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Updated: Sep 23, 2025

Construction and Systematical Symmetric Studies of a Series of Supramolecular Clusters with Binary or Ternary Ammonium Triphenylacetates
Published on: February 15, 2016
Two Roomtemperature-stable Trications - Triprotonated Triamino- and Tricyanobenzene
Alexander Nitzer1, Robert Hübsch1, Christoph Jessen1
1Department of Chemistry and Pharmacy, LMU Munich, Butenandtstrasse 5-13, 81377, Munich, Germany.
Abstract:
Protonation of 1,3,5-tricyano- and 1,3,5-triaminobenzene was achieved in various superacidic media, resulting in the formation of the respective trinitrilium and triammonium species. Furthermore, the respective N-methyl nitrilium species was synthesized by methylation. Characterization was performed by NMR and vibrational spectroscopy, followed by single-crystal X-ray diffraction analyses of selected species. Fourfold protonation of the amine, which would have led to the triammonium arenium species, could not be achieved. Quantum chemical calculations are employed to enable full vibrational assignment as well to quantify charge localization.
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