“…Many relatively recent reports [4][5][6][7][8] have analyzed the chemical and biological applications of triazolium ylids and of their derivatives. Besides the multiple applications of the 1,2,4-triazolium derivatives [2][3][4][5][6][7][8], the ylids having 1,2,4-Symmetry 2021, 13, 1656. https://doi.org/10.3390/sym13091656 https://www.mdpi.com/journal/symmetry Symmetry 2021, 13, 1656 2 of 21 triazolium derivatives as cation [9,10] are known as precursors to obtaining new heterocycle compounds, which are very important in the pharmaceutical industry. 1,2,4-Triazol-1-ium ylids are dipolar and polarizable heterocyclic compounds with opposite charges located near one positive nitrogen belonging to a triazolium ring and near the negative carbon, named carbanion [9,10].…”