The crystal structure described by RbNa5Be8O11 crystallizes in the triclinic P-1 space group. Rb(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(3), one O(5), and one O(8) atom. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(7), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(11), one O(4), two equivalent O(6), and two equivalent O(9) atoms. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(7), and two equivalent O(8) atoms. In the fourth Na site, Na(4) is bonded in a 5-coordinate geometry to one O(11), one O(3), one O(4), one O(6), and one O(9) atom. In the fifth Na site, Na(5) is bonded in a 6-coordinate geometry to one O(7), one O(8), two equivalent O(1), and two equivalent O(2) atoms. There are eight inequivalent Be sites. In the first Be site, Be(1) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form a mixture of corner and edge-sharing BeO4 tetrahedra. In the second Be site, Be(2) is bonded in a trigonal planar geometry to one O(3), one O(5), and one O(7) atom. In the third Be site, Be(3) is bonded in a trigonal planar geometry to one O(1), one O(10), and one O(8) atom. In the fourth Be site, Be(4) is bonded in a trigonal planar geometry to one O(4), one O(7), and one O(9) atom. In the fifth Be site, Be(5) is bonded to one O(1), one O(5), one O(6), and one O(9) atom to form a mixture of corner and edge-sharing BeO4 tetrahedra. In the sixth Be site, Be(6) is bonded in a trigonal planar geometry to one O(10), one O(11), and one O(3) atom. In the seventh Be site, Be(7) is bonded to one O(1), one O(11), one O(2), and one O(9) atom to form a mixture of corner and edge-sharing BeO4 tetrahedra. In the eighth Be site, Be(8) is bonded to one O(11), one O(2), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing BeO4 tetrahedra. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), two equivalent Na(5), one Be(3), one Be(5), and one Be(7) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Na(5), one Be(1), one Be(7), and one Be(8) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Rb(1), one Na(1), one Na(3), one Na(4), one Be(2), and one Be(6) atom. In the fourth O site, O(4) is bonded to one Na(2), one Na(4), two equivalent Na(1), one Be(1), and one Be(4) atom to form distorted edge-sharing ONa4Be2 octahedra. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Rb(1), one Be(1), one Be(2), and one Be(5) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(4), two equivalent Na(2), one Be(1), one Be(5), and one Be(8) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Na(1), one Na(3), one Na(5), one Be(2), and one Be(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Rb(1), one Na(5), two equivalent Na(3), one Be(3), and one Be(8) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(4), two equivalent Na(2), one Be(4), one Be(5), and one Be(7) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Na(1), one Na(3), one Be(3), and one Be(6) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(2), one Na(4), one Be(6), one Be(7), and one Be(8) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbNa5Be8O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.487
_cell_length_b   9.510
_cell_length_c   10.761
_cell_angle_alpha   64.456
_cell_angle_beta   89.112
_cell_angle_gamma   70.240
_symmetry_Int_Tables_number   1
_cell_volume   557.014
_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
  Rb  Rb0  1  0.750  0.236  0.061  1.0
  Rb  Rb1  1  0.250  0.764  0.939  1.0
  Na  Na2  1  0.873  0.139  0.373  1.0
  Na  Na3  1  0.754  0.447  0.483  1.0
  Na  Na4  1  0.093  0.363  0.143  1.0
  Na  Na5  1  0.264  0.260  0.461  1.0
