NaNdF4 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(11), one F(4), one F(5), one F(7), and one F(9) atom. In the second Na site, Na(2) is bonded in a distorted octahedral geometry to one F(10), one F(12), one F(2), one F(3), one F(6), and one F(8) atom. In the third Na site, Na(3) 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(7), and one F(9) atom. There are three inequivalent Nd sites. In the first Nd site, Nd(1) 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(6), one F(7), one F(8), and one F(9) atom. In the second Nd site, Nd(2) 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(5), one F(7), one F(8), and one F(9) atom. In the third Nd site, Nd(3) 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(8) atom. There are twelve inequivalent F sites. In the first F site, F(1) is bonded to one Na(1), one Na(3), one Nd(2), and one Nd(3) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(7)Na2Nd2 tetrahedra,  a cornercorner with one F(9)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(12)Na2Nd2 tetrahedra, corners with two equivalent F(2)Na2Nd2 tetrahedra, corners with two equivalent F(8)NaNd3 tetrahedra, corners with three equivalent F(4)Na2Nd2 tetrahedra, corners with four equivalent F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra, and  an edgeedge with one F(11)NaNd3 tetrahedra. In the second F site, F(2) is bonded to one Na(2), one Na(3), one Nd(1), and one Nd(3) atom to form distorted FNa2Nd2 tetrahedra that share  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(10)NaNd3 tetrahedra,  a cornercorner with one F(8)NaNd3 tetrahedra, corners with two equivalent F(1)Na2Nd2 tetrahedra, corners with two equivalent F(7)Na2Nd2 tetrahedra, corners with two equivalent F(11)NaNd3 tetrahedra, corners with three equivalent F(3)Na2Nd2 tetrahedra, corners with four equivalent F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the third F site, F(3) is bonded to one Na(2), one Na(3), one Nd(2), and one Nd(3) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(1)Na2Nd2 tetrahedra,  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(6)Na2Nd2 tetrahedra,  a cornercorner with one F(10)NaNd3 tetrahedra,  a cornercorner with one F(8)NaNd3 tetrahedra, corners with two equivalent F(4)Na2Nd2 tetrahedra, corners with two equivalent F(7)Na2Nd2 tetrahedra, corners with two equivalent F(9)Na2Nd2 tetrahedra, corners with three equivalent F(2)Na2Nd2 tetrahedra, corners with three equivalent F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra,  an edgeedge with one F(11)NaNd3 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the fourth F site, F(4) is bonded to one Na(1), one Na(3), one Nd(1), and one Nd(3) atom to form distorted FNa2Nd2 tetrahedra that share  a cornercorner with one F(2)Na2Nd2 tetrahedra,  a cornercorner with one F(5)Na2Nd2 tetrahedra,  a cornercorner with one F(7)Na2Nd2 tetrahedra,  a cornercorner with one F(9)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(3)Na2Nd2 tetrahedra, corners with two equivalent F(10)NaNd3 tetrahedra, corners with two equivalent F(8)NaNd3 tetrahedra, corners with three equivalent F(1)Na2Nd2 tetrahedra, corners with three equivalent F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra, and  an edgeedge with one F(11)NaNd3 tetrahedra. In the fifth F site, F(5) is bonded to one Na(1), one Na(3), one Nd(2), and one Nd(3) atom to form distorted FNa2Nd2 tetrahedra that share  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(7)Na2Nd2 tetrahedra,  a cornercorner with one F(9)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(12)Na2Nd2 tetrahedra, corners with two equivalent F(6)Na2Nd2 tetrahedra, corners with two equivalent F(10)NaNd3 tetrahedra, corners with three equivalent