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Formation of the intermetalloid cluster [AgSn18]7− – the reactivity of coinage metal NHC compounds towards [Sn9]4−

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Abstract

In recent years the formation of intermetalloid clusters by reacting homoatomic tetrel cluster anions with transition metal complexes has become a promising synthetic route. Nevertheless a better understanding of the processes occurring in solution is necessary. Here we present a series of novel polyanionic coinage metal NHC Zintl clusters [NHCDippM(η4-Sn9)]3− (M: Cu, Ag, Au; Dipp: diisopropylphenyl) which are obtained at low temperatures from the reaction of K4Sn9 with NHCDippMCl (M: Cu–Au) in liquid ammonia. For M = Ag a larger intermetalloid AgI-bridged nonastannide dimer [(η4-Sn9)Ag(η1-Sn9)]7− is also formed. The stepwise formation of the intermetalloid cluster [AgSn18]7− is discussed and compared with that of previously reported intermetalloid stannides.

Graphical abstract: Formation of the intermetalloid cluster [AgSn18]7− – the reactivity of coinage metal NHC compounds towards [Sn9]4−

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Publication details

The article was received on 01 Mar 2017, accepted on 22 Mar 2017 and first published on 03 Apr 2017


Article type: Communication
DOI: 10.1039/C7DT00754J
Citation: Dalton Trans., 2017, Advance Article
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    Formation of the intermetalloid cluster [AgSn18]7− – the reactivity of coinage metal NHC compounds towards [Sn9]4−

    F. S. Geitner, W. Klein and T. F. Fässler, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT00754J

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