Materials Data on Tm3TlS6 by Materials Project
TmTm2TlS4(S)2 crystallizes in the orthorhombic Cmmm space group. The structure is two-dimensional and consists of four hydrogen sulfide molecules; two thulium molecules; and one Tm2TlS4 sheet oriented in the (0, 0, 1) direction. In the Tm2TlS4 sheet, Tm3+ is bonded in a linear geometry to two equivalent S2- atoms. Both Tm–S bond lengths are 2.41 Å. Tl3+ is bonded in a square co-planar geometry to four equivalent S2- atoms. All Tl–S bond lengths are 2.83 Å. S2- is bonded in a linear geometry to one Tm3+ and one Tl3+ atom.
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