NaEuF4 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 9-coordinate geometry to one F(10), one F(11), one F(12), one F(2), one F(3), one F(6), one F(7), one F(8), and one F(9) atom. In the second Na site, Na(2) is bonded in a distorted hexagonal planar geometry to one F(1), one F(11), one F(3), one F(5), one F(7), and one F(9) atom. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to one F(10), one F(12), one F(2), one F(4), one F(6), and one F(8) atom. There are three inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 9-coordinate geometry to one F(1), one F(11), 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 second Eu site, Eu(2) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(12), one F(2), one F(3), one F(4), one F(5), one F(6), and one F(7) atom. In the third Eu site, Eu(3) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(11), one F(12), 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(2), one Eu(1), one Eu(2), and one Eu(3) atom to form FNaEu3 tetrahedra that share  a cornercorner with one F(11)Na2Eu2 tetrahedra,  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(9)Na2Eu2 tetrahedra, corners with two equivalent F(10)Na2Eu2 tetrahedra, corners with two equivalent F(2)Na2Eu2 tetrahedra, corners with two equivalent F(8)Na2Eu2 tetrahedra, corners with three equivalent F(4)NaEu3 tetrahedra, corners with four equivalent F(5)NaEu3 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra, and  an edgeedge with one F(9)Na2Eu2 tetrahedra. In the second F site, F(2) is bonded to one Na(1), one Na(3), one Eu(1), and one Eu(2) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(10)Na2Eu2 tetrahedra,  a cornercorner with one F(12)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(7)Na2Eu2 tetrahedra, corners with two equivalent F(9)Na2Eu2 tetrahedra, corners with two equivalent F(1)NaEu3 tetrahedra, corners with three equivalent F(3)Na2Eu2 tetrahedra, corners with four equivalent F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(4)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the third F site, F(3) is bonded to one Na(1), one Na(2), one Eu(1), and one Eu(2) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(11)Na2Eu2 tetrahedra,  a cornercorner with one F(6)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(9)Na2Eu2 tetrahedra,  a cornercorner with one F(1)NaEu3 tetrahedra, corners with two equivalent F(10)Na2Eu2 tetrahedra, corners with two equivalent F(12)Na2Eu2 tetrahedra, corners with two equivalent F(4)NaEu3 tetrahedra, corners with three equivalent F(2)Na2Eu2 tetrahedra, corners with three equivalent F(5)NaEu3 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra, and  an edgeedge with one F(1)NaEu3 tetrahedra. In the fourth F site, F(4) is bonded to one Na(3), one Eu(1), one Eu(2), and one Eu(3) atom to form FNaEu3 tetrahedra that share  a cornercorner with one F(10)Na2Eu2 tetrahedra,  a cornercorner with one F(12)Na2Eu2 tetrahedra,  a cornercorner with one F(2)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra,  a cornercorner with one F(5)NaEu3 tetrahedra, corners with two equivalent F(11)Na2Eu2 tetrahedra, corners with two equivalent F(3)Na2Eu2 tetrahedra, corners with two equivalent F(9)Na2Eu2 tetrahedra, corners with three equivalent F(6)Na2Eu2 tetrahedra, corners with three equivalent F(1)NaEu3 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the fifth F site, F(5) is bonded to one Na(2), one Eu(1), one Eu(2), and one Eu(3) atom to form FNaEu3 tetrahedra that share  a cornercorner with one F(11)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(9)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(12)Na2Eu2 tetrahedra, corners with two equivalent F(6)Na2Eu2 tetrahedra, corners with two equivalent F(8)Na2Eu2 tetrahedra, corners with three equivalent F(3)Na2Eu2 