The compound described by Na2N2O3 crystallizes in the monoclinic C2 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one N(1), one N(3), one N(4), two equivalent O(2), and two equivalent O(5) atoms. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one N(2), one N(3), one O(2), one O(4), one O(5), and two equivalent O(1) atoms. In the third Na site, Na(3) is bonded to one N(2), one N(3), one O(1), one O(3), and two equivalent O(4) atoms to form NaN2O4 octahedra that share corners with two equivalent Na(3)N2O4 octahedra,  a cornercorner with one O(4)Na3N tetrahedra,  a cornercorner with one N(2)Na4O trigonal bipyramid, and  an edgeedge with one Na(3)N2O4 octahedra. The corner-sharing octahedral tilt angles are 76°. There are four inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Na(1), one O(1), and one O(2) atom. In the second N site, N(2) is bonded to two equivalent Na(2), two equivalent Na(3), and one O(3) atom to form distorted NNa4O trigonal bipyramids that share corners with two equivalent Na(3)N2O4 octahedra, corners with two equivalent O(2)Na3N tetrahedra, corners with two equivalent O(4)Na3N tetrahedra, and edges with two equivalent O(4)Na3N tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the third N site, N(3) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), and one O(4) atom. In the fourth N site, N(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Na(1) and two equivalent O(5) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(3), two equivalent Na(2), and one N(1) atom. In the second O site, O(2) is bonded to one Na(2), two equivalent Na(1), and one N(1) atom to form distorted ONa3N tetrahedra that share  a cornercorner with one O(4)Na3N tetrahedra, corners with two equivalent O(2)Na3N tetrahedra, and  a cornercorner with one N(2)Na4O trigonal bipyramid. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Na(3) and one N(2) atom. In the fourth O site, O(4) is bonded to one Na(2), two equivalent Na(3), and one N(3) atom to form distorted ONa3N tetrahedra that share  a cornercorner with one Na(3)N2O4 octahedra,  a cornercorner with one O(2)Na3N tetrahedra, corners with two equivalent O(4)Na3N tetrahedra,  a cornercorner with one N(2)Na4O trigonal bipyramid, and  an edgeedge with one N(2)Na4O trigonal bipyramid. The corner-sharing octahedral tilt angles are 76°. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(1), and one N(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2N2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.500
_cell_length_b   6.500
_cell_length_c   12.236
_cell_angle_alpha   71.646
_cell_angle_beta   71.646
_cell_angle_gamma   38.954
_symmetry_Int_Tables_number   1
_cell_volume   306.394
_cell_formula_units_Z   3
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  0.937  0.725  0.595  1.0
  Na  Na1  1  0.674  0.297  0.781  1.0
  Na  Na2  1  0.269  0.056  0.929  1.0
  Na  Na3  1  0.944  0.731  0.071  1.0
  Na  Na4  1  0.703  0.326  0.219  1.0
  Na  Na5  1  0.275  0.063  0.405  1.0
  N  N6  1  0.371  0.983  0.656  1.0
  N  N7  1  0.736  0.264  0.000  1.0
  N  N8  1  0.043  0.605  0.814  1.0
  N  N9  1  0.017  0.629  0.344  1.0
  N  N10  1  0.395  0.957  0.186  1.0
  N  N11  1  0.728  0.272  0.500  1.0
  O  O12  1  0.348  0.874  0.760  1.0
  O  O13  1  0.100  0.226  0.612  1.0
  O  O14  1  0.443  0.557  0.000  1.0
  O  O15  1  0.806  0.819  0.884  1.0
  O  O16  1  0.126  0.652  0.240  1.0
  O  O17  1  0.774  0.900  0.388  1.0
  O  O18  1  0.181  0.194  0.116  1.0
  O  O19  1  0.518  0.370  0.590  1.0
  O  O20  1  0.630  0.482  0.410  1.0
[/CIF]
