Materials Data on K3SiTe3 by Materials Project
(K)3SiTe3 crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of twelve potassium molecules and two SiTe3 clusters. In each SiTe3 cluster, Si4- is bonded in a tetrahedral geometry to one Si4- and three Te+0.33+ atoms. The Si–Si bond length is 2.41 Å. There are two shorter (2.54 Å) and one longer (2.55 Å) Si–Te bond lengths. There are two inequivalent Te+0.33+ sites. In the first Te+0.33+ site, Te+0.33+ is bonded in a single-bond geometry to one Si4- atom. In the second Te+0.33+ site, Te+0.33+ is bonded in a single-bond geometry to one Si4- atom.
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