The First End-On Bonded Superoxo Complexes of Ga and In: The Oxygen-Rich Compounds GaO4 and InO4

✍ Scribed by Benjamin Gaertner; Andreas Köhn; Hans-Jörg Himmel

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 184 KB
• Volume: 2006
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200501116

✦ Synopsis

Abstract

We report the first sighting and characterization of the oxygen‐rich molecules GaO~4~ and InO~4~, being the products of a three‐step process taking place in an Ar matrix. This process includes (i) reaction of Ga or In atoms (M) with one dioxygen molecule to give the cyclic superoxo complex MO~2~, (ii) photoisomerization into linear OMO by the action of UV light, and (iii) reaction of linear OMO with an additional O~2~ molcule. The molecules can be described as end‐on bonded superoxo complexes OMO(O~2~). On the basis of the observed isotopic data the O–Ga–O angle can be estimated to be ca. 165°. In addition to the experimental studies, quantum chemical calculations were performed to achieve a more complete characterization of these interesting new and unusual molecules, representing the first ever found examples of end‐on bonded superoxo complexes of Ga and In. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)