The compound described by RbNa5Be8O11 crystallizes in the triclinic P-1 space group. Rb(1) is bonded in a 1-coordinate geometry to one O(2) and one O(5) atom. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a bent 120 degrees geometry to one O(10) and one O(4) atom. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one Be(4), one O(4), one O(6), and two equivalent O(9) atoms. In the third Na site, Na(3) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. In the fourth Na site, Na(4) is bonded in a 2-coordinate geometry to one O(11) and one O(4) atom. In the fifth Na site, Na(5) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(8) atom. There are eight inequivalent Be sites. In the first Be site, Be(1) is bonded in a 2-coordinate geometry to one O(2), one O(5), and one O(6) atom. In the second Be site, Be(2) is bonded in a distorted 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 3-coordinate geometry to one O(1), one O(10), and one O(8) atom. In the fourth Be site, Be(4) is bonded in a 3-coordinate geometry to one Na(2), one O(4), one O(7), and one O(9) atom. In the fifth Be site, Be(5) is bonded in a 3-coordinate geometry to one O(5), one O(6), and one O(9) atom. In the sixth Be site, Be(6) is bonded in a 3-coordinate geometry to one O(10), one O(11), and one O(3) atom. In the seventh Be site, Be(7) is bonded in a 3-coordinate geometry to one O(1), one O(11), and one O(2) atom. In the eighth Be site, Be(8) is bonded in a 3-coordinate geometry to one O(11), one O(2), and one O(6) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(5), one Be(3), and one Be(7) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Rb(1), one Na(5), one Be(1), one Be(7), and one Be(8) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Be(2) and one Be(6) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(4), and one Be(4) atom. In the fifth O site, O(5) is bonded in a 4-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(2), one Be(1), one Be(5), and one Be(8) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(3), one Be(2), and one Be(4) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(3), one Na(5), and one Be(3) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Be(4), and one Be(5) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Be(3), and one Be(6) atom. In the eleventh O site, O(11) is bonded in a distorted tetrahedral geometry to 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   115.544
_cell_angle_beta   89.112
_cell_angle_gamma   109.760
_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  0.250  0.297  0.939  1.0
  Rb  Rb1  1  0.750  0.703  0.061  1.0
  Na  Na2  1  0.127  0.512  0.627  1.0
  Na  Na3  1  0.246  0.930  0.517  1.0
  Na  Na4  1  0.907  0.506  0.857  1.0
  Na  Na5  1  0.736  0.721  0.539  1.0
  Na  Na6  1  0.749  0.079  0.976  1.0
  Na  Na7  1  0.754  0.070  0.483  1.0
  Na  Na8  1  0.264  0.279  0.461  1.0
  Na  Na9  1  0.093  0.494  0.143  1.0
  Na  Na10  1  0.873  0.488  0.373  1.0
  Na  Na11  1  0.251  0.921  0.024  1.0
  Be  Be12  1  0.091  0.142  0.701  1.0
  Be  Be13  1  0.450  0.638  0.275  1.0
  Be  Be14  1  0.550  0.362  0.725  1.0
  Be  Be15  1  0.274  0.762  0.851  1.0
  Be  Be16  1  0.220  0.757  0.354  1.0
  Be  Be17  1  0.617  0.944  0.272  1.0
  Be  Be18  1  0.383  0.056  0.728  1.0
  Be  Be19  1  0.504  0.659  0.749  1.0
  Be  Be20  1  0.780  0.243  0.646  1.0
  Be  Be21  1  0.496  0.341  0.251  1.0
  Be  Be22  1  0.665  0.958  0.761  1.0
  Be  Be23  1  0.909  0.858  0.299  1.0
  Be  Be24  1  0.335  0.042  0.239  1.0
  Be  Be25  1  0.041  0.129  0.214  1.0
  Be  Be26  1  0.959  0.871  0.786  1.0
  Be  Be27  1  0.726  0.238  0.149  1.0
  O  O28  1  0.519  0.093  0.138  1.0
  O  O29  1  0.926  0.025  0.822  1.0
  O  O30  1  0.528  0.521  0.721  1.0
  O  O31  1  0.980  0.277  0.573  1.0
  O  O32  1  0.642  0.795  0.246  1.0
  O  O33  1  0.877  0.009  0.333  1.0
  O  O34  1  0.358  0.205  0.754  1.0
  O  O35  1  0.123  0.991  0.667  1.0
  O  O36  1  0.472  0.479  0.279  1.0
  O  O37  1  0.780  0.357  0.713  1.0
  O  O38  1  0.067  0.731  0.914  1.0
  O  O39  1  0.220  0.643  0.287  1.0
  O  O40  1  0.481  0.907  0.862  1.0
  O  O41  1  0.436  0.892  0.374  1.0
  O  O42  1  0.287  0.644  0.793  1.0
  O  O43  1  0.713  0.356  0.207  1.0
  O  O44  1  0.695  0.817  0.724  1.0
  O  O45  1  0.074  0.975  0.178  1.0
  O  O46  1  0.305  0.183  0.276  1.0
  O  O47  1  0.933  0.269  0.086  1.0
  O  O48  1  0.564  0.108  0.626  1.0
  O  O49  1  0.020  0.723  0.427  1.0
[/CIF]
.
