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Highly Soluble Supertetrahedra upon Selective Partial Butylation of Chalcogenido Metalate Clusters in Ionic Liquids

Peters, Bertram; Stuhrmann, Gina; Mack, Fabian 1; Weigend, Florian; Dehnen, Stefanie
1 Institut für Physikalische Chemie (IPC), Karlsruher Institut für Technologie (KIT)


Supertetrahedral clusters have been reported in two generally different types so far: one type possessing an organic ligand shell, no or low charges, and high solubility, while the other cluster type is ligand-free with usually high charges and low or no solubility in common solvents. The latter is a tremendous disadvantage regarding further use of the clusters in solution. However, as organic substituents usually broaden the HOMO–LUMO gaps, which cannot be overcompensated by the (limited) cluster sizes, a full organic shielding comes along with drawbacks regarding opto-electronic properties. We therefore sought to find a way of generating soluble clusters with a minimum number of organic substituents. Here, we present the synthesis and full characterization of two salts of [Sn$_{10}$O$_{4}$S$_{16}$(SBu)$_{4}$]$^{4-} that are high soluble in CH$_{2}$Cl$_{2}$ or CH$_{3}$CN, which includes first NMR and mass spectra obtained from solutions of such salts with mostly inorganic supertetrahedral clusters. The optical absorption properties of this new class of compounds indicates nearly unaffected band gaps. The synthetic approach and the spectroscopic findings were rationalized and explained by means of high-level quantum chemical studies.

DOI: 10.1002/anie.202104867
Zitationen: 18
Web of Science
Zitationen: 18
Zitationen: 18
Zugehörige Institution(en) am KIT Institut für Physikalische Chemie (IPC)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 08.2021
Sprache Englisch
Identifikator ISSN: 1433-7851, 1521-3773
KITopen-ID: 1000135787
Erschienen in Angewandte Chemie / International edition
Verlag John Wiley and Sons
Band 60
Heft 32
Seiten 17622-17628
Vorab online veröffentlicht am 11.05.2021
Nachgewiesen in Scopus
Web of Science
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