  Na  Na6  1  0.251  0.054  0.024  1.0
  Na  Na7  1  0.246  0.553  0.517  1.0
  Na  Na8  1  0.736  0.740  0.539  1.0
  Na  Na9  1  0.907  0.637  0.857  1.0
  Na  Na10  1  0.127  0.861  0.627  1.0
  Na  Na11  1  0.749  0.946  0.976  1.0
  Be  Be12  1  0.909  0.843  0.299  1.0
  Be  Be13  1  0.550  0.913  0.725  1.0
  Be  Be14  1  0.450  0.087  0.275  1.0
  Be  Be15  1  0.726  0.613  0.149  1.0
  Be  Be16  1  0.780  0.110  0.646  1.0
  Be  Be17  1  0.383  0.215  0.728  1.0
  Be  Be18  1  0.617  0.785  0.272  1.0
  Be  Be19  1  0.496  0.408  0.251  1.0
  Be  Be20  1  0.220  0.890  0.354  1.0
  Be  Be21  1  0.504  0.592  0.749  1.0
  Be  Be22  1  0.335  0.718  0.239  1.0
  Be  Be23  1  0.091  0.157  0.701  1.0
  Be  Be24  1  0.665  0.282  0.761  1.0
  Be  Be25  1  0.959  0.343  0.786  1.0
  Be  Be26  1  0.041  0.657  0.214  1.0
  Be  Be27  1  0.274  0.387  0.851  1.0
  O  O28  1  0.481  0.231  0.862  1.0
  O  O29  1  0.074  0.847  0.178  1.0
  O  O30  1  0.472  0.242  0.279  1.0
  O  O31  1  0.020  0.851  0.427  1.0
  O  O32  1  0.358  0.041  0.754  1.0
  O  O33  1  0.123  0.342  0.667  1.0
  O  O34  1  0.642  0.959  0.246  1.0
  O  O35  1  0.877  0.658  0.333  1.0
  O  O36  1  0.528  0.758  0.721  1.0
  O  O37  1  0.220  0.070  0.287  1.0
  O  O38  1  0.933  0.645  0.086  1.0
  O  O39  1  0.780  0.930  0.713  1.0
  O  O40  1  0.519  0.769  0.138  1.0
  O  O41  1  0.564  0.266  0.626  1.0
  O  O42  1  0.713  0.437  0.207  1.0
  O  O43  1  0.287  0.563  0.793  1.0
  O  O44  1  0.305  0.541  0.276  1.0
  O  O45  1  0.926  0.153  0.822  1.0
  O  O46  1  0.695  0.459  0.724  1.0
  O  O47  1  0.067  0.355  0.914  1.0
  O  O48  1  0.436  0.734  0.374  1.0
  O  O49  1  0.980  0.149  0.573  1.0
[/CIF]
.
The crystal structure described by RbNa5Be8O11 crystallizes in the triclinic P-1 space group. Rb(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(3), one O(5), and one O(8) atom. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(7), and two equivalent O(4) atoms. In the second Na site, Na(2) is bonded in a 6-coordinate geometry to one O(11), one O(4), two equivalent O(6), and two equivalent O(9) atoms. In the third Na site, Na(3) is bonded in a 5-coordinate geometry to one O(10), one O(3), one O(7), and two equivalent O(8) atoms. In the fourth Na site, Na(4) is bonded in a 5-coordinate geometry to one O(11), one O(3), one O(4), one O(6), and one O(9) atom. In the fifth Na site, Na(5) is bonded in a 6-coordinate geometry to one O(7), one O(8), two equivalent O(1), and two equivalent O(2) atoms. There are eight inequivalent Be sites. In the first Be site, Be(1) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form a mixture of corner and edge-sharing BeO4 tetrahedra. In the second Be site, Be(2) is bonded in a trigonal planar geometry to one O(3), one O(5), and one O(7) atom. In the third Be site, Be(3) is bonded in a trigonal planar geometry to one O(1), one O(10), and one O(8) atom. In the fourth Be site, Be(4) is bonded in a trigonal planar geometry to one O(4), one O(7), and one O(9) atom. In the fifth Be site, Be(5) is bonded to one O(1), one O(5), one O(6), and one O(9) atom to form a mixture of corner and edge-sharing BeO4 tetrahedra. In the sixth Be site, Be(6) is bonded in a trigonal planar geometry to one O(10), one O(11), and one O(3) atom. In the seventh Be site, Be(7) is bonded to one O(1), one O(11), one O(2), and one O(9) atom to form a mixture of corner and edge-sharing BeO4 tetrahedra. In the eighth Be site, Be(8) is bonded to one O(11), one O(2), one O(6), and one O(8) atom to form a mixture of corner and edge-sharing BeO4 tetrahedra. