The crystal structure described by Pr5Si3O13 crystallizes in the hexagonal P6_3/m space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(3), and three equivalent O(4) atoms. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), and four equivalent O(4) atoms. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one Si(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Pr(2) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to one Pr(1), two equivalent Pr(2), and one Si(1) atom. is represented by the CIF card [CIF]
data_Pr5Si3O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.757
_cell_length_b   9.757
_cell_length_c   7.160
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   590.270
_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
  Pr  Pr0  1  0.333  0.667  0.499  1.0
  Pr  Pr1  1  0.667  0.333  0.501  1.0
  Pr  Pr2  1  0.667  0.333  0.999  1.0
  Pr  Pr3  1  0.333  0.667  0.001  1.0
  Pr  Pr4  1  0.242  0.232  0.750  1.0
  Pr  Pr5  1  0.758  0.768  0.250  1.0
  Pr  Pr6  1  0.768  0.010  0.750  1.0
  Pr  Pr7  1  0.232  0.990  0.250  1.0
  Pr  Pr8  1  0.990  0.758  0.750  1.0
  Pr  Pr9  1  0.010  0.242  0.250  1.0
  Si  Si10  1  0.028  0.399  0.750  1.0
  Si  Si11  1  0.972  0.601  0.250  1.0
  Si  Si12  1  0.601  0.630  0.750  1.0
  Si  Si13  1  0.399  0.370  0.250  1.0
  Si  Si14  1  0.370  0.972  0.750  1.0
  Si  Si15  1  0.630  0.028  0.250  1.0
  O  O16  1  0.122  0.594  0.750  1.0
  O  O17  1  0.878  0.406  0.250  1.0
  O  O18  1  0.406  0.528  0.750  1.0
  O  O19  1  0.594  0.472  0.250  1.0
  O  O20  1  0.472  0.878  0.750  1.0
  O  O21  1  0.528  0.122  0.250  1.0
  O  O22  1  0.000  0.000  0.750  1.0
  O  O23  1  0.000  0.000  0.250  1.0
  O  O24  1  0.482  0.165  0.750  1.0
  O  O25  1  0.518  0.835  0.250  1.0
  O  O26  1  0.835  0.317  0.750  1.0
  O  O27  1  0.165  0.683  0.250  1.0
  O  O28  1  0.683  0.518  0.750  1.0
  O  O29  1  0.317  0.482  0.250  1.0
  O  O30  1  0.091  0.343  0.567  1.0
  O  O31  1  0.909  0.657  0.433  1.0
  O  O32  1  0.657  0.749  0.567  1.0
  O  O33  1  0.909  0.657  0.067  1.0
  O  O34  1  0.343  0.251  0.433  1.0
  O  O35  1  0.091  0.343  0.933  1.0
  O  O36  1  0.251  0.909  0.567  1.0
  O  O37  1  0.343  0.251  0.067  1.0
  O  O38  1  0.749  0.091  0.433  1.0
  O  O39  1  0.657  0.749  0.933  1.0
  O  O40  1  0.749  0.091  0.067  1.0
  O  O41  1  0.251  0.909  0.933  1.0
[/CIF]
.
The crystal structure described by Pr5Si3O13 crystallizes in the hexagonal P6_3/m space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(3), and three equivalent O(4) atoms. In the second Pr site, Pr(2) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), and four equivalent O(4) atoms. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one Si(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to three equivalent Pr(2) atoms. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Pr(2), two equivalent Pr(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to one Pr(1), two equivalent Pr(2), and one Si(1) atom. is represented by the CIF card [CIF]
data_Pr5Si3O13
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.757
_cell_length_b   9.757
_cell_length_c   7.160
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   590.270
_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
  Pr  Pr0  1  0.333  0.667  0.499  1.0
  Pr  Pr1  1  0.667  0.333  0.501  1.0
  Pr  Pr2  1  0.667  0.333  0.999  1.0
  Pr  Pr3  1  0.333  0.667  0.001  1.0
  Pr  Pr4  1  0.242  0.232  0.750  1.0
  Pr  Pr5  1  0.758  0.768  0.250  1.0
  Pr  Pr6  1  0.768  0.010  0.750  1.0
  Pr  Pr7  1  0.232  0.990  0.250  1.0
  Pr  Pr8  1  0.990  0.758  0.750  1.0
  Pr  Pr9  1  0.010  0.242  0.250  1.0
  Si  Si10  1  0.028  0.399  0.750  1.0
  Si  Si11  1  0.972  0.601  0.250  1.0
  Si  Si12  1  0.601  0.630  0.750  1.0
  Si  Si13  1  0.399  0.370  0.250  1.0
  Si  Si14  1  0.370  0.972  0.750  1.0
  Si  Si15  1  0.630  0.028  0.250  1.0
  O  O16  1  0.122  0.594  0.750  1.0
  O  O17  1  0.878  0.406  0.250  1.0
  O  O18  1  0.406  0.528  0.750  1.0
  O  O19  1  0.594  0.472  0.250  1.0
  O  O20  1  0.472  0.878  0.750  1.0
  O  O21  1  0.528  0.122  0.250  1.0
  O  O22  1  0.000  0.000  0.750  1.0
  O  O23  1  0.000  0.000  0.250  1.0
  O  O24  1  0.482  0.165  0.750  1.0
  O  O25  1  0.518  0.835  0.250  1.0
  O  O26  1  0.835  0.317  0.750  1.0
  O  O27  1  0.165  0.683  0.250  1.0
  O  O28  1  0.683  0.518  0.750  1.0
  O  O29  1  0.317  0.482  0.250  1.0
  O  O30  1  0.091  0.343  0.567  1.0
  O  O31  1  0.909  0.657  0.433  1.0
  O  O32  1  0.657  0.749  0.567  1.0
  O  O33  1  0.909  0.657  0.067  1.0
  O  O34  1  0.343  0.251  0.433  1.0
  O  O35  1  0.091  0.343  0.933  1.0
  O  O36  1  0.251  0.909  0.567  1.0
  O  O37  1  0.343  0.251  0.067  1.0
  O  O38  1  0.749  0.091  0.433  1.0
  O  O39  1  0.657  0.749  0.933  1.0
  O  O40  1  0.749  0.091  0.067  1.0
  O  O41  1  0.251  0.909  0.933  1.0
[/CIF]
.