Li2PrP2 crystallizes in the trigonal P-3m1 space group. Li(1) is bonded to four equivalent P(1) atoms to form LiP4 tetrahedra that share corners with six equivalent Pr(1)P6 octahedra, corners with six equivalent Li(1)P4 tetrahedra, edges with three equivalent Pr(1)P6 octahedra, and edges with three equivalent Li(1)P4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-55°. Pr(1) is bonded to six equivalent P(1) atoms to form PrP6 octahedra that share corners with twelve equivalent Li(1)P4 tetrahedra, edges with six equivalent Pr(1)P6 octahedra, and edges with six equivalent Li(1)P4 tetrahedra. P(1) is bonded to four equivalent Li(1) and three equivalent Pr(1) atoms to form a mixture of distorted edge and corner-sharing PLi4Pr3 pentagonal bipyramids.
Li2PrP2 crystallizes in the trigonal P-3m1 space group. Li(1) is bonded to four equivalent P(1) atoms to form LiP4 tetrahedra that share corners with six equivalent Pr(1)P6 octahedra, corners with six equivalent Li(1)P4 tetrahedra, edges with three equivalent Pr(1)P6 octahedra, and edges with three equivalent Li(1)P4 tetrahedra. The corner-sharing octahedral tilt angles range from 15-55°. There are three shorter (2.58 Å) and one longer (2.60 Å) Li(1)-P(1) bond length. Pr(1) is bonded to six equivalent P(1) atoms to form PrP6 octahedra that share corners with twelve equivalent Li(1)P4 tetrahedra, edges with six equivalent Pr(1)P6 octahedra, and edges with six equivalent Li(1)P4 tetrahedra. All Pr(1)-P(1) bond lengths are 2.95 Å. P(1) is bonded to four equivalent Li(1) and three equivalent Pr(1) atoms to form a mixture of distorted edge and corner-sharing PLi4Pr3 pentagonal bipyramids.