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Lewis Superacidic Tellurenyl Cation‐Induced Electrophilic Activation of an Inert Carborane.
- Source :
-
Chemistry - A European Journal . 10/21/2021, Vol. 27 Issue 59, p14577-14581. 5p. - Publication Year :
- 2021
-
Abstract
- The aryltellurenyl cation [2‐(tBuNCH)C6H4Te]+, a Lewis super acid, and the weakly coordinating carborane anion [CB11H12]−, an extremely weak Brønsted acid (pKa=131.0 in MeCN), form an isolable ion pair complex [2‐(tBuNCH)C6H4Te][CB11H12], in which the Brønsted acidity (pKa 7.4 in MeCN) of the formally hydridic B−H bonds is dramatically increased by more than 120 orders of magnitude. The electrophilic activation of B−H bonds in the carborane moiety gives rise to a proton transfer from boron to nitrogen at slightly elevated temperatures, as rationalized by the isolation of a mixture of the zwitterionic isomers 12‐ and 7‐[2‐(tBuN{H}CH)C6H4Te(CB11H11)] in ratios ranging from 62 : 38 to 80 : 20. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SUPERACIDS
*BRONSTED acids
*ION pairs
*LEWIS acids
*ISOMERS
*TRP channels
Subjects
Details
- Language :
- English
- ISSN :
- 09476539
- Volume :
- 27
- Issue :
- 59
- Database :
- Academic Search Index
- Journal :
- Chemistry - A European Journal
- Publication Type :
- Academic Journal
- Accession number :
- 153207566
- Full Text :
- https://doi.org/10.1002/chem.202103181