The compound described by Na3AlSiTe4 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one Te(3), two equivalent Te(2), and two equivalent Te(4) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one Te(1), one Te(2), and two equivalent Te(3) atoms. In the third Na site, Na(3) is bonded in a 3-coordinate geometry to one Te(1), one Te(2), and two equivalent Te(4) atoms. Al(1) is bonded in a 4-coordinate geometry to one Te(1), one Te(4), and two equivalent Te(2) atoms. Si(1) is bonded in a rectangular see-saw-like geometry to one Te(1), one Te(4), and two equivalent Te(3) atoms. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Al(1), and one Si(1) atom. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), and two equivalent Al(1) atoms. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), and two equivalent Si(1) atoms. In the fourth Te site, Te(4) is bonded in a 6-coordinate geometry to two equivalent Na(1), two equivalent Na(3), one Al(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Na3AlSiTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.369
_cell_length_b   7.947
_cell_length_c   10.081
_cell_angle_alpha   121.209
_cell_angle_beta   90.049
_cell_angle_gamma   100.655
_symmetry_Int_Tables_number   1
_cell_volume   292.222
_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  0.440  0.967  0.410  1.0
  Na  Na1  1  0.931  1.000  0.123  1.0
  Na  Na2  1  0.423  0.144  0.893  1.0
  Al  Al3  1  0.331  0.570  0.918  1.0
  Si  Si4  1  0.108  0.454  0.532  1.0
  Te  Te5  1  0.618  0.754  0.788  1.0
  Te  Te6  1  0.847  0.592  0.099  1.0
  Te  Te7  1  0.515  0.299  0.325  1.0
  Te  Te8  1  0.038  0.220  0.663  1.0
[/CIF]
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The compound described by Na3AlSiTe4 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 4-coordinate geometry to one Te(3), two equivalent Te(2), and two equivalent Te(4) atoms. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one Te(1), one Te(2), and two equivalent Te(3) atoms. In the third Na site, Na(3) is bonded in a 3-coordinate geometry to one Te(1), one Te(2), and two equivalent Te(4) atoms. Al(1) is bonded in a 4-coordinate geometry to one Te(1), one Te(4), and two equivalent Te(2) atoms. Si(1) is bonded in a rectangular see-saw-like geometry to one Te(1), one Te(4), and two equivalent Te(3) atoms. There are four inequivalent Te sites. In the first Te site, Te(1) is bonded in a 4-coordinate geometry to one Na(2), one Na(3), one Al(1), and one Si(1) atom. In the second Te site, Te(2) is bonded in a 6-coordinate geometry to one Na(2), one Na(3), two equivalent Na(1), and two equivalent Al(1) atoms. In the third Te site, Te(3) is bonded in a 5-coordinate geometry to one Na(1), two equivalent Na(2), and two equivalent Si(1) atoms. In the fourth Te site, Te(4) is bonded in a 6-coordinate geometry to two equivalent Na(1), two equivalent Na(3), one Al(1), and one Si(1) atom. is represented by the CIF card [CIF]
data_Na3AlSiTe4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.369
_cell_length_b   7.947
_cell_length_c   10.081
_cell_angle_alpha   121.209
_cell_angle_beta   90.049
_cell_angle_gamma   100.655
_symmetry_Int_Tables_number   1
_cell_volume   292.222
_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  0.440  0.967  0.410  1.0
  Na  Na1  1  0.931  1.000  0.123  1.0
  Na  Na2  1  0.423  0.144  0.893  1.0
  Al  Al3  1  0.331  0.570  0.918  1.0
  Si  Si4  1  0.108  0.454  0.532  1.0
  Te  Te5  1  0.618  0.754  0.788  1.0
  Te  Te6  1  0.847  0.592  0.099  1.0
  Te  Te7  1  0.515  0.299  0.325  1.0
  Te  Te8  1  0.038  0.220  0.663  1.0
[/CIF]
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