Materials Data on Tm2TeS2 by Materials Project
Tm2TeS2 is Corundum-derived structured and crystallizes in the orthorhombic Immm space group. The structure is three-dimensional. Tm3+ is bonded to two equivalent Te2- and four equivalent S2- atoms to form a mixture of edge and corner-sharing TmTe2S4 octahedra. The corner-sharing octahedra tilt angles range from 0–21°. Both Tm–Te bond lengths are 3.04 Å. There are two shorter (2.69 Å) and two longer (2.70 Å) Tm–S bond lengths. Te2- is bonded in a square co-planar geometry to four equivalent Tm3+ atoms. S2- is bonded to four equivalent Tm3+ atoms to form a mixture of distorted edge and corner-sharing STm4 trigonal pyramids.
36 MATERIALS SCIENCE↗