P-07 - Advances in Organic and Inorganic Chemistry

Reduction and Transformation of the Green House Gas SF6 into a Deoxyfluorinating Reagent

Pooja Tomar, Thomas Braun and Erhard Kemnitz

Institut für Chemie, Humboldt-Universität zu Berlin, Humboldt-Universität zu Berlin Institut für Chemie Brook-Taylor-Straße 2 12489 Berlin, 12489, Berlin, GER

Owing to its unique properties such as chemical and thermal inertness, SF6 is a substrate of commercial interest.1 This as a consequence resulted in the remarkable increase of SF6 in atmosphere. Using electron rich N-heterocyclic carbenes (NHC) for the reduction of SF6 is a safe and effective method to not only degrade SF6, but also transform it into a deoxyfluorinating reagent.2 Electronically different NHCs were studied to compare their efficiency for reducing or degrading the SF6. N-heterocyclic carbenes are found also very reactive towards SF4 to give a mixture of the same products as obtained in case of SF6. Furthermore, this mixture of products can successfully be used in deoxyfluorination reactions.3 4 Hence SF6 can be selectively degraded to non-volatile and well defined products, which in turn can be employed for C-F bond formation.

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Reduction of SF6 by SIMes with UV radiation to generate a deoxyfluorinating reagent.

  1. K. Seppelt, CHEM REV (2015), 115, 1296.

  2. P.Tomar, T. Braun, E. Kemnitz, CHEM COMMUN (2018), 54, 9753.

  3. P. Tang, W. Wang, T. Ritter, J AM CHEM SOC (2011), 133, 11482.

  4. C. Berg, T. Braun, M. Ahrens, P. Wittwer, R. Herrmann, ANGEW CHEM INT ED (2017), 56, 4300