Cover Picture: Full Exploration of the Diels–Alder Cycloaddition on Metallofullerenes M3N@C80 (M=Sc, Lu, Gd): The D5h versus Ih Isomer and the Influence of the Metal Cluster (Chem. Eur. J. 29/2012)

Authors

  • Dr. Sílvia Osuna,

    1. Department of Chemistry and Biochemistry, University of California, Los Angeles, 607 Charles E. Young Drive, Los Angeles, CA 90095 (USA)
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  • Dr. Ramón Valencia,

    1. Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, c/Marcel⋅lí Domingo s/n, Campus Sescelades, 43007 Tarragona (Spain)
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  • Dr. Antonio Rodríguez-Fortea,

    Corresponding author
    1. Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, c/Marcel⋅lí Domingo s/n, Campus Sescelades, 43007 Tarragona (Spain)
    • Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, c/Marcel⋅lí Domingo s/n, Campus Sescelades, 43007 Tarragona (Spain)
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  • Prof. Marcel Swart,

    Corresponding author
    1. Institut de Química Computacional i Departament de Química, Universitat de Girona, Campus Montilivi s/n, 17071 Girona (Spain)
    2. Institució Catalana de Recerca i Estudis Avançats (ICREA), Pg. Lluís Companys 23, 08010 Barcelona (Spain)
    • Institut de Química Computacional i Departament de Química, Universitat de Girona, Campus Montilivi s/n, 17071 Girona (Spain)
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  • Prof. Miquel Solà,

    Corresponding author
    1. Institut de Química Computacional i Departament de Química, Universitat de Girona, Campus Montilivi s/n, 17071 Girona (Spain)
    • Institut de Química Computacional i Departament de Química, Universitat de Girona, Campus Montilivi s/n, 17071 Girona (Spain)
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  • Prof. Josep M. Poblet

    Corresponding author
    1. Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, c/Marcel⋅lí Domingo s/n, Campus Sescelades, 43007 Tarragona (Spain)
    • Departament de Química Física i Inorgànica, Universitat Rovira i Virgili, c/Marcel⋅lí Domingo s/n, Campus Sescelades, 43007 Tarragona (Spain)
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Abstract

original image

Endohedral metallofullerenes (EMFs) have attracted much more attention since the synthesis of the most abundant EMF, Sc3N@C80, in 1999 by Dorn and co-workers. In their Full Paper on page 8944 ff., A. Rodríguez-Fortea, M. Swart, M. Solà, J. M. Poblet et al. report a detailed theoretical analysis of the Diels–Alder cycloaddition of s-cis-1,3-butadiene on Sc3N@C80 and other related systems. Calculations show that the kinetic analysis is necessary to rationalize the reactivity properties of EMFs.

Olefin Metathesis

The complete removal of ruthenium residues from olefin metathesis reaction products is rather challenging and often poses serious problems. In the Minireview on page 8868 ff., G. C. Vougioukalakis discusses all available strategies for the removal of ruthenium impurities from olefin metathesis post-reaction mixtures. In view of the fact that there are many different approaches dealing with this problem, this work will serve as a valuable guide for the synthetic chemist utilizing ruthenium-catalyzed metathesis reactions in the synthesis of either organic or polymeric materials.

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Nanomachines

In their Communication on page 8925 ff., G. Rapenne et al. report on a new family of nanowheels and have shown how they can contribute to the development of nanomachines, such as nanovehicles, which require wheels to move efficiently on a surface, pushed by the STM tip, with the aim of transporting small molecules (nanocarrier machines) long distances.

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Aromatic Interactions

In their Full Paper on page 8934 ff., C. F. R. A. C. Lima, L. M. N. B. F. Santos et al. describe the experimental evaluation of the intramolecular interaction enthalpy between the two aryl rings in various substituted 1,8-diphenylnaphthalenes. The major contribution ruling aromatic interactions in these systems is dispersion forces, rather than electrostatic forces.

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Ancillary