The material structure described by Na2OsO7 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(6) atom. Os(1) is bonded in a distorted trigonal bipyramidal geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Na(1), one Na(2), and one Os(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Os(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1) and one Os(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one Os(1) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one O(7) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Na(2), and one Os(1) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Na(1) and one O(5) atom. is represented by the CIF card [CIF]
data_Na2OsO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.244
_cell_length_b   6.201
_cell_length_c   6.225
_cell_angle_alpha   84.959
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   355.456
_cell_formula_units_Z   2
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  0.732  0.713  0.820  1.0
  Na  Na1  1  0.232  0.287  0.180  1.0
  Na  Na2  1  0.298  0.753  0.860  1.0
  Na  Na3  1  0.798  0.247  0.140  1.0
  Os  Os4  1  0.474  0.244  0.774  1.0
  Os  Os5  1  0.974  0.756  0.226  1.0
  O  O6  1  0.302  0.116  0.853  1.0
  O  O7  1  0.802  0.884  0.147  1.0
  O  O8  1  0.657  0.336  0.823  1.0
  O  O9  1  0.157  0.664  0.177  1.0
  O  O10  1  0.439  0.353  0.510  1.0
  O  O11  1  0.939  0.647  0.490  1.0
  O  O12  1  0.544  0.974  0.760  1.0
  O  O13  1  0.044  0.026  0.240  1.0
  O  O14  1  0.015  0.078  0.715  1.0
  O  O15  1  0.515  0.922  0.285  1.0
  O  O16  1  0.918  0.557  0.041  1.0
  O  O17  1  0.418  0.443  0.959  1.0
  O  O18  1  0.889  0.107  0.654  1.0
  O  O19  1  0.389  0.893  0.346  1.0
[/CIF]
.
The material structure described by Na2OsO7 crystallizes in the monoclinic P2_1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), and one O(7) atom. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(6) atom. Os(1) is bonded in a distorted trigonal bipyramidal geometry to one O(1), one O(2), one O(3), one O(4), and one O(6) atom. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a trigonal non-coplanar geometry to one Na(1), one Na(2), and one Os(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one Na(2), and one Os(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Na(1) and one Os(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Na(2), and one Os(1) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one O(7) atom. In the sixth O site, O(6) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Na(2), and one Os(1) atom. In the seventh O site, O(7) is bonded in a water-like geometry to one Na(1) and one O(5) atom. is represented by the CIF card [CIF]
data_Na2OsO7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.244
_cell_length_b   6.201
_cell_length_c   6.225
_cell_angle_alpha   84.959
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   355.456
_cell_formula_units_Z   2
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  0.732  0.713  0.820  1.0
  Na  Na1  1  0.232  0.287  0.180  1.0
  Na  Na2  1  0.298  0.753  0.860  1.0
  Na  Na3  1  0.798  0.247  0.140  1.0
  Os  Os4  1  0.474  0.244  0.774  1.0
  Os  Os5  1  0.974  0.756  0.226  1.0
  O  O6  1  0.302  0.116  0.853  1.0
  O  O7  1  0.802  0.884  0.147  1.0
  O  O8  1  0.657  0.336  0.823  1.0
  O  O9  1  0.157  0.664  0.177  1.0
  O  O10  1  0.439  0.353  0.510  1.0
  O  O11  1  0.939  0.647  0.490  1.0
  O  O12  1  0.544  0.974  0.760  1.0
  O  O13  1  0.044  0.026  0.240  1.0
  O  O14  1  0.015  0.078  0.715  1.0
  O  O15  1  0.515  0.922  0.285  1.0
  O  O16  1  0.918  0.557  0.041  1.0
  O  O17  1  0.418  0.443  0.959  1.0
  O  O18  1  0.889  0.107  0.654  1.0
  O  O19  1  0.389  0.893  0.346  1.0
[/CIF]
.