5 years ago

From a (Pseudo) Aluminum Sesquihalide Al2(Et)3(ORF)3 to Me3Si–Cl–Al(ORF)3 (RF = C(CF3)3)

From a (Pseudo) Aluminum Sesquihalide Al2(Et)3(ORF)3 to Me3Si–Cl–Al(ORF)3 (RF = C(CF3)3)
Ian Riddlestone, Harald Scherer, Olaf Petersen, Ingo Krossing, Arthur Martens
By reaction of AlEt3 with less than 3 equiv of HORF (RF = C(CF3)3) the ethylaluminum sesquialkoxide (Et)2Al(μ-ORF)2Al(Et)(ORF) (1a; NMR, XRD) can be obtained. As a univalent electronegative residue, the perfluorinated alkoxy moieties can be seen as pseudohalides. In this respect, 1a represents the closest approximation to the hitherto unknown crystal structure of the alkylaluminum sesquihalide Al2R3X3. By further reaction of 1a with HORF, the Lewis superacid Al(ORF)3 is formed, which reacts with Me3SiCl to give Me3Si–Cl–Al(ORF)3 (2a; NMR, XRD, IR, Raman). 2a can be used for further reactions as prepared but slowly decomposes at ca. 0 °C to give the known Me3Si–F–Al(ORF)3 (2b) and several byproducts. The observed decomposition products, combined with quantum chemical calculations, provide evidence for an even higher silylating potential of 2a over that of 2b.

Publisher URL: http://dx.doi.org/10.1021/acs.organomet.7b00557

DOI: 10.1021/acs.organomet.7b00557

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.