The compound described by RbNa5Be8O11 crystallizes in the triclinic P-1 space group. Rb(1) is bonded in a 1-coordinate geometry to one O(2) and one O(5) atom. There are five inequivalent Na sites. In the first Na site, Na(1) is bonded in a bent 120 degrees geometry to one O(10) and one O(4) atom. In the second Na site, Na(2) is bonded in a 5-coordinate geometry to one Be(4), one O(4), one O(6), and two equivalent O(9) atoms. In the third Na site, Na(3) is bonded in a distorted bent 120 degrees geometry to one O(7) and one O(8) atom. In the fourth Na site, Na(4) is bonded in a 2-coordinate geometry to one O(11) and one O(4) atom. In the fifth Na site, Na(5) is bonded in a 3-coordinate geometry to one O(1), one O(2), and one O(8) atom. There are eight inequivalent Be sites. In the first Be site, Be(1) is bonded in a 2-coordinate geometry to one O(2), one O(5), and one O(6) atom. In the second Be site, Be(2) is bonded in a distorted 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 3-coordinate geometry to one O(1), one O(10), and one O(8) atom. In the fourth Be site, Be(4) is bonded in a 3-coordinate geometry to one Na(2), one O(4), one O(7), and one O(9) atom. In the fifth Be site, Be(5) is bonded in a 3-coordinate geometry to one O(5), one O(6), and one O(9) atom. In the sixth Be site, Be(6) is bonded in a 3-coordinate geometry to one O(10), one O(11), and one O(3) atom. In the seventh Be site, Be(7) is bonded in a 3-coordinate geometry to one O(1), one O(11), and one O(2) atom. In the eighth Be site, Be(8) is bonded in a 3-coordinate geometry to one O(11), one O(2), and one O(6) atom. There are eleven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Na(5), one Be(3), and one Be(7) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one Rb(1), one Na(5), one Be(1), one Be(7), and one Be(8) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Be(2) and one Be(6) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Na(1), one Na(2), one Na(4), and one Be(4) atom. In the fifth O site, O(5) is bonded in a 4-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(2), one Be(1), one Be(5), and one Be(8) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Na(3), one Be(2), and one Be(4) atom. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one Na(3), one Na(5), and one Be(3) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to two equivalent Na(2), one Be(4), and one Be(5) atom. In the tenth O site, O(10) is bonded in a distorted trigonal non-coplanar geometry to one Na(1), one Be(3), and one Be(6) atom. In the eleventh O site, O(11) is bonded in a distorted tetrahedral geometry to 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   115.544
_cell_angle_beta   89.112
_cell_angle_gamma   109.760
_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  0.250  0.297  0.939  1.0
  Rb  Rb1  1  0.750  0.703  0.061  1.0
  Na  Na2  1  0.127  0.512  0.627  1.0
  Na  Na3  1  0.246  0.930  0.517  1.0
  Na  Na4  1  0.907  0.506  0.857  1.0
  Na  Na5  1  0.736  0.721  0.539  1.0
  Na  Na6  1  0.749  0.079  0.976  1.0
  Na  Na7  1  0.754  0.070  0.483  1.0
  Na  Na8  1  0.264  0.279  0.461  1.0
  Na  Na9  1  0.093  0.494  0.143  1.0
  Na  Na10  1  0.873  0.488  0.373  1.0
  Na  Na11  1  0.251  0.921  0.024  1.0
  Be  Be12  1  0.091  0.142  0.701  1.0
  Be  Be13  1  0.450  0.638  0.275  1.0
  Be  Be14  1  0.550  0.362  0.725  1.0
  Be  Be15  1  0.274  0.762  0.851  1.0
  Be  Be16  1  0.220  0.757  0.354  1.0
  Be  Be17  1  0.617  0.944  0.272  1.0
  Be  Be18  1  0.383  0.056  0.728  1.0
  Be  Be19  1  0.504  0.659  0.749  1.0
  Be  Be20  1  0.780  0.243  0.646  1.0
  Be  Be21  1  0.496  0.341  0.251  1.0
  Be  Be22  1  0.665  0.958  0.761  1.0
  Be  Be23  1  0.909  0.858  0.299  1.0
  Be  Be24  1  0.335  0.042  0.239  1.0
  Be  Be25  1  0.041  0.129  0.214  1.0
  Be  Be26  1  0.959  0.871  0.786  1.0
  Be  Be27  1  0.726  0.238  0.149  1.0
  O  O28  1  0.519  0.093  0.138  1.0
  O  O29  1  0.926  0.025  0.822  1.0
  O  O30  1  0.528  0.521  0.721  1.0
  O  O31  1  0.980  0.277  0.573  1.0
  O  O32  1  0.642  0.795  0.246  1.0
  O  O33  1  0.877  0.009  0.333  1.0
  O  O34  1  0.358  0.205  0.754  1.0
  O  O35  1  0.123  0.991  0.667  1.0
  O  O36  1  0.472  0.479  0.279  1.0
  O  O37  1  0.780  0.357  0.713  1.0
  O  O38  1  0.067  0.731  0.914  1.0
  O  O39  1  0.220  0.643  0.287  1.0
  O  O40  1  0.481  0.907  0.862  1.0
  O  O41  1  0.436  0.892  0.374  1.0
  O  O42  1  0.287  0.644  0.793  1.0
  O  O43  1  0.713  0.356  0.207  1.0
  O  O44  1  0.695  0.817  0.724  1.0
  O  O45  1  0.074  0.975  0.178  1.0
  O  O46  1  0.305  0.183  0.276  1.0
  O  O47  1  0.933  0.269  0.086  1.0
  O  O48  1  0.564  0.108  0.626  1.0
  O  O49  1  0.020  0.723  0.427  1.0
[/CIF]
.