Kontakt Autoren

    Peter Höhn
    Telefon: +49 351 4646-2229
    Fax: +49 351 4646-2260
    Franziska Jach
    Telefon: +49 351 4646-2209
    Fax: +49 351 4646-4002

    Kontakt Presse

    Rosner, Helge
    Helge Rosner
    Gruppenleiter
    Telefon: +49 351 4646-2233
    Fax: +49 351 4646-4902

    Originalpublikation

    1.
    Franziska Jach, Stephan Ingmar Brückner, Alexander Ovchinnikov, Anna Isaeva, Matej Bobnar, Matthias Friedrich Groh, Eike Brunner, Peter Höhn, and Michael Ruck, "The Triply Deprotonated Acetonitrile Anion CCN3− Stabilized in a Solid," Angewandte Chemie International Edition in English 56, 2919-2922 (2017).
    2.
    Franziska Jach, Stephan Ingmar Brückner, Alexander Ovchinnikov, Anna Isaeva, Matej Bobnar, Matthias Friedrich Groh, Eike Brunner, Peter Höhn, and Michael Ruck, "The Triply Deprotonated Acetonitrile Anion CCN3− Stabilized in a Solid," Angewandte Chemie 129, 2965-2968 (2017).

    Pressemeldung

    From graphite and nitrogen to CCN3– in just one step

    22. Februar 2017

    The first experimental realization of the long-sought triply deprotonated acetonitrile anion CCN3– succeeded by a remarkably simple solid state synthesis at moderate conditions (650 °C). CCN3– forms from the usually unreactive elements carbon and nitrogen owing to metal activation. This route is unparalleled in comparison with typical synthetic routes to N-containing organic compounds or carbon nitrides that employ reactive precursors like ammonia for C–N bond-formation.

    A team of scientists from MPI for Chemical Physics of Solids and TU Dresden, Germany were able to stabilize the CO2 isoelectronic acetonitriletriide anion CCN3– in the bulk host framework of the Ba5[TaN4][C2N] nitridometalate. The molecular structure of the CCN3– anion was verified by various methods such as NMR and vibrational spectroscopy as well as quantum chemical calculations. Examination of the anion’s bonding situation revealed a shift of the electron pairs towards two double bonds in contrast to the acetonitrile molecule H3C–C≡N.

    CCN3– is the most recent example of electron-rich anions being stabilized within a combined framework of a nitridometalate structure and alkaline-earth cations. Other examples include cynamide anions CN22 as well as highly reduced cyano metalates such as [Co(CN)3]6–. Alkaline-earth rich nitridometalates might be a promising “cradle” for more highly charged anions, and the employed synthetic approach could be the basis for a generalized stabilization concept.

    PH, FJ / CPfS

    <p>Metal activation of graphite and nitrogen leads to the unprecedented acetonitriletriide anion CCN<sup>3–</sup> stabilized in the nitridometalate Ba<sub>5</sub>[TaN<sub>4</sub>][C<sub>2</sub>N].</p>

    Metal activation of graphite and nitrogen leads to the unprecedented acetonitriletriide anion CCN3– stabilized in the nitridometalate Ba5[TaN4][C2N].

     
    loading content