The material structure described by NaY9Si6O26 crystallizes in the trigonal P3 space group. Na(1) is bonded in a 9-coordinate geometry to three equivalent O(10), three equivalent O(4), and three equivalent O(6) atoms. There are five inequivalent Y sites. In the first Y site, Y(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), one O(7), and one O(9) atom. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), and one O(8) atom. In the third Y site, Y(3) is bonded in a 9-coordinate geometry to three equivalent O(3), three equivalent O(5), and three equivalent O(9) atoms. In the fourth Y site, Y(4) is bonded in a 9-coordinate geometry to three equivalent O(2), three equivalent O(5), and three equivalent O(9) atoms. In the fifth Y site, Y(5) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(10), and three equivalent O(6) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a tetrahedral geometry to one O(1), one O(4), one O(6), and one O(9) atom. In the second Si site, Si(2) is bonded in a tetrahedral geometry to one O(10), one O(2), one O(3), and one O(5) atom. There are ten inequivalent O sites. In the first O site, O(7) is bonded in a trigonal planar geometry to three equivalent Y(1) atoms. In the second O site, O(8) is bonded in a trigonal planar geometry to three equivalent Y(2) atoms. In the third O site, O(9) is bonded in a 4-coordinate geometry to one Y(1), one Y(3), one Y(4), and one Si(1) atom. In the fourth O site, O(10) is bonded in a 4-coordinate geometry to one Na(1), one Y(2), one Y(5), and one Si(2) atom. In the fifth O site, O(1) is bonded in a 3-coordinate geometry to one Y(1), one Y(2), one Y(5), and one Si(1) atom. In the sixth O site, O(2) is bonded in a 4-coordinate geometry to one Y(1), one Y(2), one Y(4), and one Si(2) atom. In the seventh O site, O(3) is bonded in a 4-coordinate geometry to one Y(1), one Y(2), one Y(3), and one Si(2) atom. In the eighth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), one Y(2), and one Si(1) atom. In the ninth O site, O(5) is bonded to one Y(2), one Y(3), one Y(4), and one Si(2) atom to form distorted edge-sharing OY3Si tetrahedra. In the tenth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Y(1), one Y(5), and one Si(1) atom. is represented by the CIF file [CIF]
data_NaY9(Si3O13)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.454
_cell_length_b   9.454
_cell_length_c   6.834
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   528.939
_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  0.667  0.333  0.496  1.0
  Y  Y1  1  0.567  0.902  0.749  1.0
  Y  Y2  1  0.098  0.666  0.749  1.0
  Y  Y3  1  0.334  0.433  0.749  1.0
  Y  Y4  1  0.095  0.432  0.250  1.0
  Y  Y5  1  0.568  0.663  0.250  1.0
  Y  Y6  1  0.337  0.905  0.250  1.0
  Y  Y7  1  0.000  0.000  0.998  1.0
  Y  Y8  1  0.000  0.000  0.501  1.0
  Y  Y9  1  0.667  0.333  0.002  1.0
  Si  Si10  1  0.706  0.638  0.749  1.0
  Si  Si11  1  0.362  0.068  0.749  1.0
  Si  Si12  1  0.932  0.294  0.749  1.0
  Si  Si13  1  0.963  0.693  0.247  1.0
  Si  Si14  1  0.307  0.269  0.247  1.0
  Si  Si15  1  0.731  0.037  0.247  1.0
  O  O16  1  0.582  0.578  0.940  1.0
  O  O17  1  0.422  0.004  0.940  1.0
  O  O18  1  0.996  0.418  0.940  1.0
  O  O19  1  0.083  0.760  0.441  1.0
  O  O20  1  0.240  0.323  0.441  1.0
  O  O21  1  0.677  0.917  0.441  1.0
  O  O22  1  0.088  0.766  0.058  1.0
  O  O23  1  0.234  0.323  0.058  1.0
  O  O24  1  0.677  0.912  0.058  1.0
  O  O25  1  0.579  0.586  0.564  1.0
  O  O26  1  0.414  0.993  0.564  1.0
  O  O27  1  0.007  0.421  0.564  1.0
  O  O28  1  0.864  0.797  0.250  1.0
  O  O29  1  0.203  0.066  0.250  1.0
  O  O30  1  0.934  0.136  0.250  1.0
  O  O31  1  0.811  0.545  0.764  1.0
  O  O32  1  0.455  0.266  0.764  1.0
  O  O33  1  0.734  0.189  0.764  1.0
  O  O34  1  0.333  0.667  0.754  1.0
  O  O35  1  0.333  0.667  0.251  1.0
  O  O36  1  0.827  0.838  0.749  1.0
  O  O37  1  0.162  0.989  0.749  1.0
  O  O38  1  0.011  0.173  0.749  1.0
  O  O39  1  0.852  0.498  0.238  1.0
  O  O40  1  0.502  0.354  0.238  1.0
  O  O41  1  0.646  0.148  0.238  1.0
[/CIF]
.
