First Scandium Phosphonioketene

  • Author: Chemistry – A European Journal
  • Published Date: 14 August 2019
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
thumbnail image: First Scandium Phosphonioketene

Related Societies

The insertion of CO into metal–carbon bonds is an important elementary reaction in organometallic chemistry. Reactions of CO with mononuclear transition-metal alkylidene (or carbene) complexes have been well-studied. In contrast, there had been no example of a reaction of mononuclear rare‐earth metal alkylidene complexes with CO so far.

Yaofeng Chen and Li Xiang, Shanghai Institute of Organic Chemistry, University of the Chinese Academy of Sciences, Qian Peng, Nankai University, Tianjin, China, and colleagues have performed a reaction of CO with a mononuclear rare-earth metal alkylidene complex. The product is the first rare-earth phosphonioketene: a scandium phosphonioketene (pictured). The team started from a scandium phosphoniomethylidene [LSc(CHPPh3)I] (L = [MeC(NDIPP)CHC(NDIPP)Me], DIPP = 2,6‐(iPr)2C6H3). This complex reacts with CO in toluene at room temperature to give the desired product in 94 % yield.

The scandium phosphonioketene shows high reactivity. A series of unsaturated substrates, including carbon dioxide, ketones, imines, nitriles, and isocyanides, can easily insert into the highly polar Sc–C bond in this complex under mild conditions.


Article Views: 1119

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH