TbSI crystallizes in the hexagonal P-6m2 space group. Tb(1) is bonded in a trigonal planar geometry to three equivalent S(1) and six equivalent I(1) atoms. S(1) is bonded in a trigonal planar geometry to three equivalent Tb(1) atoms. I(1) is bonded to six equivalent Tb(1) atoms to form a mixture of distorted edge, face, and corner-sharing ITb6 pentagonal pyramids.
TbSI crystallizes in the hexagonal P-6m2 space group. Tb(1) is bonded in a trigonal planar geometry to three equivalent S(1) and six equivalent I(1) atoms. All Tb(1)-S(1) bond lengths are 2.63 Å. All Tb(1)-I(1) bond lengths are 3.67 Å. S(1) is bonded in a trigonal planar geometry to three equivalent Tb(1) atoms. I(1) is bonded to six equivalent Tb(1) atoms to form a mixture of distorted edge, face, and corner-sharing ITb6 pentagonal pyramids.