The material structure described by NaY9Si6O26 crystallizes in the trigonal P3 space group. Na(1) is bonded in a 9-coordinate geometry to three equivalent O(10), three equivalent O(4), and three equivalent O(6) atoms. There are five inequivalent Y sites. In the first Y site, Y(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(6), one O(7), and one O(9) atom. In the second Y site, Y(2) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), and one O(8) atom. In the third Y site, Y(3) is bonded in a 9-coordinate geometry to three equivalent O(3), three equivalent O(5), and three equivalent O(9) atoms. In the fourth Y site, Y(4) is bonded in a 9-coordinate geometry to three equivalent O(2), three equivalent O(5), and three equivalent O(9) atoms. In the fifth Y site, Y(5) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(10), and three equivalent O(6) atoms. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a tetrahedral geometry to one O(1), one O(4), one O(6), and one O(9) atom. In the second Si site, Si(2) is bonded in a tetrahedral geometry to one O(10), one O(2), one O(3), and one O(5) atom. There are ten inequivalent O sites. In the first O site, O(7) is bonded in a trigonal planar geometry to three equivalent Y(1) atoms. In the second O site, O(8) is bonded in a trigonal planar geometry to three equivalent Y(2) atoms. In the third O site, O(9) is bonded in a 4-coordinate geometry to one Y(1), one Y(3), one Y(4), and one Si(1) atom. In the fourth O site, O(10) is bonded in a 4-coordinate geometry to one Na(1), one Y(2), one Y(5), and one Si(2) atom. In the fifth O site, O(1) is bonded in a 3-coordinate geometry to one Y(1), one Y(2), one Y(5), and one Si(1) atom. In the sixth O site, O(2) is bonded in a 4-coordinate geometry to one Y(1), one Y(2), one Y(4), and one Si(2) atom. In the seventh O site, O(3) is bonded in a 4-coordinate geometry to one Y(1), one Y(2), one Y(3), and one Si(2) atom. In the eighth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Y(1), one Y(2), and one Si(1) atom. In the ninth O site, O(5) is bonded to one Y(2), one Y(3), one Y(4), and one Si(2) atom to form distorted edge-sharing OY3Si tetrahedra. In the tenth O site, O(6) is bonded in a 4-coordinate geometry to one Na(1), one Y(1), one Y(5), and one Si(1) atom. is represented by the CIF file [CIF]
data_NaY9(Si3O13)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.454
_cell_length_b   9.454
_cell_length_c   6.834
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   528.939
_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  0.667  0.333  0.496  1.0
  Y  Y1  1  0.567  0.902  0.749  1.0
  Y  Y2  1  0.098  0.666  0.749  1.0
  Y  Y3  1  0.334  0.433  0.749  1.0
  Y  Y4  1  0.095  0.432  0.250  1.0
  Y  Y5  1  0.568  0.663  0.250  1.0
  Y  Y6  1  0.337  0.905  0.250  1.0
  Y  Y7  1  0.000  0.000  0.998  1.0
  Y  Y8  1  0.000  0.000  0.501  1.0
  Y  Y9  1  0.667  0.333  0.002  1.0
  Si  Si10  1  0.706  0.638  0.749  1.0
  Si  Si11  1  0.362  0.068  0.749  1.0
  Si  Si12  1  0.932  0.294  0.749  1.0
  Si  Si13  1  0.963  0.693  0.247  1.0
  Si  Si14  1  0.307  0.269  0.247  1.0
  Si  Si15  1  0.731  0.037  0.247  1.0
  O  O16  1  0.582  0.578  0.940  1.0
  O  O17  1  0.422  0.004  0.940  1.0
  O  O18  1  0.996  0.418  0.940  1.0
  O  O19  1  0.083  0.760  0.441  1.0
  O  O20  1  0.240  0.323  0.441  1.0
  O  O21  1  0.677  0.917  0.441  1.0
  O  O22  1  0.088  0.766  0.058  1.0
  O  O23  1  0.234  0.323  0.058  1.0
  O  O24  1  0.677  0.912  0.058  1.0
  O  O25  1  0.579  0.586  0.564  1.0
  O  O26  1  0.414  0.993  0.564  1.0
  O  O27  1  0.007  0.421  0.564  1.0
  O  O28  1  0.864  0.797  0.250  1.0
  O  O29  1  0.203  0.066  0.250  1.0
  O  O30  1  0.934  0.136  0.250  1.0
  O  O31  1  0.811  0.545  0.764  1.0
  O  O32  1  0.455  0.266  0.764  1.0
  O  O33  1  0.734  0.189  0.764  1.0
  O  O34  1  0.333  0.667  0.754  1.0
  O  O35  1  0.333  0.667  0.251  1.0
  O  O36  1  0.827  0.838  0.749  1.0
  O  O37  1  0.162  0.989  0.749  1.0
  O  O38  1  0.011  0.173  0.749  1.0
  O  O39  1  0.852  0.498  0.238  1.0
  O  O40  1  0.502  0.354  0.238  1.0
  O  O41  1  0.646  0.148  0.238  1.0
[/CIF]
.