SmAsO2 crystallizes in the tetragonal I4_1/a space group. Sm(1) is bonded to six equivalent O(1) atoms to form edge-sharing SmO6 octahedra. As(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to three equivalent Sm(1) and two equivalent As(1) atoms to form a mixture of distorted edge and corner-sharing OSm3As2 trigonal bipyramids.
SmAsO2 crystallizes in the tetragonal I4_1/a space group. Sm(1) is bonded to six equivalent O(1) atoms to form edge-sharing SmO6 octahedra. There are two shorter (2.38 Å) and four longer (2.40 Å) Sm(1)-O(1) bond lengths. As(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. There are two shorter (2.36 Å) and two longer (2.37 Å) As(1)-O(1) bond lengths. O(1) is bonded to three equivalent Sm(1) and two equivalent As(1) atoms to form a mixture of distorted edge and corner-sharing OSm3As2 trigonal bipyramids.