The crystal structure described by NaPrF4 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted octahedral geometry to one F(1), one F(10), one F(12), one F(3), one F(5), and one F(8) atom. In the second Na site, Na(2) is bonded in a distorted octahedral geometry to one F(11), one F(2), one F(4), one F(6), one F(7), and one F(9) atom. In the third Na site, Na(3) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(11), one F(12), one F(3), one F(6), one F(7), one F(8), and one F(9) atom. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(11), one F(2), one F(3), one F(4), one F(5), one F(6), and one F(7) atom. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one F(1), one F(12), one F(2), one F(3), one F(4), one F(5), one F(6), one F(8), and one F(9) atom. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to one F(10), one F(11), one F(12), one F(2), one F(4), one F(5), one F(7), one F(8), and one F(9) atom. There are twelve inequivalent F sites. In the first F site, F(1) is bonded to one Na(1), one Na(3), one Pr(1), and one Pr(2) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(12)Na2Pr2 tetrahedra,  a cornercorner with one F(8)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(7)Na2Pr2 tetrahedra, corners with two equivalent F(9)Na2Pr2 tetrahedra, corners with two equivalent F(2)NaPr3 tetrahedra, corners with three equivalent F(6)Na2Pr2 tetrahedra, corners with four equivalent F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(4)NaPr3 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the second F site, F(2) is bonded to one Na(2), one Pr(1), one Pr(2), and one Pr(3) atom to form FNaPr3 tetrahedra that share  a cornercorner with one F(11)Na2Pr2 tetrahedra,  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(7)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra, corners with two equivalent F(1)Na2Pr2 tetrahedra, corners with two equivalent F(10)Na2Pr2 tetrahedra, corners with two equivalent F(8)Na2Pr2 tetrahedra, corners with three equivalent F(5)NaPr3 tetrahedra, corners with four equivalent F(4)NaPr3 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra, and  an edgeedge with one F(9)Na2Pr2 tetrahedra. In the third F site, F(3) is bonded to one Na(1), one Na(3), one Pr(1), and one Pr(2) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(12)Na2Pr2 tetrahedra,  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(8)Na2Pr2 tetrahedra, corners with two equivalent F(11)Na2Pr2 tetrahedra, corners with two equivalent F(9)Na2Pr2 tetrahedra, corners with two equivalent F(4)NaPr3 tetrahedra, corners with three equivalent F(5)NaPr3 tetrahedra, corners with four equivalent F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra, and  an edgeedge with one F(2)NaPr3 tetrahedra. In the fourth F site, F(4) is bonded to one Na(2), one Pr(1), one Pr(2), and one Pr(3) atom to form FNaPr3 tetrahedra that share  a cornercorner with one F(11)Na2Pr2 tetrahedra,  a cornercorner with one F(7)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(10)Na2Pr2 tetrahedra, corners with two equivalent F(12)Na2Pr2 tetrahedra, corners with two equivalent F(3)Na2Pr2 tetrahedra, corners with three equivalent F(6)Na2Pr2 tetrahedra, corners with four equivalent F(2)NaPr3 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the fifth F site, F(5) is bonded to one Na(1), one Pr(1), one Pr(2), and one Pr(3) atom to form FNaPr3 tetrahedra that share  a cornercorner with one F(1)Na2Pr2 tetrahedra,  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(12)Na2Pr2 tetrahedra,  a cornercorner with one F(8)Na2Pr2 tetrahedra,  a cornercorner with one F(4)NaPr3 tetrahedra, corners with two equivalent F(11)Na2Pr2 tetrahedra, corners with two equivalent F(6)Na2Pr2 tetrahedra, corners with two equivalent F(7)Na2Pr2 tetrahedra, corners with three equivalent F(3)Na2Pr2 tetrahedra, corners with three equivalent F(2)NaPr3 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra, and  an