LiEu4(BN2)3 crystallizes in the cubic Im-3m space group. Li(1) is bonded to six equivalent N(1) atoms to form LiN6 octahedra that share faces with eight equivalent Eu(1)N6 octahedra. Eu(1) is bonded to six equivalent N(1) atoms to form distorted EuN6 octahedra that share corners with six equivalent Eu(1)N6 octahedra, edges with six equivalent Eu(1)N6 octahedra, and faces with two equivalent Li(1)N6 octahedra. The corner-sharing octahedral tilt angles are 21°. B(1) is bonded in a linear geometry to two equivalent N(1) atoms. N(1) is bonded in a 6-coordinate geometry to one Li(1), four equivalent Eu(1), and one B(1) atom.
LiEu4(BN2)3 crystallizes in the cubic Im-3m space group. Li(1) is bonded to six equivalent N(1) atoms to form LiN6 octahedra that share faces with eight equivalent Eu(1)N6 octahedra. All Li(1)-N(1) bond lengths are 2.33 Å. Eu(1) is bonded to six equivalent N(1) atoms to form distorted EuN6 octahedra that share corners with six equivalent Eu(1)N6 octahedra, edges with six equivalent Eu(1)N6 octahedra, and faces with two equivalent Li(1)N6 octahedra. The corner-sharing octahedral tilt angles are 21°. All Eu(1)-N(1) bond lengths are 2.65 Å. B(1) is bonded in a linear geometry to two equivalent N(1) atoms. Both B(1)-N(1) bond lengths are 1.35 Å. N(1) is bonded in a 6-coordinate geometry to one Li(1), four equivalent Eu(1), and one B(1) atom.