Li2CeAs2 crystallizes in the trigonal P-3m1 space group. Li(1) is bonded to four equivalent As(1) atoms to form LiAs4 tetrahedra that share corners with six equivalent Ce(1)As6 octahedra, corners with six equivalent Li(1)As4 tetrahedra, edges with three equivalent Ce(1)As6 octahedra, and edges with three equivalent Li(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-57°. Ce(1) is bonded to six equivalent As(1) atoms to form CeAs6 octahedra that share corners with twelve equivalent Li(1)As4 tetrahedra, edges with six equivalent Ce(1)As6 octahedra, and edges with six equivalent Li(1)As4 tetrahedra. As(1) is bonded to four equivalent Li(1) and three equivalent Ce(1) atoms to form a mixture of distorted edge and corner-sharing AsLi4Ce3 pentagonal bipyramids.
Li2CeAs2 crystallizes in the trigonal P-3m1 space group. Li(1) is bonded to four equivalent As(1) atoms to form LiAs4 tetrahedra that share corners with six equivalent Ce(1)As6 octahedra, corners with six equivalent Li(1)As4 tetrahedra, edges with three equivalent Ce(1)As6 octahedra, and edges with three equivalent Li(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-57°. There are three shorter (2.65 Å) and one longer (2.67 Å) Li(1)-As(1) bond length. Ce(1) is bonded to six equivalent As(1) atoms to form CeAs6 octahedra that share corners with twelve equivalent Li(1)As4 tetrahedra, edges with six equivalent Ce(1)As6 octahedra, and edges with six equivalent Li(1)As4 tetrahedra. All Ce(1)-As(1) bond lengths are 2.93 Å. As(1) is bonded to four equivalent Li(1) and three equivalent Ce(1) atoms to form a mixture of distorted edge and corner-sharing AsLi4Ce3 pentagonal bipyramids.