  0.235  0.119  0.655  1.0
  H  H13  1  0.504  0.100  0.454  1.0
  H  H14  1  0.670  0.226  0.465  1.0
  H  H15  1  0.765  0.881  0.155  1.0
  N  N16  1  0.238  0.145  0.783  1.0
  N  N17  1  0.262  0.645  0.783  1.0
  N  N18  1  0.762  0.855  0.283  1.0
  N  N19  1  0.738  0.355  0.283  1.0
  N  N20  1  0.619  0.442  0.792  1.0
  N  N21  1  0.881  0.942  0.792  1.0
  N  N22  1  0.381  0.558  0.292  1.0
  N  N23  1  0.119  0.058  0.292  1.0
  O  O24  1  0.810  0.464  0.781  1.0
  O  O25  1  0.690  0.964  0.781  1.0
  O  O26  1  0.190  0.536  0.281  1.0
  O  O27  1  0.310  0.036  0.281  1.0
  O  O28  1  0.577  0.364  0.916  1.0
  O  O29  1  0.905  0.647  0.532  1.0
  O  O30  1  0.423  0.636  0.416  1.0
  O  O31  1  0.095  0.353  0.032  1.0
  O  O32  1  0.405  0.853  0.032  1.0
  O  O33  1  0.077  0.136  0.416  1.0
  O  O34  1  0.595  0.147  0.532  1.0
  O  O35  1  0.923  0.864  0.916  1.0
[/CIF]
.
The crystal structure described by NH4NO3 is Indium-like structured and crystallizes in the orthorhombic Pna2_1 space group. The structure is zero-dimensional and consists of four ammonia molecules and four N(OH)3 clusters. In each N(OH)3 cluster, N(2) is bonded in a water-like geometry to one O(1) and one O(2) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a linear geometry to one O(1) and one O(3) atom. In the second H site, H(3) is bonded in a single-bond geometry to one O(3) atom. In the third H site, H(4) is bonded in a single-bond geometry to one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one N(2) and one H(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one N(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one H(1), one H(3), and one H(4) atom. is represented by the CIF file [CIF]
data_H4N2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.204
_cell_length_b   7.902
_cell_length_c   8.003
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   455.575
_cell_formula_units_Z   4
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
  H  H0  1  0.833  0.536  0.674  1.0
  H  H1  1  0.667  0.036  0.674  1.0
  H  H2  1  0.167  0.464  0.174  1.0
  H  H3  1  0.333  0.964  0.174  1.0
  H  H4  1  0.735  0.381  0.155  1.0
  H  H5  1  0.996  0.600  0.454  1.0
  H  H6  1  0.830  0.726  0.465  1.0
  H  H7  1  0.265  0.619  0.655  1.0
  H  H8  1  0.004  0.400  0.954  1.0
  H  H9  1  0.170  0.274  0.965  1.0
  H  H10  1  0.496  0.900  0.954  1.0
  H  H11  1  0.330  0.774  0.965  1.0
  H  H12  1  0.235  0.119  0.655  1.0
  H  H13  1  0.504  0.100  0.454  1.0
  H  H14  1  0.670  0.226  0.465  1.0
  H  H15  1  0.765  0.881  0.155  1.0
  N  N16  1  0.238  0.145  0.783  1.0
  N  N17  1  0.262  0.645  0.783  1.0
  N  N18  1  0.762  0.855  0.283  1.0
  N  N19  1  0.738  0.355  0.283  1.0
  N  N20  1  0.619  0.442  0.792  1.0
  N  N21  1  0.881  0.942  0.792  1.0
  N  N22  1  0.381  0.558  0.292  1.0
  N  N23  1  0.119  0.058  0.292  1.0
  O  O24  1  0.810  0.464  0.781  1.0
  O  O25  1  0.690  0.964  0.781  1.0
  O  O26  1  0.190  0.536  0.281  1.0
  O  O27  1  0.310  0.036  0.281  1.0
  O  O28  1  0.577  0.364  0.916  1.0
  O  O29  1  0.905  0.647  0.532  1.0
  O  O30  1  0.423  0.636  0.416  1.0
  O  O31  1  0.095  0.353  0.032  1.0
  O  O32  1  0.405  0.853  0.032  1.0
  O  O33  1  0.077  0.136  0.416  1.0
  O  O34  1  0.595  0.147  0.532  1.0
  O  O35  1  0.923  0.864  0.916  1.0
[/CIF]
.