F(3)Na2Nd2 tetrahedra, corners with four equivalent F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra,  an edgeedge with one F(11)NaNd3 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the sixth F site, F(6) is bonded to one Na(2), one Na(3), one Nd(1), and one Nd(3) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(10)NaNd3 tetrahedra,  a cornercorner with one F(8)NaNd3 tetrahedra, corners with two equivalent F(5)Na2Nd2 tetrahedra, corners with two equivalent F(9)Na2Nd2 tetrahedra, corners with two equivalent F(11)NaNd3 tetrahedra, corners with three equivalent F(4)Na2Nd2 tetrahedra, corners with four equivalent F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the seventh F site, F(7) is bonded to one Na(1), one Na(3), one Nd(1), and one Nd(2) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(1)Na2Nd2 tetrahedra,  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(5)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(2)Na2Nd2 tetrahedra, corners with two equivalent F(3)Na2Nd2 tetrahedra, corners with two equivalent F(8)NaNd3 tetrahedra, corners with three equivalent F(12)Na2Nd2 tetrahedra, corners with four equivalent F(9)Na2Nd2 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra, and  an edgeedge with one F(11)NaNd3 tetrahedra. In the eighth F site, F(8) is bonded to one Na(2), one Nd(1), one Nd(2), and one Nd(3) atom to form FNaNd3 tetrahedra that share  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(2)Na2Nd2 tetrahedra,  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(6)Na2Nd2 tetrahedra, corners with two equivalent F(1)Na2Nd2 tetrahedra, corners with two equivalent F(4)Na2Nd2 tetrahedra, corners with two equivalent F(7)Na2Nd2 tetrahedra, corners with three equivalent F(11)NaNd3 tetrahedra, corners with four equivalent F(10)NaNd3 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra, and  an edgeedge with one F(9)Na2Nd2 tetrahedra. In the ninth F site, F(9) is bonded to one Na(1), one Na(3), one Nd(1), and one Nd(2) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(1)Na2Nd2 tetrahedra,  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(5)Na2Nd2 tetrahedra, corners with two equivalent F(3)Na2Nd2 tetrahedra, corners with two equivalent F(6)Na2Nd2 tetrahedra, corners with two equivalent F(10)NaNd3 tetrahedra, corners with three equivalent F(11)NaNd3 tetrahedra, corners with four equivalent F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the tenth F site, F(10) is bonded to one Na(2), one Nd(1), one Nd(2), and one Nd(3) atom to form FNaNd3 tetrahedra that share  a cornercorner with one F(2)Na2Nd2 tetrahedra,  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(6)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(4)Na2Nd2 tetrahedra, corners with two equivalent F(5)Na2Nd2 tetrahedra, corners with two equivalent F(9)Na2Nd2 tetrahedra, corners with three equivalent F(12)Na2Nd2 tetrahedra, corners with four equivalent F(8)NaNd3 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra, and  an edgeedge with one F(11)NaNd3 tetrahedra. In the eleventh F site, F(11) is bonded to one Na(1), one Nd(1), one Nd(2), and one Nd(3) atom to form FNaNd3 tetrahedra that share  a cornercorner with one F(1)Na2Nd2 tetrahedra,  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(5)Na2Nd2 tetrahedra,  a cornercorner with one F(7)Na2Nd2 tetrahedra,  a cornercorner with one F(10)NaNd3 tetrahedra, corners with two equivalent F(12)Na2Nd2 tetrahedra, corners with two equivalent F(2)Na2Nd2 tetrahedra, corners with two equivalent F(6)Na2Nd2 tetrahedra, corners with three equivalent F(9)Na2Nd2 tetrahedra, corners with three equivalent F(8)NaNd3 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra, and  an edgeedge with one