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Technische Universität Berlin Straße des 17. Juni 135 10623 Berlin, Germany http://www.tu-berlin.de
Contact Mr Prof. Dr. Matthias Drieß +49 30 31429731
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Technische Universität Berlin

Erfolgreiche Aktivierung von Sauerstoff durch Silizium

Weltweit erste Herstellung von stabilen ringformigen Siliziumperoxid- und Silanonkomplexen mit einer Silizium-Sauerstoff-Doppelbindung / Veröffentlichung in "Nature Chemistry"

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In der neuen Online-Ausgabe der Zeitschrift "Nature Chemistry" (DOI: 10.1038/NCHEM.666) berichten Matthias Drieß, Professor für Chemie an der Technischen Universität Berlin und Sprecher des Exzellenzclusters UniCat, und seine Mitarbeiter über die erfolgreiche Aktivierung von Sauerstoff durch Silizium.

Zweiwertiges Silizium kann gezielt und unter milden Bedingungen das Disauerstoffmolekül der Luft aktivieren. Im ersten Schritt bildet sich ein extrem energiereiches ringförmiges Siliziumperoxid mit einem SiO2-Ring, der anschließend mindestens ein Sauerstoffatom auf eine andere Verbindung übertragen kann. Dieser SiO2-Ring war aber bisher nur bei extrem tiefen Temperaturen von - 233 °C in einer Argon-Matrix stabil. Der extrem gespannte SiO2-Dreiring konnte also nur sxuww Uilqbyxudoyu wui raf Nnybbwv tjxlgrj tsvxpm.

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