| Autor: |
Mayer, Martin, van Lessen, Valentin, Rohdenburg, Markus, Gao-Lei Hou, Zheng Yang, Exner, Rüdiger M., Aprà, Edoardo, Azov, Vladimir A., Grabowsky, Simon, Xantheas, Sotiris S., Asmis, Knut R., Xue-Bin Wang, Jenne, Carsten, Warneke, Jonas |
| Předmět: |
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| Zdroj: |
Proceedings of the National Academy of Sciences of the United States of America; 4/23/2019, Vol. 116 Issue 17, p8167-8172, 6p |
| Abstrakt: |
Chemically binding to argon (Ar) at room temperature has remained the privilege of the most reactive electrophiles, all of which are cationic (or even dicationic) in nature. Herein, we report a concept for the rational design of anionic superelectrophiles that are composed of a strong electrophilic center firmly embedded in a negatively charged framework of exceptional stability. To validate our concept, we synthesized the percyano-dodecoborate [B12(CN)12]2-, the electronically most stable dianion ever investigated experimentally. It serves as a precursor for the generation of the monoanion [B12(CN)11]-, which indeed spontaneously binds Ar at 298 K. Our mass spectrometric and spectroscopic studies are accompanied by high-level computational investigations including a bonding analysis of the exceptional B-Ar bond. The detection and characterization of this highly reactive, structurally stable anionic superelectrophile starts another chapter in the metal-free activation of particularly inert compounds and elements. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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