SmAsSe crystallizes in the orthorhombic Pnma space group. Sm(1) is bonded in a 9-coordinate geometry to four equivalent As(1) and five equivalent Se(1) atoms. As(1) is bonded in a 6-coordinate geometry to four equivalent Sm(1) and two equivalent As(1) atoms. Se(1) is bonded to five equivalent Sm(1) atoms to form a mixture of distorted corner and edge-sharing SeSm5 trigonal bipyramids.
SmAsSe crystallizes in the orthorhombic Pnma space group. Sm(1) is bonded in a 9-coordinate geometry to four equivalent As(1) and five equivalent Se(1) atoms. There are a spread of Sm(1)-As(1) bond distances ranging from 3.10-3.24 Å. There are a spread of Sm(1)-Se(1) bond distances ranging from 2.94-3.08 Å. As(1) is bonded in a 6-coordinate geometry to four equivalent Sm(1) and two equivalent As(1) atoms. Both As(1)-As(1) bond lengths are 2.56 Å. Se(1) is bonded to five equivalent Sm(1) atoms to form a mixture of distorted corner and edge-sharing SeSm5 trigonal bipyramids.