tetrahedra, corners with four equivalent F(1)NaEu3 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra, and  an edgeedge with one F(4)NaEu3 tetrahedra. In the sixth F site, F(6) is bonded to one Na(1), one Na(3), one Eu(1), and one Eu(2) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(10)Na2Eu2 tetrahedra,  a cornercorner with one F(12)Na2Eu2 tetrahedra,  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra, corners with two equivalent F(11)Na2Eu2 tetrahedra, corners with two equivalent F(7)Na2Eu2 tetrahedra, corners with two equivalent F(5)NaEu3 tetrahedra, corners with three equivalent F(4)NaEu3 tetrahedra, corners with four equivalent F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra, and  an edgeedge with one F(1)NaEu3 tetrahedra. In the seventh F site, F(7) is bonded to one Na(1), one Na(2), one Eu(2), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(10)Na2Eu2 tetrahedra,  a cornercorner with one F(11)Na2Eu2 tetrahedra,  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(1)NaEu3 tetrahedra,  a cornercorner with one F(5)NaEu3 tetrahedra, corners with two equivalent F(2)Na2Eu2 tetrahedra, corners with two equivalent F(6)Na2Eu2 tetrahedra, corners with two equivalent F(8)Na2Eu2 tetrahedra, corners with three equivalent F(12)Na2Eu2 tetrahedra, corners with three equivalent F(9)Na2Eu2 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(1)NaEu3 tetrahedra,  an edgeedge with one F(4)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the eighth F site, F(8) is bonded to one Na(1), one Na(3), one Eu(1), and one Eu(3) atom to form distorted FNa2Eu2 tetrahedra that share  a cornercorner with one F(12)Na2Eu2 tetrahedra,  a cornercorner with one F(2)Na2Eu2 tetrahedra,  a cornercorner with one F(6)Na2Eu2 tetrahedra,  a cornercorner with one F(9)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(7)Na2Eu2 tetrahedra, corners with two equivalent F(1)NaEu3 tetrahedra, corners with two equivalent F(5)NaEu3 tetrahedra, corners with three equivalent F(10)Na2Eu2 tetrahedra, corners with three equivalent F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra, and  an edgeedge with one F(4)NaEu3 tetrahedra. In the ninth F site, F(9) is bonded to one Na(1), one Na(2), one Eu(1), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra,  a cornercorner with one F(1)NaEu3 tetrahedra,  a cornercorner with one F(5)NaEu3 tetrahedra, corners with two equivalent F(10)Na2Eu2 tetrahedra, corners with two equivalent F(2)Na2Eu2 tetrahedra, corners with two equivalent F(4)NaEu3 tetrahedra, corners with three equivalent F(7)Na2Eu2 tetrahedra, corners with four equivalent F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(1)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the tenth F site, F(10) is bonded to one Na(1), one Na(3), one Eu(2), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(2)Na2Eu2 tetrahedra,  a cornercorner with one F(6)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(3)Na2Eu2 tetrahedra, corners with two equivalent F(9)Na2Eu2 tetrahedra, corners with two equivalent F(1)NaEu3 tetrahedra, corners with three equivalent F(8)Na2Eu2 tetrahedra, corners with four equivalent F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(4)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the eleventh F site, F(11) is bonded to one Na(1), one Na(2), one Eu(1), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(1)NaEu3 tetrahedra,  a cornercorner with one F(5)NaEu3 tetrahedra, corners with two equivalent F(12)Na2Eu2 tetrahedra, corners with two equivalent F(6)Na2Eu2 tetrahedra, corners with two equivalent F(4)NaEu3 tetrahedra, corners with three equivalent F(8)Na2Eu2 tetrahedra, corners with four equivalent F(9)Na2Eu2 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(1)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the