Dynamics of Benzene Rings in MIL-53(Cr) and MIL-47(V) Frameworks Studied by 2H NMR Spectroscopy

Authors

  • Daniil I. Kolokolov,

    1. Université Lyon 1, CNRS, UMR 5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de LYON, 2. Av. A. Einstein, 69626 Villeurbanne (France)
    2. Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090 (Russia)
    Search for more papers by this author
  • Hervé Jobic Dr.,

    1. Université Lyon 1, CNRS, UMR 5256, IRCELYON, Institut de Recherches sur la Catalyse et l'Environnement de LYON, 2. Av. A. Einstein, 69626 Villeurbanne (France)
    Search for more papers by this author
  • Alexander G. Stepanov Dr.,

    1. Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, Prospekt Akademika Lavrentieva 5, Novosibirsk 630090 (Russia)
    Search for more papers by this author
  • Vincent Guillerm,

    1. Institut Lavoisier, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, 78035 Versailles Cedex (France)
    Search for more papers by this author
  • Thomas Devic Dr.,

    1. Institut Lavoisier, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, 78035 Versailles Cedex (France)
    Search for more papers by this author
  • Christian Serre Dr.,

    1. Institut Lavoisier, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, 78035 Versailles Cedex (France)
    Search for more papers by this author
  • Gérard Férey Prof.

    1. Institut Lavoisier, UMR CNRS 8180, Université de Versailles Saint-Quentin-en-Yvelines, 78035 Versailles Cedex (France)
    Search for more papers by this author

  • This work was performed in a frame of French-Russian Laboratory of Catalysis. The work was supported by the Russian Foundation for Basic Research (grants no. 05-03-34762, 09-03-93113), and the ANR (NoMAC project)

Abstract

original image

Rotational dynamics of benzene rings in the flexible MIL-53 and rigid MIL-47 frameworks was investigated by 2H NMR spectroscopy. In both cases, 180° flips are observed, and the flipping rate is higher in MIL-53. To simulate experimental spectra (left), consideration of the quadrupolar interaction alone is not sufficient (middle); the paramagnetic effect must also be taken into account (right).

Ancillary