edgeedge with one F(4)NaPr3 tetrahedra. In the sixth F site, F(6) is bonded to one Na(2), one Na(3), one Pr(1), and one Pr(2) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(11)Na2Pr2 tetrahedra,  a cornercorner with one F(3)Na2Pr2 tetrahedra,  a cornercorner with one F(7)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra,  a cornercorner with one F(2)NaPr3 tetrahedra, corners with two equivalent F(12)Na2Pr2 tetrahedra, corners with two equivalent F(8)Na2Pr2 tetrahedra, corners with two equivalent F(5)NaPr3 tetrahedra, corners with three equivalent F(1)Na2Pr2 tetrahedra, corners with three equivalent F(4)NaPr3 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra, and  an edgeedge with one F(2)NaPr3 tetrahedra. In the seventh F site, F(7) is bonded to one Na(2), one Na(3), one Pr(1), and one Pr(3) atom to form distorted FNa2Pr2 tetrahedra that share  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(2)NaPr3 tetrahedra,  a cornercorner with one F(4)NaPr3 tetrahedra, corners with two equivalent F(1)Na2Pr2 tetrahedra, corners with two equivalent F(8)Na2Pr2 tetrahedra, corners with two equivalent F(5)NaPr3 tetrahedra, corners with three equivalent F(9)Na2Pr2 tetrahedra, corners with four equivalent F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(2)NaPr3 tetrahedra, and  an edgeedge with one F(4)NaPr3 tetrahedra. In the eighth F site, F(8) is bonded to one Na(1), one Na(3), one Pr(2), and one Pr(3) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(1)Na2Pr2 tetrahedra,  a cornercorner with one F(3)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(6)Na2Pr2 tetrahedra, corners with two equivalent F(7)Na2Pr2 tetrahedra, corners with two equivalent F(2)NaPr3 tetrahedra, corners with three equivalent F(10)Na2Pr2 tetrahedra, corners with four equivalent F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra,  an edgeedge with one F(4)NaPr3 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the ninth F site, F(9) is bonded to one Na(2), one Na(3), one Pr(2), and one Pr(3) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(11)Na2Pr2 tetrahedra,  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(8)Na2Pr2 tetrahedra,  a cornercorner with one F(2)NaPr3 tetrahedra,  a cornercorner with one F(4)NaPr3 tetrahedra, corners with two equivalent F(1)Na2Pr2 tetrahedra, corners with two equivalent F(10)Na2Pr2 tetrahedra, corners with two equivalent F(3)Na2Pr2 tetrahedra, corners with three equivalent F(12)Na2Pr2 tetrahedra, corners with three equivalent F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(2)NaPr3 tetrahedra,  an edgeedge with one F(4)NaPr3 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the tenth F site, F(10) is bonded to one Na(1), one Na(3), one Pr(1), and one Pr(3) atom to form distorted FNa2Pr2 tetrahedra that share  a cornercorner with one F(1)Na2Pr2 tetrahedra,  a cornercorner with one F(12)Na2Pr2 tetrahedra,  a cornercorner with one F(3)Na2Pr2 tetrahedra,  a cornercorner with one F(7)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(9)Na2Pr2 tetrahedra, corners with two equivalent F(2)NaPr3 tetrahedra, corners with two equivalent F(4)NaPr3 tetrahedra, corners with three equivalent F(11)Na2Pr2 tetrahedra, corners with three equivalent F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the eleventh F site, F(11) is bonded to one Na(2), one Na(3), one Pr(1), and one Pr(3) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra,  a cornercorner with one F(2)NaPr3 tetrahedra,  a cornercorner with one F(4)NaPr3 tetrahedra, corners with two equivalent F(12)Na2Pr2 tetrahedra, corners with two equivalent F(3)Na2Pr2 tetrahedra, corners with two equivalent F(5)NaPr3 tetrahedra, corners with three equivalent F(10)Na2Pr2 tetrahedra, corners with four equivalent F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra,  an edgeedge with one F(2)NaPr3 tetrahedra, and  an edgeedge with one F(4)NaPr3 tetrahedra. In the twelfth F site, F(12) is