The structure described by Na6Be8O11 crystallizes in the triclinic P-1 space group. There are three 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(5), and one O(6) atom. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(4), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(4), one O(6), two equivalent O(2), and two equivalent O(5) atoms. There are four inequivalent Be sites. In the first Be site, Be(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(4) atom. In the second Be site, Be(2) is bonded to one O(1), one O(5), and two equivalent O(2) atoms to form a mixture of edge and corner-sharing BeO4 tetrahedra. In the third Be site, Be(3) is bonded to one O(1), one O(6), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing BeO4 tetrahedra. In the fourth Be site, Be(4) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Na(3), one Be(1), one Be(2), and one Be(3) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), two equivalent Na(3), one Be(4), and two equivalent Be(2) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Na(2), and two equivalent Be(1) atoms. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Na(1), one Na(3), two equivalent Na(2), one Be(1), and one Be(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), two equivalent Na(3), one Be(2), and two equivalent Be(3) atoms. In the sixth O site, O(6) is bonded to one Na(1), one Na(3), two equivalent Na(2), one Be(3), and one Be(4) atom to form distorted edge-sharing ONa4Be2 octahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na6Be8O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.211
_cell_length_b   6.383
_cell_length_c   8.238
_cell_angle_alpha   102.555
_cell_angle_beta   94.462
_cell_angle_gamma   104.595
_symmetry_Int_Tables_number   1
_cell_volume   256.248
_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  0.798  0.229  0.208  1.0
  Na  Na1  1  0.202  0.771  0.792  1.0
  Na  Na2  1  0.779  0.613  0.999  1.0
  Na  Na3  1  0.221  0.387  0.001  1.0
  Na  Na4  1  0.965  0.743  0.430  1.0
  Na  Na5  1  0.035  0.257  0.570  1.0
  Be  Be6  1  0.828  0.023  0.851  1.0
  Be  Be7  1  0.172  0.977  0.149  1.0
  Be  Be8  1  0.520  0.862  0.550  1.0
  Be  Be9  1  0.480  0.138  0.450  1.0
  Be  Be10  1  0.447  0.430  0.363  1.0
  Be  Be11  1  0.526  0.259  0.749  1.0
  Be  Be12  1  0.553  0.570  0.637  1.0
  Be  Be13  1  0.474  0.741  0.251  1.0
  O  O14  1  0.264  0.170  0.310  1.0
  O  O15  1  0.641  0.954  0.389  1.0
  O  O16  1  0.736  0.830  0.690  1.0
  O  O17  1  0.000  0.000  0.000  1.0
  O  O18  1  0.232  0.751  0.136  1.0
  O  O19  1  0.768  0.249  0.864  1.0
  O  O20  1  0.328  0.607  0.489  1.0
  O  O21  1  0.672  0.393  0.511  1.0
  O  O22  1  0.421  0.470  0.780  1.0
  O  O23  1  0.579  0.530  0.220  1.0
  O  O24  1  0.359  0.046  0.611  1.0
[/CIF]
.
The structure described by Na6Be8O11 crystallizes in the triclinic P-1 space group. There are three 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(5), and one O(6) atom. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(4), and two equivalent O(6) atoms. In the third Na site, Na(3) is bonded in a 7-coordinate geometry to one O(1), one O(4), one O(6), two equivalent O(2), and two equivalent O(5) atoms. There are four inequivalent Be sites. In the first Be site, Be(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(4) atom. In the second Be site, Be(2) is bonded to one O(1), one O(5), and two equivalent O(2) atoms to form a mixture of edge and corner-sharing BeO4 tetrahedra. In the third Be site, Be(3) is bonded to one O(1), one O(6), and two equivalent O(5) atoms to form a mixture of edge and corner-sharing BeO4 tetrahedra. In the fourth Be site, Be(4) is bonded in a trigonal planar geometry to one O(2), one O(4), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(1), one Na(3), one Be(1), one Be(2), and one Be(3) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Na(1), two equivalent Na(3), one Be(4), and two equivalent Be(2) atoms. In the third O site, O(3) is bonded in a distorted linear geometry to two equivalent Na(1), two equivalent Na(2), and two equivalent Be(1) atoms. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Na(1), one Na(3), two equivalent Na(2), one Be(1), and one Be(4) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Na(1), two equivalent Na(3), one Be(2), and two equivalent Be(3) atoms. In the sixth O site, O(6) is bonded to one Na(1), one Na(3), two equivalent Na(2), one Be(3), and one Be(4) atom to form distorted edge-sharing ONa4Be2 octahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na6Be8O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.211
_cell_length_b   6.383
_cell_length_c   8.238
_cell_angle_alpha   102.555
_cell_angle_beta   94.462
_cell_angle_gamma   104.595
_symmetry_Int_Tables_number   1
_cell_volume   256.248
_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  0.798  0.229  0.208  1.0
  Na  Na1  1  0.202  0.771  0.792  1.0
  Na  Na2  1  0.779  0.613  0.999  1.0
  Na  Na3  1  0.221  0.387  0.001  1.0
  Na  Na4  1  0.965  0.743  0.430  1.0
  Na  Na5  1  0.035  0.257  0.570  1.0
  Be  Be6  1  0.828  0.023  0.851  1.0
  Be  Be7  1  0.172  0.977  0.149  1.0
  Be  Be8  1  0.520  0.862  0.550  1.0
  Be  Be9  1  0.480  0.138  0.450  1.0
  Be  Be10  1  0.447  0.430  0.363  1.0
  Be  Be11  1  0.526  0.259  0.749  1.0
  Be  Be12  1  0.553  0.570  0.637  1.0
  Be  Be13  1  0.474  0.741  0.251  1.0
  O  O14  1  0.264  0.170  0.310  1.0
  O  O15  1  0.641  0.954  0.389  1.0
  O  O16  1  0.736  0.830  0.690  1.0
  O  O17  1  0.000  0.000  0.000  1.0
  O  O18  1  0.232  0.751  0.136  1.0
  O  O19  1  0.768  0.249  0.864  1.0
  O  O20  1  0.328  0.607  0.489  1.0
  O  O21  1  0.672  0.393  0.511  1.0
  O  O22  1  0.421  0.470  0.780  1.0
  O  O23  1  0.579  0.530  0.220  1.0
  O  O24  1  0.359  0.046  0.611  1.0
[/CIF]
.