RhNiAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Rh(1) is bonded in a 9-coordinate geometry to four equivalent Ni(1) and five equivalent As(1) atoms. Ni(1) is bonded to four equivalent Rh(1), four equivalent Ni(1), and four equivalent As(1) atoms to form a mixture of distorted face and corner-sharing NiNi4As4Rh4 cuboctahedra. As(1) is bonded in a 9-coordinate geometry to five equivalent Rh(1) and four equivalent Ni(1) atoms.
RhNiAs is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. Rh(1) is bonded in a 9-coordinate geometry to four equivalent Ni(1) and five equivalent As(1) atoms. All Rh(1)-Ni(1) bond lengths are 2.85 Å. There is one shorter (2.37 Å) and four longer (2.62 Å) Rh(1)-As(1) bond lengths. Ni(1) is bonded to four equivalent Rh(1), four equivalent Ni(1), and four equivalent As(1) atoms to form a mixture of distorted face and corner-sharing NiNi4As4Rh4 cuboctahedra. All Ni(1)-Ni(1) bond lengths are 2.54 Å. All Ni(1)-As(1) bond lengths are 2.36 Å. As(1) is bonded in a 9-coordinate geometry to five equivalent Rh(1) and four equivalent Ni(1) atoms.