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The compound described by Na2N2O3 crystallizes in the monoclinic C2 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one N(1), one N(3), one N(4), two equivalent O(2), and two equivalent O(5) atoms. In the second Na site, Na(2) is bonded in a 7-coordinate geometry to one N(2), one N(3), one O(2), one O(4), one O(5), and two equivalent O(1) atoms. In the third Na site, Na(3) is bonded to one N(2), one N(3), one O(1), one O(3), and two equivalent O(4) atoms to form NaN2O4 octahedra that share corners with two equivalent Na(3)N2O4 octahedra,  a cornercorner with one O(4)Na3N tetrahedra,  a cornercorner with one N(2)Na4O trigonal bipyramid, and  an edgeedge with one Na(3)N2O4 octahedra. The corner-sharing octahedral tilt angles are 76°. There are four inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Na(1), one O(1), and one O(2) atom. In the second N site, N(2) is bonded to two equivalent Na(2), two equivalent Na(3), and one O(3) atom to form distorted NNa4O trigonal bipyramids that share corners with two equivalent Na(3)N2O4 octahedra, corners with two equivalent O(2)Na3N tetrahedra, corners with two equivalent O(4)Na3N tetrahedra, and edges with two equivalent O(4)Na3N tetrahedra. The corner-sharing octahedral tilt angles are 52°. In the third N site, N(3) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(3), and one O(4) atom. In the fourth N site, N(4) is bonded in a distorted bent 120 degrees geometry to two equivalent Na(1) and two equivalent O(5) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Na(3), two equivalent Na(2), and one N(1) atom. In the second O site, O(2) is bonded to one Na(2), two equivalent Na(1), and one N(1) atom to form distorted ONa3N tetrahedra that share  a cornercorner with one O(4)Na3N tetrahedra, corners with two equivalent O(2)Na3N tetrahedra, and  a cornercorner with one N(2)Na4O trigonal bipyramid. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Na(3) and one N(2) atom. In the fourth O site, O(4) is bonded to one Na(2), two equivalent Na(3), and one N(3) atom to form distorted ONa3N tetrahedra that share  a cornercorner with one Na(3)N2O4 octahedra,  a cornercorner with one O(2)Na3N tetrahedra, corners with two equivalent O(4)Na3N tetrahedra,  a cornercorner with one N(2)Na4O trigonal bipyramid, and  an edgeedge with one N(2)Na4O trigonal bipyramid. The corner-sharing octahedral tilt angles are 76°. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one Na(2), two equivalent Na(1), and one N(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na2N2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.500
_cell_length_b   6.500
_cell_length_c   12.236
_cell_angle_alpha   71.646
_cell_angle_beta   71.646
_cell_angle_gamma   38.954
_symmetry_Int_Tables_number   1
_cell_volume   306.394
_cell_formula_units_Z   3
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  0.937  0.725  0.595  1.0
  Na  Na1  1  0.674  0.297  0.781  1.0
  Na  Na2  1  0.269  0.056  0.929  1.0
  Na  Na3  1  0.944  0.731  0.071  1.0
  Na  Na4  1  0.703  0.326  0.219  1.0
  Na  Na5  1  0.275  0.063  0.405  1.0
  N  N6  1  0.371  0.983  0.656  1.0
  N  N7  1  0.736  0.264  0.000  1.0
  N  N8  1  0.043  0.605  0.814  1.0
  N  N9  1  0.017  0.629  0.344  1.0
  N  N10  1  0.395  0.957  0.186  1.0
  N  N11  1  0.728  0.272  0.500  1.0
  O  O12  1  0.348  0.874  0.760  1.0
  O  O13  1  0.100  0.226  0.612  1.0
  O  O14  1  0.443  0.557  0.000  1.0
  O  O15  1  0.806  0.819  0.884  1.0
  O  O16  1  0.126  0.652  0.240  1.0
  O  O17  1  0.774  0.900  0.388  1.0
  O  O18  1  0.181  0.194  0.116  1.0
  O  O19  1  0.518  0.370  0.590  1.0
  O  O20  1  0.630  0.482  0.410  1.0
[/CIF]
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