F(10)NaNd3 tetrahedra. In the twelfth F site, F(12) is bonded to one Na(2), one Na(3), one Nd(1), and one Nd(2) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(2)Na2Nd2 tetrahedra,  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(6)Na2Nd2 tetrahedra,  a cornercorner with one F(9)Na2Nd2 tetrahedra,  a cornercorner with one F(8)NaNd3 tetrahedra, corners with two equivalent F(1)Na2Nd2 tetrahedra, corners with two equivalent F(5)Na2Nd2 tetrahedra, corners with two equivalent F(11)NaNd3 tetrahedra, corners with three equivalent F(7)Na2Nd2 tetrahedra, corners with three equivalent F(10)NaNd3 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra.
NaNdF4 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(11), one F(4), one F(5), one F(7), and one F(9) atom. The Na(1)-F(1) bond length is 2.37 Å. The Na(1)-F(11) bond length is 2.33 Å. The Na(1)-F(4) bond length is 2.34 Å. The Na(1)-F(5) bond length is 2.47 Å. The Na(1)-F(7) bond length is 2.32 Å. The Na(1)-F(9) bond length is 2.25 Å. In the second Na site, Na(2) is bonded in a distorted octahedral geometry to one F(10), one F(12), one F(2), one F(3), one F(6), and one F(8) atom. The Na(2)-F(10) bond length is 2.35 Å. The Na(2)-F(12) bond length is 2.25 Å. The Na(2)-F(2) bond length is 2.34 Å. The Na(2)-F(3) bond length is 2.38 Å. The Na(2)-F(6) bond length is 2.32 Å. The Na(2)-F(8) bond length is 2.26 Å. In the third Na site, Na(3) 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(7), and one F(9) atom. The Na(3)-F(1) bond length is 2.56 Å. The Na(3)-F(12) bond length is 2.36 Å. The Na(3)-F(2) bond length is 2.62 Å. The Na(3)-F(3) bond length is 2.59 Å. The Na(3)-F(4) bond length is 2.64 Å. The Na(3)-F(5) bond length is 2.64 Å. The Na(3)-F(6) bond length is 2.56 Å. The Na(3)-F(7) bond length is 2.34 Å. The Na(3)-F(9) bond length is 2.35 Å. There are three inequivalent Nd sites. In the first Nd site, Nd(1) 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(6), one F(7), one F(8), and one F(9) atom. The Nd(1)-F(10) bond length is 2.43 Å. The Nd(1)-F(11) bond length is 2.45 Å. The Nd(1)-F(12) bond length is 2.40 Å. The Nd(1)-F(2) bond length is 2.37 Å. The Nd(1)-F(4) bond length is 2.37 Å. The Nd(1)-F(6) bond length is 2.36 Å. The Nd(1)-F(7) bond length is 2.41 Å. The Nd(1)-F(8) bond length is 2.44 Å. The Nd(1)-F(9) bond length is 2.41 Å. In the second Nd site, Nd(2) 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(5), one F(7), one F(8), and one F(9) atom. The Nd(2)-F(1) bond length is 2.38 Å. The Nd(2)-F(10) bond length is 2.44 Å. The Nd(2)-F(11) bond length is 2.46 Å. The Nd(2)-F(12) bond length is 2.39 Å. The Nd(2)-F(3) bond length is 2.37 Å. The Nd(2)-F(5) bond length is 2.37 Å. The Nd(2)-F(7) bond length is 2.42 Å. The Nd(2)-F(8) bond length is 2.42 Å. The Nd(2)-F(9) bond length is 2.40 Å. In the third Nd site, Nd(3) 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(8) atom. The Nd(3)-F(1) bond length is 2.41 Å. The Nd(3)-F(10) bond length is 2.39 Å. The Nd(3)-F(11) bond length is 2.39 Å. The Nd(3)-F(2) bond length is 2.40 Å. The Nd(3)-F(3) bond length is 2.41 Å. The Nd(3)-F(4) bond length is 2.39 Å. The Nd(3)-F(5) bond length is 2.40 Å. The Nd(3)-F(6) bond length is 2.40 Å. The Nd(3)-F(8) bond length is 2.41 Å. There are twelve inequivalent F sites. In the first F site, F(1) is bonded to one Na(1), one Na(3), one Nd(2), and one Nd(3) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(7)Na2Nd2 tetrahedra,  a cornercorner with one F(9)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(12)Na2Nd2 tetrahedra, corners with two equivalent F(2)Na2Nd2 tetrahedra, corners with two equivalent F(8)NaNd3 tetrahedra, corners with three equivalent F(4)Na2Nd2 tetrahedra, corners with four equivalent