The compound described by NaNHO2 crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 8-coordinate geometry to two equivalent H(1), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted face-sharing NaO7 pentagonal bipyramids. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one N(2), one O(1), and one O(2) atom. In the second N site, N(2) is bonded in a distorted bent 120 degrees geometry to one N(1) and one O(3) atom. H(1) is bonded in a single-bond geometry to one Na(1) and one O(4) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one N(2) atom. In the second O site, O(4) is bonded in a water-like geometry to one Na(2), two equivalent Na(1), and two equivalent H(1) atoms. In the third O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one N(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Na(2) and one N(1) atom. is represented by the CIF card [CIF]
data_NaHNO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.359
_cell_length_b   6.808
_cell_length_c   9.887
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   428.038
_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
  Na  Na0  1  0.000  0.500  0.000  1.0
  Na  Na1  1  0.000  0.000  0.000  1.0
  Na  Na2  1  0.000  0.500  0.500  1.0
  Na  Na3  1  0.000  0.000  0.500  1.0
  Na  Na4  1  0.341  0.500  0.750  1.0
  Na  Na5  1  0.659  0.000  0.250  1.0
  Na  Na6  1  0.659  0.500  0.250  1.0
  Na  Na7  1  0.341  0.000  0.750  1.0
  H  H8  1  0.838  0.606  0.724  1.0
  H  H9  1  0.162  0.106  0.276  1.0
  H  H10  1  0.838  0.394  0.776  1.0
  H  H11  1  0.162  0.894  0.224  1.0
  H  H12  1  0.162  0.394  0.276  1.0
  H  H13  1  0.838  0.894  0.724  1.0
  H  H14  1  0.162  0.606  0.224  1.0
  H  H15  1  0.838  0.106  0.776  1.0
  N  N16  1  0.579  0.750  0.525  1.0
  N  N17  1  0.421  0.250  0.475  1.0
  N  N18  1  0.579  0.250  0.975  1.0
  N  N19  1  0.421  0.750  0.025  1.0
  N  N20  1  0.390  0.750  0.475  1.0
  N  N21  1  0.610  0.250  0.525  1.0
  N  N22  1  0.390  0.250  0.025  1.0
  N  N23  1  0.610  0.750  0.975  1.0
  O  O24  1  0.739  0.750  0.440  1.0
  O  O25  1  0.261  0.250  0.560  1.0
  O  O26  1  0.739  0.250  0.060  1.0
  O  O27  1  0.261  0.750  0.940  1.0
  O  O28  1  0.618  0.750  0.657  1.0
  O  O29  1  0.382  0.250  0.343  1.0
  O  O30  1  0.618  0.250  0.843  1.0
  O  O31  1  0.382  0.750  0.157  1.0
  O  O32  1  0.241  0.750  0.572  1.0
  O  O33  1  0.759  0.250  0.428  1.0
  O  O34  1  0.241  0.250  0.928  1.0
  O  O35  1  0.759  0.750  0.072  1.0
  O  O36  1  0.937  0.500  0.750  1.0
  O  O37  1  0.063  0.000  0.250  1.0
  O  O38  1  0.063  0.500  0.250  1.0
  O  O39  1  0.937  0.000  0.750  1.0
[/CIF]
.
The compound described by NaNHO2 crystallizes in the orthorhombic Pbcm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 8-coordinate geometry to two equivalent H(1), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form distorted face-sharing NaO7 pentagonal bipyramids. There are two inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one N(2), one O(1), and one O(2) atom. In the second N site, N(2) is bonded in a distorted bent 120 degrees geometry to one N(1) and one O(3) atom. H(1) is bonded in a single-bond geometry to one Na(1) and one O(4) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one N(2) atom. In the second O site, O(4) is bonded in a water-like geometry to one Na(2), two equivalent Na(1), and two equivalent H(1) atoms. In the third O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Na(2), and one N(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to two equivalent Na(2) and one N(1) atom. is represented by the CIF card [CIF]
data_NaHNO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.359
_cell_length_b   6.808
_cell_length_c   9.887
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   428.038
_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
  Na  Na0  1  0.000  0.500  0.000  1.0
  Na  Na1  1  0.000  0.000  0.000  1.0
  Na  Na2  1  0.000  0.500  0.500  1.0
  Na  Na3  1  0.000  0.000  0.500  1.0
  Na  Na4  1  0.341  0.500  0.750  1.0
  Na  Na5  1  0.659  0.000  0.250  1.0
  Na  Na6  1  0.659  0.500  0.250  1.0
  Na  Na7  1  0.341  0.000  0.750  1.0
  H  H8  1  0.838  0.606  0.724  1.0
  H  H9  1  0.162  0.106  0.276  1.0
  H  H10  1  0.838  0.394  0.776  1.0
  H  H11  1  0.162  0.894  0.224  1.0
  H  H12  1  0.162  0.394  0.276  1.0
  H  H13  1  0.838  0.894  0.724  1.0
  H  H14  1  0.162  0.606  0.224  1.0
  H  H15  1  0.838  0.106  0.776  1.0
  N  N16  1  0.579  0.750  0.525  1.0
  N  N17  1  0.421  0.250  0.475  1.0
  N  N18  1  0.579  0.250  0.975  1.0
  N  N19  1  0.421  0.750  0.025  1.0
  N  N20  1  0.390  0.750  0.475  1.0
  N  N21  1  0.610  0.250  0.525  1.0
  N  N22  1  0.390  0.250  0.025  1.0
  N  N23  1  0.610  0.750  0.975  1.0
  O  O24  1  0.739  0.750  0.440  1.0
  O  O25  1  0.261  0.250  0.560  1.0
  O  O26  1  0.739  0.250  0.060  1.0
  O  O27  1  0.261  0.750  0.940  1.0
  O  O28  1  0.618  0.750  0.657  1.0
  O  O29  1  0.382  0.250  0.343  1.0
  O  O30  1  0.618  0.250  0.843  1.0
  O  O31  1  0.382  0.750  0.157  1.0
  O  O32  1  0.241  0.750  0.572  1.0
  O  O33  1  0.759  0.250  0.428  1.0
  O  O34  1  0.241  0.250  0.928  1.0
  O  O35  1  0.759  0.750  0.072  1.0
  O  O36  1  0.937  0.500  0.750  1.0
  O  O37  1  0.063  0.000  0.250  1.0
  O  O38  1  0.063  0.500  0.250  1.0
  O  O39  1  0.937  0.000  0.750  1.0
[/CIF]
.