The material structure described by Na5Eu4Si4O16F crystallizes in the tetragonal I-4 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), and four equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a distorted q6 geometry to four equivalent O(2), four equivalent O(3), and two equivalent F(1) atoms. Eu(1) is bonded in a 8-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and one F(1) atom. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), two equivalent Eu(1), and one Si(1) atom. In the second O site, O(4) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Eu(1), and one Si(1) atom. In the third O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Na(1), one Eu(1), and one Si(1) atom. In the fourth O site, O(2) is bonded in a 1-coordinate geometry to one Na(1), one Na(2), two equivalent Eu(1), and one Si(1) atom. F(1) is bonded to two equivalent Na(2) and four equivalent Eu(1) atoms to form corner-sharing FNa2Eu4 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na5Eu4Si4O16F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.760
_cell_length_b   8.760
_cell_length_c   8.759
_cell_angle_alpha   95.600
_cell_angle_beta   95.599
_cell_angle_gamma   143.599
_symmetry_Int_Tables_number   1
_cell_volume   378.917
_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  0.924  0.619  0.519  1.0
  Na  Na1  1  0.100  0.405  0.481  1.0
  Na  Na2  1  0.595  0.076  0.695  1.0
  Na  Na3  1  0.381  0.900  0.305  1.0
  Na  Na4  1  0.500  0.500  0.000  1.0
  Eu  Eu5  1  0.910  0.209  0.066  1.0
  Eu  Eu6  1  0.142  0.843  0.934  1.0
  Eu  Eu7  1  0.157  0.090  0.299  1.0
  Eu  Eu8  1  0.791  0.858  0.701  1.0
  Si  Si9  1  0.738  0.387  0.147  1.0
  Si  Si10  1  0.240  0.590  0.853  1.0
  Si  Si11  1  0.410  0.262  0.650  1.0
  Si  Si12  1  0.613  0.760  0.350  1.0
  O  O13  1  0.903  0.411  0.281  1.0
  O  O14  1  0.130  0.622  0.719  1.0
  O  O15  1  0.378  0.097  0.507  1.0
  O  O16  1  0.589  0.870  0.493  1.0
  O  O17  1  0.921  0.683  0.141  1.0
  O  O18  1  0.542  0.781  0.859  1.0
  O  O19  1  0.219  0.079  0.761  1.0
  O  O20  1  0.317  0.458  0.239  1.0
  O  O21  1  0.455  0.215  0.176  1.0
  O  O22  1  0.039  0.279  0.824  1.0
  O  O23  1  0.721  0.545  0.759  1.0
  O  O24  1  0.785  0.961  0.241  1.0
  O  O25  1  0.639  0.203  0.972  1.0
  O  O26  1  0.230  0.667  0.028  1.0
  O  O27  1  0.333  0.361  0.564  1.0
  O  O28  1  0.797  0.770  0.436  1.0
  F  F29  1  1.000  1.000  0.000  1.0
[/CIF]
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The material structure described by Na5Eu4Si4O16F crystallizes in the tetragonal I-4 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 7-coordinate geometry to one O(2), one O(3), one O(4), and four equivalent O(1) atoms. In the second Na site, Na(2) is bonded in a distorted q6 geometry to four equivalent O(2), four equivalent O(3), and two equivalent F(1) atoms. Eu(1) is bonded in a 8-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(3), two equivalent O(4), and one F(1) atom. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(3) is bonded in a 5-coordinate geometry to one Na(1), one Na(2), two equivalent Eu(1), and one Si(1) atom. In the second O site, O(4) is bonded in a 4-coordinate geometry to one Na(1), two equivalent Eu(1), and one Si(1) atom. In the third O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Na(1), one Eu(1), and one Si(1) atom. In the fourth O site, O(2) is bonded in a 1-coordinate geometry to one Na(1), one Na(2), two equivalent Eu(1), and one Si(1) atom. F(1) is bonded to two equivalent Na(2) and four equivalent Eu(1) atoms to form corner-sharing FNa2Eu4 octahedra. The corner-sharing octahedra are not tilted. is represented by the Crystallographic Information File (CIF) [CIF]
data_Na5Eu4Si4O16F
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.760
_cell_length_b   8.760
_cell_length_c   8.759
_cell_angle_alpha   95.600
_cell_angle_beta   95.599
_cell_angle_gamma   143.599
_symmetry_Int_Tables_number   1
_cell_volume   378.917
_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  0.924  0.619  0.519  1.0
  Na  Na1  1  0.100  0.405  0.481  1.0
  Na  Na2  1  0.595  0.076  0.695  1.0
  Na  Na3  1  0.381  0.900  0.305  1.0
  Na  Na4  1  0.500  0.500  0.000  1.0
  Eu  Eu5  1  0.910  0.209  0.066  1.0
  Eu  Eu6  1  0.142  0.843  0.934  1.0
  Eu  Eu7  1  0.157  0.090  0.299  1.0
  Eu  Eu8  1  0.791  0.858  0.701  1.0
  Si  Si9  1  0.738  0.387  0.147  1.0
  Si  Si10  1  0.240  0.590  0.853  1.0
  Si  Si11  1  0.410  0.262  0.650  1.0
  Si  Si12  1  0.613  0.760  0.350  1.0
  O  O13  1  0.903  0.411  0.281  1.0
  O  O14  1  0.130  0.622  0.719  1.0
  O  O15  1  0.378  0.097  0.507  1.0
  O  O16  1  0.589  0.870  0.493  1.0
  O  O17  1  0.921  0.683  0.141  1.0
  O  O18  1  0.542  0.781  0.859  1.0
  O  O19  1  0.219  0.079  0.761  1.0
  O  O20  1  0.317  0.458  0.239  1.0
  O  O21  1  0.455  0.215  0.176  1.0
  O  O22  1  0.039  0.279  0.824  1.0
  O  O23  1  0.721  0.545  0.759  1.0
  O  O24  1  0.785  0.961  0.241  1.0
  O  O25  1  0.639  0.203  0.972  1.0
  O  O26  1  0.230  0.667  0.028  1.0
  O  O27  1  0.333  0.361  0.564  1.0
  O  O28  1  0.797  0.770  0.436  1.0
  F  F29  1  1.000  1.000  0.000  1.0
[/CIF]
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