twelfth F site, F(12) is bonded to one Na(1), one Na(3), one Eu(2), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(2)Na2Eu2 tetrahedra,  a cornercorner with one F(6)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(11)Na2Eu2 tetrahedra, corners with two equivalent F(3)Na2Eu2 tetrahedra, corners with two equivalent F(5)NaEu3 tetrahedra, corners with three equivalent F(7)Na2Eu2 tetrahedra, corners with four equivalent F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra,  an edgeedge with one F(1)NaEu3 tetrahedra, and  an edgeedge with one F(4)NaEu3 tetrahedra.
NaEuF4 crystallizes in the triclinic P1 space group. There are three inequivalent Na sites. In the first Na site, Na(1) is bonded in a 9-coordinate geometry to one F(10), one F(11), one F(12), one F(2), one F(3), one F(6), one F(7), one F(8), and one F(9) atom. The Na(1)-F(10) bond length is 2.62 Å. The Na(1)-F(11) bond length is 2.63 Å. The Na(1)-F(12) bond length is 2.61 Å. The Na(1)-F(2) bond length is 2.45 Å. The Na(1)-F(3) bond length is 2.46 Å. The Na(1)-F(6) bond length is 2.51 Å. The Na(1)-F(7) bond length is 2.64 Å. The Na(1)-F(8) bond length is 2.65 Å. The Na(1)-F(9) bond length is 2.65 Å. In the second Na site, Na(2) is bonded in a distorted hexagonal planar geometry to one F(1), one F(11), one F(3), one F(5), one F(7), and one F(9) atom. The Na(2)-F(1) bond length is 2.32 Å. The Na(2)-F(11) bond length is 2.44 Å. The Na(2)-F(3) bond length is 2.33 Å. The Na(2)-F(5) bond length is 2.37 Å. The Na(2)-F(7) bond length is 2.49 Å. The Na(2)-F(9) bond length is 2.48 Å. In the third Na site, Na(3) is bonded in a 6-coordinate geometry to one F(10), one F(12), one F(2), one F(4), one F(6), and one F(8) atom. The Na(3)-F(10) bond length is 2.46 Å. The Na(3)-F(12) bond length is 2.61 Å. The Na(3)-F(2) bond length is 2.43 Å. The Na(3)-F(4) bond length is 2.39 Å. The Na(3)-F(6) bond length is 2.32 Å. The Na(3)-F(8) bond length is 2.53 Å. There are three inequivalent Eu sites. In the first Eu site, Eu(1) is bonded in a 9-coordinate geometry to one F(1), one F(11), one F(2), one F(3), one F(4), one F(5), one F(6), one F(8), and one F(9) atom. The Eu(1)-F(1) bond length is 2.47 Å. The Eu(1)-F(11) bond length is 2.37 Å. The Eu(1)-F(2) bond length is 2.41 Å. The Eu(1)-F(3) bond length is 2.43 Å. The Eu(1)-F(4) bond length is 2.46 Å. The Eu(1)-F(5) bond length is 2.48 Å. The Eu(1)-F(6) bond length is 2.41 Å. The Eu(1)-F(8) bond length is 2.37 Å. The Eu(1)-F(9) bond length is 2.38 Å. In the second Eu site, Eu(2) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(12), one F(2), one F(3), one F(4), one F(5), one F(6), and one F(7) atom. The Eu(2)-F(1) bond length is 2.48 Å. The Eu(2)-F(10) bond length is 2.39 Å. The Eu(2)-F(12) bond length is 2.37 Å. The Eu(2)-F(2) bond length is 2.40 Å. The Eu(2)-F(3) bond length is 2.39 Å. The Eu(2)-F(4) bond length is 2.50 Å. The Eu(2)-F(5) bond length is 2.51 Å. The Eu(2)-F(6) bond length is 2.40 Å. The Eu(2)-F(7) bond length is 2.38 Å. In the third Eu site, Eu(3) is bonded in a 9-coordinate geometry to one F(1), one F(10), one F(11), one F(12), one F(4), one F(5), one F(7), one F(8), and one F(9) atom. The Eu(3)-F(1) bond length is 2.45 Å. The Eu(3)-F(10) bond length is 2.42 Å. The Eu(3)-F(11) bond length is 2.40 Å. The Eu(3)-F(12) bond length is 2.42 Å. The Eu(3)-F(4) bond length is 2.45 Å. The Eu(3)-F(5) bond length is 2.42 Å. The Eu(3)-F(7) bond length is 2.43 Å. The Eu(3)-F(8) bond length is 2.40 Å. The Eu(3)-F(9) bond length is 2.42 Å. There are twelve inequivalent F sites. In the first F site, F(1) is bonded to one Na(2), one Eu(1), one Eu(2), and one Eu(3) atom to form FNaEu3 tetrahedra that share  a cornercorner with one F(11)Na2Eu2 tetrahedra,  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(9)Na2Eu2 tetrahedra, corners