Abstract
Although metal–metal bonding is important in the chemistry of both solid-state intermetallic compounds and molecular species, the study of this bonding is limited by the compounds available and it is rarely possible to identify connections between these two areas. In this study, molecular intermetalloids [Ln(ReCp2)3] (Ln = Sm, Lu and La) have been synthesized that contain lanthanoid metals bound only to transition metals. Although they are highly reactive species, such lanthanoid-core transition-metal-shell compounds can be stable in solution. They mimic the bonding situation of intermetallic compounds, as revealed by a direct comparison of molecular and solid state lanthanoid–transition metal bonding.
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Acknowledgements
We thank the Deutsche Forschungsgemeinschaft, SPP 1166 ‘Lanthanoid-spezifische Funktionalitäten in Molekül und Material’ for financial support. We acknowledge U. Schwarz and W. Schnelle for IR and magnetization measurements, respectively.
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M.V.B. carried out the synthesis experiments and analysed the NMR spectroscopic data. C.D. performed the X-ray single crystal structure analyses. V.B. carried out the computations of the organometallic molecule. F.R.W. and Y.G. performed the analysis of structural analogies and chemical bonding. R.K. originated the central idea and wrote the manuscript with contributions from all the co-authors.
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Crystallographic data for compound 1 (CIF 23 kb)
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Crystallographic data for compound 2 (CIF 22 kb)
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Crystallographic data for compound 3 (CIF 24 kb)
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Crystallographic data for compound 4 (CIF 32 kb)
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Butovskii, M., Döring, C., Bezugly, V. et al. Molecules containing rare-earth atoms solely bonded by transition metals. Nature Chem 2, 741–744 (2010). https://doi.org/10.1038/nchem.718
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DOI: https://doi.org/10.1038/nchem.718
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