Back Cover: Detection of the Elusive Highly Charged Zintl Ions Si44− and Sn44− in Liquid Ammonia by NMR Spectroscopy (Angew. Chem. Int. Ed. 16/2013). Issue 16 (8th April 2013)

• Record Type: Journal Article
• Authors: Neumeier, Maria; Fendt, Franziska; Gärtner, Stefanie; Koch, Carina; Gärtner, Tobias; Korber, Nikolaus; Gschwind, Ruth M.
• Is Part Of: Angewandte Chemie international edition. Volume 52:Issue 16(2013)
• Page Start: 4494
• Page End: 4494
• Publication Date: 2013-04-08
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201302288
• Languages: English
• ISSNs: 1433-7851

Abstract

<abstract abstract-type="graphical" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <p> <bold>Tetrahedral cages</bold> of tin and silicon are well‐established in solid compounds of these elements with electropositive metals, but for a long time, doubt remained as to whether the classic Zintl formulation of a complete charge transfer would lead to stable anions if extracted by solvents. In their Communication on <ext-link ext-link-type="doi" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink">page 4483 ff.</ext-link>, N. Korber, R. M. Gschwind, and co‐workers present the detection by NMR spectroscopy of Sn₄⁴⁻ and Si₄⁴⁻ dissolved in liquid ammonia.<boxed-text content-type="graphic" position="anchor" orientation="portrait"><graphic position="anchor" mimetype="image" xlink:href="ark:/27927/pgg1xprg2d4" orientation="portrait" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /></boxed-text></p> </abstract>