Tm(AsO)2 crystallizes in the tetragonal I4_1/amd space group. Tm(1) is bonded in a distorted linear geometry to four equivalent As(1) and two equivalent O(1) atoms. As(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Tm(1) and one O(1) atom. O(1) is bonded in a bent 150 degrees geometry to one Tm(1) and one As(1) atom.
Tm(AsO)2 crystallizes in the tetragonal I4_1/amd space group. Tm(1) is bonded in a distorted linear geometry to four equivalent As(1) and two equivalent O(1) atoms. All Tm(1)-As(1) bond lengths are 2.88 Å. Both Tm(1)-O(1) bond lengths are 2.10 Å. As(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Tm(1) and one O(1) atom. The As(1)-O(1) bond length is 1.76 Å. O(1) is bonded in a bent 150 degrees geometry to one Tm(1) and one As(1) atom.