Materials Data on As3Rh by Materials Project
RhAs3 is Skutterudite structured and crystallizes in the cubic Im-3 space group. The structure is three-dimensional. Rh3+ is bonded to six equivalent As1- atoms to form RhAs6 octahedra that share corners with six equivalent RhAs6 octahedra and corners with twelve equivalent AsAs2Rh2 tetrahedra. The corner-sharing octahedral tilt angles are 59°. All Rh–As bond lengths are 2.47 Å. As1- is bonded to two equivalent Rh3+ and two equivalent As1- atoms to form distorted AsAs2Rh2 tetrahedra that share corners with four equivalent RhAs6 octahedra, corners with ten equivalent AsAs2Rh2 tetrahedra, and an edgeedge with one AsAs2Rh2 tetrahedra. The corner-sharing octahedra tilt angles range from 69–70°. There are one shorter (2.52 Å) and one longer (2.60 Å) As–As bond lengths.