Angewandte Chemie - International Edition
Angewandte Chemie - International Edition
5 years ago

Scandium-Mediated Formation of a Bis(tetrahydropentalene)

Scandium-Mediated Formation of a Bis(tetrahydropentalene)
Phil Liebing, Sabine Busse, Caecilia Maichle-Mössmer, Liane Hilfert, Volker Lorenz, Frank T. Edelmann, Janek Rausch
The reactivity of Li[Sc(COT′′)2] (1; COT′′=1,4-bis(trimethylsilyl)cyclooctatetraenyl) towards CoCl2 is considerably different from that of related lanthanide triple-decker sandwich complexes. In addition to the expected triple-decker complex Sc2(COT′′)3 (2), the complex Sc2{μ-BTHP}(COT′′)2 (3) is formed, which comprises the novel BTHP2− ligand (BTHP2−=bis(3,5-bis(trimethylsilyl)-1,3a,6,6a-tetrahydropentalene-1-yl)diide or bis(2,7-bis(trimethylsilyl)bicyclo[3.3.0]octa-2,7-dien-4-yl)diide, C16H10(SiMe3)42−). The formation of 3 is likely facilitated by the fact that scandium prefers η8,η3 coordination rather than highly symmetric η8,η8 coordination, and the η3-coordinated COT′′ ligand in 1 is activated owing to a loss of aromaticity. Acid hydrolysis of 3 leads to air-stable H2BTHP (4). Unusual coordination: A unique bis(tetrahydropentalene) has been constructed via a series of structurally remarkable scandium complexes. Its formation is likely promoted by the fact that scandium prefers η8,η3 over η8,η8 coordination.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/anie.201703362

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.