Article abstract

Nature Chemistry 1, 322 - 325 (2009)
Published online: 22 June 2009 | doi:10.1038/nchem.255

Subject Category: Inorganic chemistry

Carboalumination of a chromium–chromium quintuple bond

Awal Noor1, Germund Glatz1, Robert Müller2, Martin Kaupp2, Serhiy Demeshko3 & Rhett Kempe1

Bonds are at the very heart of chemistry. Although the order of carbon–carbon bonds only extends to triple bonds, metal–metal bond orders of up to five are known for stable compounds, particularly between chromium atoms. Carbometallation and especially carboalumination reactions of carbon–carbon double and triple bonds are a well established synthetic protocol in organometallic chemistry and organic synthesis. We now extend these reactions to compounds containing chromium–chromium quintuple bonds. Analogous reactivity patterns indicate that such quintuple bonds are not as exotic as previously assumed. Yet the particularities of these reactions reflect the specific nature of the high metal–metal bond orders.

  1. Lehrstuhl Anorganische Chemie II, Universität Bayreuth, 95440 Bayreuth, Germany
  2. Institut für Anorganische Chemie, Am Hubland, 97074 Universität Würzburg, Germany
  3. Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany

Correspondence to: Martin Kaupp2 e-mail:

Correspondence to: Rhett Kempe1 e-mail: