TmNiAs is hexagonal omega structure-derived structured and crystallizes in the hexagonal P-6m2 space group. Tm(1) is bonded to six equivalent Ni(1) and six equivalent As(1) atoms to form a mixture of edge and face-sharing TmNi6As6 cuboctahedra. Ni(1) is bonded in a distorted trigonal planar geometry to six equivalent Tm(1) and three equivalent As(1) atoms. As(1) is bonded in a 9-coordinate geometry to six equivalent Tm(1) and three equivalent Ni(1) atoms.
TmNiAs is hexagonal omega structure-derived structured and crystallizes in the hexagonal P-6m2 space group. Tm(1) is bonded to six equivalent Ni(1) and six equivalent As(1) atoms to form a mixture of edge and face-sharing TmNi6As6 cuboctahedra. All Tm(1)-Ni(1) bond lengths are 3.00 Å. All Tm(1)-As(1) bond lengths are 3.00 Å. Ni(1) is bonded in a distorted trigonal planar geometry to six equivalent Tm(1) and three equivalent As(1) atoms. All Ni(1)-As(1) bond lengths are 2.30 Å. As(1) is bonded in a 9-coordinate geometry to six equivalent Tm(1) and three equivalent Ni(1) atoms.