Embryonic brass pseudo two electron Cu/Zn clusters

Hung Banh (1) , Julius Hornung (1) , Thilo Kratz (1) , Christian Gemel (1) , Alexander Poethig (1) , Franck Gam (2) , Samia Kahlal (2) , Jean-Yves Saillard (2) , Roland A. Fischer (1)

1 TUM - Technische Universität Munchen - Technical University Munich - Université Technique de Munich
2 ISCR - Institut des Sciences Chimiques de Rennes

The isoelectronic M clusters [CuZn](Cp*) () and {[CuZn](Cp*)} () are described. While can be isolated only as a minor side product from the reaction of Cu(CHCO) with equimolar amounts of [ZnCp*] with the trigonal cluster [CuZn](Cp*) as the major product, is available in acceptable yields from the reaction of [CuZn](Cp*) with the Cp*Zn-transfer-reagent [Cp*Zn(EtO)][BAr]. 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 ( brass) inspired clusters.

Domaines: Chimie de coordination

Hung Banh, Julius Hornung, Thilo Kratz, Christian Gemel, Alexander Poethig, et al.. Embryonic brass pseudo two electron Cu/Zn clusters. Chemical Science, 2018, 9 (48), pp.8906-8913. ⟨10.1039/c8sc03902j⟩. ⟨hal-01997972⟩