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), two equivalent Na(5), one Be(3), one Be(5), and one Be(7) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Na(5), one Be(1), one Be(7), and one Be(8) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Rb(1), one Na(1), one Na(3), one Na(4), one Be(2), and one Be(6) atom. In the fourth O site, O(4) is bonded to one Na(2), one Na(4), two equivalent Na(1), one Be(1), and one Be(4) atom to form distorted edge-sharing ONa4Be2 octahedra. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Rb(1), one Be(1), one Be(2), and one Be(5) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Na(4), two equivalent Na(2), one Be(1), one Be(5), and one Be(8) atom. In the seventh O site, O(7) is bonded in a 2-coordinate geometry to one Na(1), one Na(3), one Na(5), one Be(2), and one Be(4) atom. In the eighth O site, O(8) is bonded in a 2-coordinate geometry to one Rb(1), one Na(5), two equivalent Na(3), one Be(3), and one Be(8) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to one Na(4), two equivalent Na(2), one Be(4), one Be(5), and one Be(7) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Na(1), one Na(3), one Be(3), and one Be(6) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Na(2), one Na(4), one Be(6), one Be(7), and one Be(8) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_RbNa5Be8O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.487
_cell_length_b   9.510
_cell_length_c   10.761
_cell_angle_alpha   64.456
_cell_angle_beta   89.112
_cell_angle_gamma   70.240
_symmetry_Int_Tables_number   1
_cell_volume   557.014
_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
  Rb  Rb0  1  0.750  0.236  0.061  1.0
  Rb  Rb1  1  0.250  0.764  0.939  1.0
  Na  Na2  1  0.873  0.139  0.373  1.0
  Na  Na3  1  0.754  0.447  0.483  1.0
  Na  Na4  1  0.093  0.363  0.143  1.0
  Na  Na5  1  0.264  0.260  0.461  1.0
  Na  Na6  1  0.251  0.054  0.024  1.0
  Na  Na7  1  0.246  0.553  0.517  1.0
  Na  Na8  1  0.736  0.740  0.539  1.0
  Na  Na9  1  0.907  0.637  0.857  1.0
  Na  Na10  1  0.127  0.861  0.627  1.0
  Na  Na11  1  0.749  0.946  0.976  1.0
  Be  Be12  1  0.909  0.843  0.299  1.0
  Be  Be13  1  0.550  0.913  0.725  1.0
  Be  Be14  1  0.450  0.087  0.275  1.0
  Be  Be15  1  0.726  0.613  0.149  1.0
  Be  Be16  1  0.780  0.110  0.646  1.0
  Be  Be17  1  0.383  0.215  0.728  1.0
  Be  Be18  1  0.617  0.785  0.272  1.0
  Be  Be19  1  0.496  0.408  0.251  1.0
  Be  Be20  1  0.220  0.890  0.354  1.0
  Be  Be21  1  0.504  0.592  0.749  1.0
  Be  Be22  1  0.335  0.718  0.239  1.0
  Be  Be23  1  0.091  0.157  0.701  1.0
  Be  Be24  1  0.665  0.282  0.761  1.0
  Be  Be25  1  0.959  0.343  0.786  1.0
  Be  Be26  1  0.041  0.657  0.214  1.0
  Be  Be27  1  0.274  0.387  0.851  1.0
  O  O28  1  0.481  0.231  0.862  1.0
  O  O29  1  0.074  0.847  0.178  1.0
  O  O30  1  0.472  0.242  0.279  1.0
  O  O31  1  0.020  0.851  0.427  1.0
  O  O32  1  0.358  0.041  0.754  1.0
  O  O33  1  0.123  0.342  0.667  1.0
  O  O34  1  0.642  0.959  0.246  1.0
  O  O35  1  0.877  0.658  0.333  1.0
  O  O36  1  0.528  0.758  0.721  1.0
  O  O37  1  0.220  0.070  0.287  1.0
  O  O38  1  0.933  0.645  0.086  1.0
  O  O39  1  0.780  0.930  0.713  1.0
  O  O40  1  0.519  0.769  0.138  1.0
  O  O41  1  0.564  0.266  0.626  1.0
  O  O42  1  0.713  0.437  0.207  1.0
  O  O43  1  0.287  0.563  0.793  1.0
  O  O44  1  0.305  0.541  0.276  1.0
  O  O45  1  0.926  0.153  0.822  1.0
  O  O46  1  0.695  0.459  0.724  1.0
  O  O47  1  0.067  0.355  0.914  1.0
  O  O48  1  0.436  0.734  0.374  1.0
  O  O49  1  0.980  0.149  0.573  1.0
[/CIF]
.