bonded to one Na(1), one Na(3), one Pr(2), and one Pr(3) atom to form distorted FNa2Pr2 tetrahedra that share  a cornercorner with one F(1)Na2Pr2 tetrahedra,  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(3)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(11)Na2Pr2 tetrahedra, corners with two equivalent F(6)Na2Pr2 tetrahedra, corners with two equivalent F(4)NaPr3 tetrahedra, corners with three equivalent F(9)Na2Pr2 tetrahedra, corners with four equivalent F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(2)NaPr3 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. is represented by the CIF card [CIF]
data_NaPrF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.091
_cell_length_b   7.130
_cell_length_c   7.141
_cell_angle_alpha   63.298
_cell_angle_beta   64.832
_cell_angle_gamma   64.807
_symmetry_Int_Tables_number   1
_cell_volume   239.941
_cell_formula_units_Z   3
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  0.669  0.470  0.179  1.0
  Na  Na1  1  0.662  0.991  0.695  1.0
  Na  Na2  1  0.330  0.423  0.913  1.0
  Pr  Pr3  1  0.003  0.994  0.002  1.0
  Pr  Pr4  1  0.997  0.494  0.510  1.0
  Pr  Pr5  1  0.335  0.917  0.413  1.0
  F  F6  1  0.262  0.620  0.134  1.0
  F  F7  1  0.280  0.125  0.630  1.0
  F  F8  1  0.980  0.377  0.890  1.0
  F  F9  1  0.970  0.884  0.391  1.0
  F  F10  1  0.756  0.728  0.236  1.0
  F  F11  1  0.753  0.236  0.749  1.0
  F  F12  1  0.371  0.005  0.034  1.0
  F  F13  1  0.369  0.536  0.505  1.0
  F  F14  1  0.588  0.705  0.667  1.0
  F  F15  1  0.593  0.167  0.200  1.0
  F  F16  1  0.045  0.812  0.775  1.0
  F  F17  1  0.037  0.276  0.316  1.0
[/CIF]
.
The crystal structure described by NaPrF4 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a distorted octahedral geometry to one F(1), one F(10), one F(12), one F(3), one F(5), and one F(8) atom. In the second Na site, Na(2) is bonded in a distorted octahedral geometry to one F(11), one F(2), one F(4), one F(6), one F(7), and one F(9) atom. In the third Na site, Na(3) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(11), one F(12), one F(3), one F(6), one F(7), one F(8), and one F(9) atom. There are three inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(11), one F(2), one F(3), one F(4), one F(5), one F(6), and one F(7) atom. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one F(1), one F(12), one F(2), one F(3), one F(4), one F(5), one F(6), one F(8), and one F(9) atom. In the third Pr site, Pr(3) is bonded in a 9-coordinate geometry to one F(10), one F(11), one F(12), one F(2), one F(4), one F(5), one F(7), one F(8), and one F(9) atom. There are twelve inequivalent F sites. In the first F site, F(1) is bonded to one Na(1), one Na(3), one Pr(1), and one Pr(2) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(12)Na2Pr2 tetrahedra,  a cornercorner with one F(8)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(7)Na2Pr2 tetrahedra, corners with two equivalent F(9)Na2Pr2 tetrahedra, corners with two equivalent F(2)NaPr3 tetrahedra, corners with three equivalent F(6)Na2Pr2 tetrahedra, corners with four equivalent F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(4)NaPr3 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the second F site, F(2) is bonded to one Na(2), one Pr(1), one Pr(2), and one Pr(3) atom to form FNaPr3 tetrahedra that share  a cornercorner with one F(11)Na2Pr2 tetrahedra,  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(7)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra, corners with two equivalent F(1)Na2Pr2 tetrahedra, corners with two equivalent F(10)Na2Pr2 tetrahedra, corners with two equivalent F(8)Na2Pr2 tetrahedra, corners with three equivalent F(5)NaPr3 tetrahedra, corners with four equivalent F(4)NaPr3 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra, and  an edgeedge with one F(9)Na2Pr2 tetrahedra. In the third F site, F(3) is bonded to one Na(1), one Na(3), one Pr(1), and one