F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra, and  an edgeedge with one F(11)NaNd3 tetrahedra. In the second F site, F(2) is bonded to one Na(2), one Na(3), one Nd(1), and one Nd(3) atom to form distorted FNa2Nd2 tetrahedra that share  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(10)NaNd3 tetrahedra,  a cornercorner with one F(8)NaNd3 tetrahedra, corners with two equivalent F(1)Na2Nd2 tetrahedra, corners with two equivalent F(7)Na2Nd2 tetrahedra, corners with two equivalent F(11)NaNd3 tetrahedra, corners with three equivalent F(3)Na2Nd2 tetrahedra, corners with four equivalent F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the third F site, F(3) is bonded to one Na(2), one Na(3), one Nd(2), and one Nd(3) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(1)Na2Nd2 tetrahedra,  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(6)Na2Nd2 tetrahedra,  a cornercorner with one F(10)NaNd3 tetrahedra,  a cornercorner with one F(8)NaNd3 tetrahedra, corners with two equivalent F(4)Na2Nd2 tetrahedra, corners with two equivalent F(7)Na2Nd2 tetrahedra, corners with two equivalent F(9)Na2Nd2 tetrahedra, corners with three equivalent F(2)Na2Nd2 tetrahedra, corners with three equivalent F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra,  an edgeedge with one F(11)NaNd3 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the fourth F site, F(4) is bonded to one Na(1), one Na(3), one Nd(1), and one Nd(3) atom to form distorted FNa2Nd2 tetrahedra that share  a cornercorner with one F(2)Na2Nd2 tetrahedra,  a cornercorner with one F(5)Na2Nd2 tetrahedra,  a cornercorner with one F(7)Na2Nd2 tetrahedra,  a cornercorner with one F(9)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(3)Na2Nd2 tetrahedra, corners with two equivalent F(10)NaNd3 tetrahedra, corners with two equivalent F(8)NaNd3 tetrahedra, corners with three equivalent F(1)Na2Nd2 tetrahedra, corners with three equivalent F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra, and  an edgeedge with one F(11)NaNd3 tetrahedra. In the fifth F site, F(5) is bonded to one Na(1), one Na(3), one Nd(2), and one Nd(3) atom to form distorted FNa2Nd2 tetrahedra that share  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(7)Na2Nd2 tetrahedra,  a cornercorner with one F(9)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(12)Na2Nd2 tetrahedra, corners with two equivalent F(6)Na2Nd2 tetrahedra, corners with two equivalent F(10)NaNd3 tetrahedra, corners with three equivalent F(3)Na2Nd2 tetrahedra, corners with four equivalent F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra,  an edgeedge with one F(11)NaNd3 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the sixth F site, F(6) is bonded to one Na(2), one Na(3), one Nd(1), and one Nd(3) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(10)NaNd3 tetrahedra,  a cornercorner with one F(8)NaNd3 tetrahedra, corners with two equivalent F(5)Na2Nd2 tetrahedra, corners with two equivalent F(9)Na2Nd2 tetrahedra, corners with two equivalent F(11)NaNd3 tetrahedra, corners with three equivalent F(4)Na2Nd2 tetrahedra, corners with four equivalent F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the seventh F site, F(7) is bonded to one Na(1), one Na(3), one Nd(1), and one Nd(2) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(1)Na2Nd2 tetrahedra,  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(5)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(2)Na2Nd2 tetrahedra, corners with two equivalent F(3)Na2Nd2 tetrahedra, corners with two equivalent F(8)NaNd3 tetrahedra, corners with three equivalent F(12)Na2Nd2 tetrahedra, corners with four equivalent F(9)Na2Nd2 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(10)NaNd3 