Reaktionsverhalten von Chalkogenostannaten: Ungewöhnliche Synthese und Struktur einer Verbindung mit einem ternären Clusteranion [Co4(μ4-Se)(SnSe4)4]10

Abstract

In Wasser und Methanol gelingt es, anders als in aprotischen Lösungsmitteln, das Zinn‐Chalkogen‐Gerüst unzersetzt in die Koordinationssphäre der Übergangsmetallionen zu überführen. Die Umsetzung von K4[SnSe4] mit [Co(en)3]Cl3 führte zur Bildung des Clusterkomplexes 1 mit hoch geladenen, rein anorganischen ternären Anionen.

Variations in the Interplay of Intermetallic and Metal Chalcogenide Units in Organotin–Copper Selenide Clusters

“…In the last decades, a large variety of ternary metal chalcogenide clusters have been studied, ranging from small, ligand-stabilized heterocubanes to huge anionic supertetrahedra or spherical molecules, featuring different transition or main-group metals, respectively, or combining both. − Because of their (photo)­conductive properties, the elemental combinations Cu/Sn/S and Cu/Sn/Se, in particular, have been of interest; hence, corresponding clusters were addressed as potential precursor materials for thin-film solar cells, based on Cu 2 ZnSnSe 4 (CZTSe) or Cu 2 ZnSn­(S 1– x Se x ) 4 , or as thermoelectric materials like Cu 2 SnSe 3 or Cu 2 SnSe 4 . − Another reason for studying metal chalcogenide clusters, especially with electron-rich organic ligands, is the recent finding of an extreme nonlinear optical behavior of this class of compounds − or their use as molecular models of the attachment of clusters to transition-metal dichalcogenide surfaces …”