The structure described by Na3N2O9 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(4), one O(8), and two equivalent O(1) atoms to form distorted corner-sharing NaO4 trigonal pyramids. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(2), one O(7), two equivalent O(3), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(5), two equivalent O(8), and two equivalent O(9) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one O(4) and one O(6) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(3), one O(7), and one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Na(1) and one O(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Na(2) and one O(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Na(2) and one N(2) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Na(1) and one N(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Na(3) and one O(7) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Na(2) and one N(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Na(2), one N(2), and one O(5) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Na(1) and two equivalent Na(3) atoms. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to two equivalent Na(3) and one N(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3N2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.186
_cell_length_b   4.327
_cell_length_c   12.619
_cell_angle_alpha   86.074
_cell_angle_beta   82.362
_cell_angle_gamma   82.576
_symmetry_Int_Tables_number   1
_cell_volume   224.298
_cell_formula_units_Z   1
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  0.230  0.440  0.137  1.0
  Na  Na1  1  0.971  0.003  0.503  1.0
  Na  Na2  1  0.690  0.654  0.872  1.0
  N  N3  1  0.813  0.599  0.347  1.0
  N  N4  1  0.285  0.365  0.672  1.0
  O  O5  1  0.385  0.908  0.196  1.0
  O  O6  1  0.374  0.938  0.297  1.0
  O  O7  1  0.140  0.447  0.594  1.0
  O  O8  1  0.838  0.371  0.288  1.0
  O  O9  1  0.734  0.014  0.729  1.0
  O  O10  1  0.759  0.548  0.447  1.0
  O  O11  1  0.543  0.082  0.650  1.0
  O  O12  1  0.157  0.636  0.974  1.0
  O  O13  1  0.266  0.474  0.759  1.0
[/CIF]
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The structure described by Na3N2O9 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded to one O(4), one O(8), and two equivalent O(1) atoms to form distorted corner-sharing NaO4 trigonal pyramids. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(2), one O(7), two equivalent O(3), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(5), two equivalent O(8), and two equivalent O(9) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a bent 120 degrees geometry to one O(4) and one O(6) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one O(3), one O(7), and one O(9) atom. There are nine inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Na(1) and one O(2) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Na(2) and one O(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to two equivalent Na(2) and one N(2) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Na(1) and one N(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Na(3) and one O(7) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Na(2) and one N(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Na(2), one N(2), and one O(5) atom. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Na(1) and two equivalent Na(3) atoms. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to two equivalent Na(3) and one N(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na3N2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.186
_cell_length_b   4.327
_cell_length_c   12.619
_cell_angle_alpha   86.074
_cell_angle_beta   82.362
_cell_angle_gamma   82.576
_symmetry_Int_Tables_number   1
_cell_volume   224.298
_cell_formula_units_Z   1
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  0.230  0.440  0.137  1.0
  Na  Na1  1  0.971  0.003  0.503  1.0
  Na  Na2  1  0.690  0.654  0.872  1.0
  N  N3  1  0.813  0.599  0.347  1.0
  N  N4  1  0.285  0.365  0.672  1.0
  O  O5  1  0.385  0.908  0.196  1.0
  O  O6  1  0.374  0.938  0.297  1.0
  O  O7  1  0.140  0.447  0.594  1.0
  O  O8  1  0.838  0.371  0.288  1.0
  O  O9  1  0.734  0.014  0.729  1.0
  O  O10  1  0.759  0.548  0.447  1.0
  O  O11  1  0.543  0.082  0.650  1.0
  O  O12  1  0.157  0.636  0.974  1.0
  O  O13  1  0.266  0.474  0.759  1.0
[/CIF]
.