tetrahedra, and  an edgeedge with one F(11)NaNd3 tetrahedra. In the eighth F site, F(8) is bonded to one Na(2), one Nd(1), one Nd(2), and one Nd(3) atom to form FNaNd3 tetrahedra that share  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(2)Na2Nd2 tetrahedra,  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(6)Na2Nd2 tetrahedra, corners with two equivalent F(1)Na2Nd2 tetrahedra, corners with two equivalent F(4)Na2Nd2 tetrahedra, corners with two equivalent F(7)Na2Nd2 tetrahedra, corners with three equivalent F(11)NaNd3 tetrahedra, corners with four equivalent F(10)NaNd3 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra, and  an edgeedge with one F(9)Na2Nd2 tetrahedra. In the ninth F site, F(9) is bonded to one Na(1), one Na(3), one Nd(1), and one Nd(2) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(1)Na2Nd2 tetrahedra,  a cornercorner with one F(12)Na2Nd2 tetrahedra,  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(5)Na2Nd2 tetrahedra, corners with two equivalent F(3)Na2Nd2 tetrahedra, corners with two equivalent F(6)Na2Nd2 tetrahedra, corners with two equivalent F(10)NaNd3 tetrahedra, corners with three equivalent F(11)NaNd3 tetrahedra, corners with four equivalent F(7)Na2Nd2 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(12)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra. In the tenth F site, F(10) is bonded to one Na(2), one Nd(1), one Nd(2), and one Nd(3) atom to form FNaNd3 tetrahedra that share  a cornercorner with one F(2)Na2Nd2 tetrahedra,  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(6)Na2Nd2 tetrahedra,  a cornercorner with one F(11)NaNd3 tetrahedra, corners with two equivalent F(4)Na2Nd2 tetrahedra, corners with two equivalent F(5)Na2Nd2 tetrahedra, corners with two equivalent F(9)Na2Nd2 tetrahedra, corners with three equivalent F(12)Na2Nd2 tetrahedra, corners with four equivalent F(8)NaNd3 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra, and  an edgeedge with one F(11)NaNd3 tetrahedra. In the eleventh F site, F(11) is bonded to one Na(1), one Nd(1), one Nd(2), and one Nd(3) atom to form FNaNd3 tetrahedra that share  a cornercorner with one F(1)Na2Nd2 tetrahedra,  a cornercorner with one F(4)Na2Nd2 tetrahedra,  a cornercorner with one F(5)Na2Nd2 tetrahedra,  a cornercorner with one F(7)Na2Nd2 tetrahedra,  a cornercorner with one F(10)NaNd3 tetrahedra, corners with two equivalent F(12)Na2Nd2 tetrahedra, corners with two equivalent F(2)Na2Nd2 tetrahedra, corners with two equivalent F(6)Na2Nd2 tetrahedra, corners with three equivalent F(9)Na2Nd2 tetrahedra, corners with three equivalent F(8)NaNd3 tetrahedra,  an edgeedge with one F(1)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(5)Na2Nd2 tetrahedra,  an edgeedge with one F(7)Na2Nd2 tetrahedra, and  an edgeedge with one F(10)NaNd3 tetrahedra. In the twelfth F site, F(12) is bonded to one Na(2), one Na(3), one Nd(1), and one Nd(2) atom to form FNa2Nd2 tetrahedra that share  a cornercorner with one F(2)Na2Nd2 tetrahedra,  a cornercorner with one F(3)Na2Nd2 tetrahedra,  a cornercorner with one F(6)Na2Nd2 tetrahedra,  a cornercorner with one F(9)Na2Nd2 tetrahedra,  a cornercorner with one F(8)NaNd3 tetrahedra, corners with two equivalent F(1)Na2Nd2 tetrahedra, corners with two equivalent F(5)Na2Nd2 tetrahedra, corners with two equivalent F(11)NaNd3 tetrahedra, corners with three equivalent F(7)Na2Nd2 tetrahedra, corners with three equivalent F(10)NaNd3 tetrahedra,  an edgeedge with one F(2)Na2Nd2 tetrahedra,  an edgeedge with one F(3)Na2Nd2 tetrahedra,  an edgeedge with one F(4)Na2Nd2 tetrahedra,  an edgeedge with one F(6)Na2Nd2 tetrahedra,  an edgeedge with one F(9)Na2Nd2 tetrahedra, and  an edgeedge with one F(8)NaNd3 tetrahedra.