Li2UN2 crystallizes in the trigonal P-3m1 space group. Li(1) is bonded to four equivalent N(1) atoms to form LiN4 tetrahedra that share corners with six equivalent U(1)N6 octahedra, corners with six equivalent Li(1)N4 tetrahedra, edges with three equivalent U(1)N6 octahedra, and edges with three equivalent Li(1)N4 tetrahedra. The corner-sharing octahedral tilt angles range from 7-58°. U(1) is bonded to six equivalent N(1) atoms to form UN6 octahedra that share corners with twelve equivalent Li(1)N4 tetrahedra, edges with six equivalent U(1)N6 octahedra, and edges with six equivalent Li(1)N4 tetrahedra. N(1) is bonded to four equivalent Li(1) and three equivalent U(1) atoms to form a mixture of distorted edge and corner-sharing NLi4U3 pentagonal bipyramids.
Li2UN2 crystallizes in the trigonal P-3m1 space group. Li(1) is bonded to four equivalent N(1) atoms to form LiN4 tetrahedra that share corners with six equivalent U(1)N6 octahedra, corners with six equivalent Li(1)N4 tetrahedra, edges with three equivalent U(1)N6 octahedra, and edges with three equivalent Li(1)N4 tetrahedra. The corner-sharing octahedral tilt angles range from 7-58°. There is one shorter (2.11 Å) and three longer (2.22 Å) Li(1)-N(1) bond lengths. U(1) is bonded to six equivalent N(1) atoms to form UN6 octahedra that share corners with twelve equivalent Li(1)N4 tetrahedra, edges with six equivalent U(1)N6 octahedra, and edges with six equivalent Li(1)N4 tetrahedra. All U(1)-N(1) bond lengths are 2.37 Å. N(1) is bonded to four equivalent Li(1) and three equivalent U(1) atoms to form a mixture of distorted edge and corner-sharing NLi4U3 pentagonal bipyramids.