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Molecules containing rare-earth atoms solely bonded by transition metals

Nature Chemistry volume 2, pages 741744 (2010) | Download Citation

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.

  • Compound C30H30Re3Sm

    Tris(di-η5-cyclopentadienyl-ruthenyl)samarium

  • Compound C30H30LuRe3

    Tris(di-η5-cyclopentadienyl-ruthenyl)lutetium

  • Compound C30H30LaRe3

    Tris(di-η5-cyclopentadienyl-ruthenyl)lanthanum

  • Compound C48H54La2O2Re4

    Bis[(di-η5-cyclopentadienyl-ruthenyl)(η5-cyclopentadienyl-η53-cyclopentadiendiyl-ruthenyl)(tetrahydrofuran)lanthanum]

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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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Affiliations

  1. Lehrstuhl Anorganische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany

    • Mikhail V. Butovskii
    • , Christian Döring
    •  & Rhett Kempe
  2. Max-Planck-Institut für Chemische Physik fester Stoffe, 01187 Dresden, Germany

    • Viktor Bezugly
    • , Frank R. Wagner
    •  & Yuri Grin

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Contributions

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.

Competing interests

The authors declare no competing financial interests.

Corresponding authors

Correspondence to Frank R. Wagner or Yuri Grin or Rhett Kempe.

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DOI

https://doi.org/10.1038/nchem.718

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