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Issue 48, 2018
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Embryonic brass: pseudo two electron Cu/Zn clusters

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Abstract

The isoelectronic M7 clusters [Cu3Zn4](Cp*)5 (1) and {[Cu2Zn5](Cp*)5}+ (2) are described. While 1 can be isolated only as a minor side product from the reaction of Cu(CH3CO2) with equimolar amounts of [Zn2Cp*2] with the trigonal cluster [CuZn2](Cp*)3 as the major product, 2 is available in acceptable yields from the reaction of [CuZn2](Cp*)3 with the Cp*Zn2-transfer-reagent [Cp*Zn2(Et2O)3][BAr4F]. The trigonal bipyramidal Cu/Zn-clusters exhibit exceptional bonding situations: with formally only one skeleton electron pair they can be regarded as highly electron deficient. However, a detailed DFT analysis reveals that the cluster bonding is supported by 3d orbital contributions of the trigonal metal base unit. The data contribute to the development of an advanced tool-box for synthesis of Hume-Rothery intermetallic (e.g. brass) inspired clusters.

Graphical abstract: Embryonic brass: pseudo two electron Cu/Zn clusters

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Supplementary files

Article information


Submitted
01 Sep 2018
Accepted
26 Oct 2018
First published
01 Nov 2018

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2018,9, 8906-8913
Article type
Edge Article

Embryonic brass: pseudo two electron Cu/Zn clusters

H. Banh, J. Hornung, T. Kratz, C. Gemel, A. Pöthig, F. Gam, S. Kahlal, J. Saillard and R. A. Fischer, Chem. Sci., 2018, 9, 8906
DOI: 10.1039/C8SC03902J

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