SmAsO4 is Zircon-like structured and crystallizes in the monoclinic P2_1/c space group. Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sm(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Sm(1) and one As(1) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to two equivalent Sm(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Sm(1) and one As(1) atom.
SmAsO4 is Zircon-like structured and crystallizes in the monoclinic P2_1/c space group. Sm(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. There is one shorter (2.41 Å) and one longer (2.51 Å) Sm(1)-O(1) bond length. There is one shorter (2.44 Å) and one longer (2.47 Å) Sm(1)-O(2) bond length. There is one shorter (2.49 Å) and one longer (2.60 Å) Sm(1)-O(3) bond length. There is one shorter (2.47 Å) and one longer (2.52 Å) Sm(1)-O(4) bond length. As(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The As(1)-O(1) bond length is 1.72 Å. The As(1)-O(2) bond length is 1.72 Å. The As(1)-O(3) bond length is 1.72 Å. The As(1)-O(4) bond length is 1.72 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sm(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Sm(1) and one As(1) atom. In the third O site, O(3) is bonded in a 1-coordinate geometry to two equivalent Sm(1) and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Sm(1) and one As(1) atom.