K10M4Sn4S17 (M = Mn, Fe, Co, Zn): Soluble Quaternary Sulfides with the Discrete [M4Sn4S17]10- Supertetrahedral Clusters

Four cubic compounds are reported that contain the supertetrahedral cluster [M(4)Sn(4)S(17)](10)(-) where M = Mn, Fe, Co, Zn. The cluster features a central quadruply bridging sulfide ion (mu(4)-S) that holds together four divalent M atoms in a tetrahedral arrangement. This core is capped with four tridentate [SnS(4)](4)(-) fragments to complete the structure.