Pr(2) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(12)Na2Pr2 tetrahedra,  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(8)Na2Pr2 tetrahedra, corners with two equivalent F(11)Na2Pr2 tetrahedra, corners with two equivalent F(9)Na2Pr2 tetrahedra, corners with two equivalent F(4)NaPr3 tetrahedra, corners with three equivalent F(5)NaPr3 tetrahedra, corners with four equivalent F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra, and  an edgeedge with one F(2)NaPr3 tetrahedra. In the fourth F site, F(4) is bonded to one Na(2), one Pr(1), one Pr(2), and one Pr(3) atom to form FNaPr3 tetrahedra that share  a cornercorner with one F(11)Na2Pr2 tetrahedra,  a cornercorner with one F(7)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(10)Na2Pr2 tetrahedra, corners with two equivalent F(12)Na2Pr2 tetrahedra, corners with two equivalent F(3)Na2Pr2 tetrahedra, corners with three equivalent F(6)Na2Pr2 tetrahedra, corners with four equivalent F(2)NaPr3 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the fifth F site, F(5) is bonded to one Na(1), one Pr(1), one Pr(2), and one Pr(3) atom to form FNaPr3 tetrahedra that share  a cornercorner with one F(1)Na2Pr2 tetrahedra,  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(12)Na2Pr2 tetrahedra,  a cornercorner with one F(8)Na2Pr2 tetrahedra,  a cornercorner with one F(4)NaPr3 tetrahedra, corners with two equivalent F(11)Na2Pr2 tetrahedra, corners with two equivalent F(6)Na2Pr2 tetrahedra, corners with two equivalent F(7)Na2Pr2 tetrahedra, corners with three equivalent F(3)Na2Pr2 tetrahedra, corners with three equivalent F(2)NaPr3 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra, and  an edgeedge with one F(4)NaPr3 tetrahedra. In the sixth F site, F(6) is bonded to one Na(2), one Na(3), one Pr(1), and one Pr(2) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(11)Na2Pr2 tetrahedra,  a cornercorner with one F(3)Na2Pr2 tetrahedra,  a cornercorner with one F(7)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra,  a cornercorner with one F(2)NaPr3 tetrahedra, corners with two equivalent F(12)Na2Pr2 tetrahedra, corners with two equivalent F(8)Na2Pr2 tetrahedra, corners with two equivalent F(5)NaPr3 tetrahedra, corners with three equivalent F(1)Na2Pr2 tetrahedra, corners with three equivalent F(4)NaPr3 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra, and  an edgeedge with one F(2)NaPr3 tetrahedra. In the seventh F site, F(7) is bonded to one Na(2), one Na(3), one Pr(1), and one Pr(3) atom to form distorted FNa2Pr2 tetrahedra that share  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(2)NaPr3 tetrahedra,  a cornercorner with one F(4)NaPr3 tetrahedra, corners with two equivalent F(1)Na2Pr2 tetrahedra, corners with two equivalent F(8)Na2Pr2 tetrahedra, corners with two equivalent F(5)NaPr3 tetrahedra, corners with three equivalent F(9)Na2Pr2 tetrahedra, corners with four equivalent F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(2)NaPr3 tetrahedra, and  an edgeedge with one F(4)NaPr3 tetrahedra. In the eighth F site, F(8) is bonded to one Na(1), one Na(3), one Pr(2), and one Pr(3) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(1)Na2Pr2 tetrahedra,  a cornercorner with one F(3)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(6)Na2Pr2 tetrahedra, corners with two equivalent F(7)Na2Pr2 tetrahedra, corners with two equivalent F(2)NaPr3 tetrahedra, corners with three equivalent F(10)Na2Pr2 tetrahedra, corners with four equivalent F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra,  an edgeedge with one F(4)NaPr3 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the ninth F site, F(9) is bonded to one Na(2), one Na(3), one Pr(2), and one Pr(3) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(11)Na2Pr2 tetrahedra,  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(8)Na2Pr2 tetrahedra,  a cornercorner with one F(2)NaPr3 tetrahedra,  a cornercorner with one F(4)NaPr3 