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http://dx.doi.org/10.1002/anie.201405339 | DOI Listing |
Chemistry
September 2016
Departamento de Química and Centro de Química, Universidade de Coimbra, 3004-535, Coimbra, Portugal.
Recently, Clyburne and co-workers [Science, 2014, 344, 75-78] reported the novel synthesis of the elusive cyanoformate anion, NCCO . The stability of this anion is dependent on the dielectric constant of the local environment (polarity-switchable solvent): it is stable in low-polarity media and unstable in high-polarity solvents; hence, capturing and then releasing CO . The possibility of extending such behaviour to other anions is explored herein.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
August 2014
Universität Rostock, Institut für Chemie, Albert-Einstein-Strasse 3a, 18059 Rostock (Germany) http://www.chemie.uni-rostock.de/ac/schulz; "Leibniz-Institut für Katalyse e.V." an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock (Germany).
Science
April 2014
The Atlantic Centre for Green Chemistry, Department of Chemistry, Saint Mary's University, Halifax, Nova Scotia, B3H 3C3, Canada.
Why does cyanide not react destructively with the proximal iron center at the active site of 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase, an enzyme central to the biosynthesis of ethylene in plants? It has long been postulated that the cyanoformate anion, [NCCO2](-), forms and then decomposes to carbon dioxide and cyanide during this process. We have now isolated and crystallographically characterized this elusive anion as its tetraphenylphosphonium salt. Theoretical calculations show that cyanoformate has a very weak C-C bond and that it is thermodynamically stable only in low dielectric media.
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