with two equivalent F(10)Na2Eu2 tetrahedra, corners with two equivalent F(2)Na2Eu2 tetrahedra, corners with two equivalent F(8)Na2Eu2 tetrahedra, corners with three equivalent F(4)NaEu3 tetrahedra, corners with four equivalent F(5)NaEu3 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra, and  an edgeedge with one F(9)Na2Eu2 tetrahedra. In the second F site, F(2) is bonded to one Na(1), one Na(3), one Eu(1), and one Eu(2) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(10)Na2Eu2 tetrahedra,  a cornercorner with one F(12)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(7)Na2Eu2 tetrahedra, corners with two equivalent F(9)Na2Eu2 tetrahedra, corners with two equivalent F(1)NaEu3 tetrahedra, corners with three equivalent F(3)Na2Eu2 tetrahedra, corners with four equivalent F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(4)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the third F site, F(3) is bonded to one Na(1), one Na(2), one Eu(1), and one Eu(2) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(11)Na2Eu2 tetrahedra,  a cornercorner with one F(6)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(9)Na2Eu2 tetrahedra,  a cornercorner with one F(1)NaEu3 tetrahedra, corners with two equivalent F(10)Na2Eu2 tetrahedra, corners with two equivalent F(12)Na2Eu2 tetrahedra, corners with two equivalent F(4)NaEu3 tetrahedra, corners with three equivalent F(2)Na2Eu2 tetrahedra, corners with three equivalent F(5)NaEu3 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra, and  an edgeedge with one F(1)NaEu3 tetrahedra. In the fourth F site, F(4) is bonded to one Na(3), one Eu(1), one Eu(2), and one Eu(3) atom to form FNaEu3 tetrahedra that share  a cornercorner with one F(10)Na2Eu2 tetrahedra,  a cornercorner with one F(12)Na2Eu2 tetrahedra,  a cornercorner with one F(2)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra,  a cornercorner with one F(5)NaEu3 tetrahedra, corners with two equivalent F(11)Na2Eu2 tetrahedra, corners with two equivalent F(3)Na2Eu2 tetrahedra, corners with two equivalent F(9)Na2Eu2 tetrahedra, corners with three equivalent F(6)Na2Eu2 tetrahedra, corners with three equivalent F(1)NaEu3 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the fifth F site, F(5) is bonded to one Na(2), one Eu(1), one Eu(2), and one Eu(3) atom to form FNaEu3 tetrahedra that share  a cornercorner with one F(11)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(9)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(12)Na2Eu2 tetrahedra, corners with two equivalent F(6)Na2Eu2 tetrahedra, corners with two equivalent F(8)Na2Eu2 tetrahedra, corners with three equivalent F(3)Na2Eu2 tetrahedra, corners with four equivalent F(1)NaEu3 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra, and  an edgeedge with one F(4)NaEu3 tetrahedra. In the sixth F site, F(6) is bonded to one Na(1), one Na(3), one Eu(1), and one Eu(2) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(10)Na2Eu2 tetrahedra,  a cornercorner with one F(12)Na2Eu2 tetrahedra,  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra, corners with two equivalent F(11)Na2Eu2 tetrahedra, corners with two equivalent F(7)Na2Eu2 tetrahedra, corners with two equivalent F(5)NaEu3 tetrahedra, corners with three equivalent F(4)NaEu3 tetrahedra, corners with four equivalent F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra, and  an edgeedge with one F(1)NaEu3 tetrahedra. In the seventh F site, F(7) is bonded to one Na(1), one Na(2), one Eu(2), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(10)Na2Eu2 tetrahedra,  a cornercorner with one F(11)Na2Eu2 tetrahedra,  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(1)NaEu3 tetrahedra,  a cornercorner with one F(5)NaEu3 tetrahedra, corners with two equivalent F(2)Na2Eu2 tetrahedra, corners with