The material structure described by Sr2PrF6 is Fluorite-derived structured and crystallizes in the orthorhombic Immm space group. Sr(1) is bonded in a body-centered cubic geometry to two equivalent F(1) and six equivalent F(2) atoms. Pr(1) is bonded in a body-centered cubic geometry to four equivalent F(1) and four equivalent F(2) atoms. There are two inequivalent F sites. In the first F site, F(1) is bonded to two equivalent Sr(1) and two equivalent Pr(1) atoms to form FSr2Pr2 tetrahedra that share corners with four equivalent F(1)Sr2Pr2 tetrahedra, corners with twelve equivalent F(2)Sr3Pr tetrahedra, edges with two equivalent F(1)Sr2Pr2 tetrahedra, and edges with four equivalent F(2)Sr3Pr tetrahedra. In the second F site, F(2) is bonded to three equivalent Sr(1) and one Pr(1) atom to form FSr3Pr tetrahedra that share corners with six equivalent F(1)Sr2Pr2 tetrahedra, corners with ten equivalent F(2)Sr3Pr tetrahedra, edges with two equivalent F(1)Sr2Pr2 tetrahedra, and edges with four equivalent F(2)Sr3Pr tetrahedra. is represented by the CIF card [CIF]
data_Sr2PrF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.170
_cell_length_b   7.170
_cell_length_c   7.170
_cell_angle_alpha   147.388
_cell_angle_beta   129.737
_cell_angle_gamma   61.210
_symmetry_Int_Tables_number   1
_cell_volume   151.298
_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
  Sr  Sr0  1  0.671  0.671  0.000  1.0
  Sr  Sr1  1  0.329  0.329  0.000  1.0
  Pr  Pr2  1  0.000  0.000  0.000  1.0
  F  F3  1  0.734  0.500  0.234  1.0
  F  F4  1  0.414  0.162  0.252  1.0
  F  F5  1  0.090  0.838  0.252  1.0
  F  F6  1  0.266  0.500  0.766  1.0
  F  F7  1  0.910  0.162  0.748  1.0
  F  F8  1  0.586  0.838  0.748  1.0
[/CIF]
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The material structure described by Sr2PrF6 is Fluorite-derived structured and crystallizes in the orthorhombic Immm space group. Sr(1) is bonded in a body-centered cubic geometry to two equivalent F(1) and six equivalent F(2) atoms. Pr(1) is bonded in a body-centered cubic geometry to four equivalent F(1) and four equivalent F(2) atoms. There are two inequivalent F sites. In the first F site, F(1) is bonded to two equivalent Sr(1) and two equivalent Pr(1) atoms to form FSr2Pr2 tetrahedra that share corners with four equivalent F(1)Sr2Pr2 tetrahedra, corners with twelve equivalent F(2)Sr3Pr tetrahedra, edges with two equivalent F(1)Sr2Pr2 tetrahedra, and edges with four equivalent F(2)Sr3Pr tetrahedra. In the second F site, F(2) is bonded to three equivalent Sr(1) and one Pr(1) atom to form FSr3Pr tetrahedra that share corners with six equivalent F(1)Sr2Pr2 tetrahedra, corners with ten equivalent F(2)Sr3Pr tetrahedra, edges with two equivalent F(1)Sr2Pr2 tetrahedra, and edges with four equivalent F(2)Sr3Pr tetrahedra. is represented by the CIF card [CIF]
data_Sr2PrF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.170
_cell_length_b   7.170
_cell_length_c   7.170
_cell_angle_alpha   147.388
_cell_angle_beta   129.737
_cell_angle_gamma   61.210
_symmetry_Int_Tables_number   1
_cell_volume   151.298
_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
  Sr  Sr0  1  0.671  0.671  0.000  1.0
  Sr  Sr1  1  0.329  0.329  0.000  1.0
  Pr  Pr2  1  0.000  0.000  0.000  1.0
  F  F3  1  0.734  0.500  0.234  1.0
  F  F4  1  0.414  0.162  0.252  1.0
  F  F5  1  0.090  0.838  0.252  1.0
  F  F6  1  0.266  0.500  0.766  1.0
  F  F7  1  0.910  0.162  0.748  1.0
  F  F8  1  0.586  0.838  0.748  1.0
[/CIF]
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