tetrahedra, corners with two equivalent F(1)Na2Pr2 tetrahedra, corners with two equivalent F(10)Na2Pr2 tetrahedra, corners with two equivalent F(3)Na2Pr2 tetrahedra, corners with three equivalent F(12)Na2Pr2 tetrahedra, corners with three equivalent F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(11)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(2)NaPr3 tetrahedra,  an edgeedge with one F(4)NaPr3 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the tenth F site, F(10) is bonded to one Na(1), one Na(3), one Pr(1), and one Pr(3) atom to form distorted FNa2Pr2 tetrahedra that share  a cornercorner with one F(1)Na2Pr2 tetrahedra,  a cornercorner with one F(12)Na2Pr2 tetrahedra,  a cornercorner with one F(3)Na2Pr2 tetrahedra,  a cornercorner with one F(7)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(9)Na2Pr2 tetrahedra, corners with two equivalent F(2)NaPr3 tetrahedra, corners with two equivalent F(4)NaPr3 tetrahedra, corners with three equivalent F(11)Na2Pr2 tetrahedra, corners with three equivalent F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(12)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. In the eleventh F site, F(11) is bonded to one Na(2), one Na(3), one Pr(1), and one Pr(3) atom to form FNa2Pr2 tetrahedra that share  a cornercorner with one F(6)Na2Pr2 tetrahedra,  a cornercorner with one F(9)Na2Pr2 tetrahedra,  a cornercorner with one F(2)NaPr3 tetrahedra,  a cornercorner with one F(4)NaPr3 tetrahedra, corners with two equivalent F(12)Na2Pr2 tetrahedra, corners with two equivalent F(3)Na2Pr2 tetrahedra, corners with two equivalent F(5)NaPr3 tetrahedra, corners with three equivalent F(10)Na2Pr2 tetrahedra, corners with four equivalent F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(6)Na2Pr2 tetrahedra,  an edgeedge with one F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(9)Na2Pr2 tetrahedra,  an edgeedge with one F(2)NaPr3 tetrahedra, and  an edgeedge with one F(4)NaPr3 tetrahedra. In the twelfth F site, F(12) is bonded to one Na(1), one Na(3), one Pr(2), and one Pr(3) atom to form distorted FNa2Pr2 tetrahedra that share  a cornercorner with one F(1)Na2Pr2 tetrahedra,  a cornercorner with one F(10)Na2Pr2 tetrahedra,  a cornercorner with one F(3)Na2Pr2 tetrahedra,  a cornercorner with one F(5)NaPr3 tetrahedra, corners with two equivalent F(11)Na2Pr2 tetrahedra, corners with two equivalent F(6)Na2Pr2 tetrahedra, corners with two equivalent F(4)NaPr3 tetrahedra, corners with three equivalent F(9)Na2Pr2 tetrahedra, corners with four equivalent F(8)Na2Pr2 tetrahedra,  an edgeedge with one F(1)Na2Pr2 tetrahedra,  an edgeedge with one F(10)Na2Pr2 tetrahedra,  an edgeedge with one F(3)Na2Pr2 tetrahedra,  an edgeedge with one F(7)Na2Pr2 tetrahedra,  an edgeedge with one F(2)NaPr3 tetrahedra, and  an edgeedge with one F(5)NaPr3 tetrahedra. is represented by the CIF card [CIF]
data_NaPrF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.091
_cell_length_b   7.130
_cell_length_c   7.141
_cell_angle_alpha   63.298
_cell_angle_beta   64.832
_cell_angle_gamma   64.807
_symmetry_Int_Tables_number   1
_cell_volume   239.941
_cell_formula_units_Z   3
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  0.669  0.470  0.179  1.0
  Na  Na1  1  0.662  0.991  0.695  1.0
  Na  Na2  1  0.330  0.423  0.913  1.0
  Pr  Pr3  1  0.003  0.994  0.002  1.0
  Pr  Pr4  1  0.997  0.494  0.510  1.0
  Pr  Pr5  1  0.335  0.917  0.413  1.0
  F  F6  1  0.262  0.620  0.134  1.0
  F  F7  1  0.280  0.125  0.630  1.0
  F  F8  1  0.980  0.377  0.890  1.0
  F  F9  1  0.970  0.884  0.391  1.0
  F  F10  1  0.756  0.728  0.236  1.0
  F  F11  1  0.753  0.236  0.749  1.0
  F  F12  1  0.371  0.005  0.034  1.0
  F  F13  1  0.369  0.536  0.505  1.0
  F  F14  1  0.588  0.705  0.667  1.0
  F  F15  1  0.593  0.167  0.200  1.0
  F  F16  1  0.045  0.812  0.775  1.0
  F  F17  1  0.037  0.276  0.316  1.0
[/CIF]
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