two equivalent F(6)Na2Eu2 tetrahedra, corners with two equivalent F(8)Na2Eu2 tetrahedra, corners with three equivalent F(12)Na2Eu2 tetrahedra, corners with three equivalent F(9)Na2Eu2 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(1)NaEu3 tetrahedra,  an edgeedge with one F(4)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the eighth F site, F(8) is bonded to one Na(1), one Na(3), one Eu(1), and one Eu(3) atom to form distorted FNa2Eu2 tetrahedra that share  a cornercorner with one F(12)Na2Eu2 tetrahedra,  a cornercorner with one F(2)Na2Eu2 tetrahedra,  a cornercorner with one F(6)Na2Eu2 tetrahedra,  a cornercorner with one F(9)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(7)Na2Eu2 tetrahedra, corners with two equivalent F(1)NaEu3 tetrahedra, corners with two equivalent F(5)NaEu3 tetrahedra, corners with three equivalent F(10)Na2Eu2 tetrahedra, corners with three equivalent F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra, and  an edgeedge with one F(4)NaEu3 tetrahedra. In the ninth F site, F(9) is bonded to one Na(1), one Na(2), one Eu(1), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra,  a cornercorner with one F(1)NaEu3 tetrahedra,  a cornercorner with one F(5)NaEu3 tetrahedra, corners with two equivalent F(10)Na2Eu2 tetrahedra, corners with two equivalent F(2)Na2Eu2 tetrahedra, corners with two equivalent F(4)NaEu3 tetrahedra, corners with three equivalent F(7)Na2Eu2 tetrahedra, corners with four equivalent F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(1)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the tenth F site, F(10) is bonded to one Na(1), one Na(3), one Eu(2), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(2)Na2Eu2 tetrahedra,  a cornercorner with one F(6)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(3)Na2Eu2 tetrahedra, corners with two equivalent F(9)Na2Eu2 tetrahedra, corners with two equivalent F(1)NaEu3 tetrahedra, corners with three equivalent F(8)Na2Eu2 tetrahedra, corners with four equivalent F(12)Na2Eu2 tetrahedra,  an edgeedge with one F(11)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(4)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the eleventh F site, F(11) is bonded to one Na(1), one Na(2), one Eu(1), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(3)Na2Eu2 tetrahedra,  a cornercorner with one F(7)Na2Eu2 tetrahedra,  a cornercorner with one F(1)NaEu3 tetrahedra,  a cornercorner with one F(5)NaEu3 tetrahedra, corners with two equivalent F(12)Na2Eu2 tetrahedra, corners with two equivalent F(6)Na2Eu2 tetrahedra, corners with two equivalent F(4)NaEu3 tetrahedra, corners with three equivalent F(8)Na2Eu2 tetrahedra, corners with four equivalent F(9)Na2Eu2 tetrahedra,  an edgeedge with one F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(3)Na2Eu2 tetrahedra,  an edgeedge with one F(7)Na2Eu2 tetrahedra,  an edgeedge with one F(1)NaEu3 tetrahedra, and  an edgeedge with one F(5)NaEu3 tetrahedra. In the twelfth F site, F(12) is bonded to one Na(1), one Na(3), one Eu(2), and one Eu(3) atom to form FNa2Eu2 tetrahedra that share  a cornercorner with one F(2)Na2Eu2 tetrahedra,  a cornercorner with one F(6)Na2Eu2 tetrahedra,  a cornercorner with one F(8)Na2Eu2 tetrahedra,  a cornercorner with one F(4)NaEu3 tetrahedra, corners with two equivalent F(11)Na2Eu2 tetrahedra, corners with two equivalent F(3)Na2Eu2 tetrahedra, corners with two equivalent F(5)NaEu3 tetrahedra, corners with three equivalent F(7)Na2Eu2 tetrahedra, corners with four equivalent F(10)Na2Eu2 tetrahedra,  an edgeedge with one F(2)Na2Eu2 tetrahedra,  an edgeedge with one F(6)Na2Eu2 tetrahedra,  an edgeedge with one F(8)Na2Eu2 tetrahedra,  an edgeedge with one F(9)Na2Eu2 tetrahedra,  an edgeedge with one F(1)NaEu3 tetrahedra, and  an edgeedge with one F(4)NaEu3 tetrahedra.