Materials Data on TmAg(PSe3)2 by Materials Project

TmAg(PSe3)2 crystallizes in the trigonal P-31c space group. The structure is two-dimensional and consists of two TmAg(PSe3)2 sheets oriented in the (0, 0, 1) direction. Tm3+ is bonded to six equivalent Se2- atoms to form TmSe6 octahedra that share edges with three equivalent AgSe6 octahedra. All Tm–Se bond lengths are 2.85 Å. Ag1+ is bonded to six equivalent Se2- atoms to form AgSe6 octahedra that share edges with three equivalent TmSe6 octahedra. All Ag–Se bond lengths are 2.95 Å. P4+ is bonded in a trigonal non-coplanar geometry to three equivalent Se2- atoms. All P–Se bond lengths are 2.21 Å. Se2- is bonded in a 3-coordinate geometry to one Tm3+, one Ag1+, and one P4+ atom.