Methylation of 3-amino-1,2,4-triazole and 1-methyl-3-nitro-1,2,4-triazole provides access to three NHC-precursors. For the nitro compound only a monomethylation to the triazolium salt 3(OTf) is observed. The aminotriazole could be subsequently converted to mono- and dicationic carbene precursors 1I and 2(OTf)₂, respectively. The nitro group on NHC 3 leads to a decrease of donor strength and a slightly enhanced acceptor character as compared to a related NHC lacking the nitro group. The cationic NHC 2 is the poorest donor within the series and shows a TEP value of 2072 cm⁻¹. The properties of this species are dominated by its cationic nature while the influence of the NMe₂ group is surprisingly small. X-ray diffraction studies suggest a guanidinium-like character for the NMe₂ substituted compounds.

3-氨基-1,2,4-三唑和1-甲基-3-硝基-1,2,4-三唑的甲基化提供了使用三个NHC前体的途径。对于硝基化合物，仅观察到三唑鎓盐3（OTf）的单甲基化。随后可以将氨基三唑分别转化为单和双价卡宾前体1I和2（OTf）₂。与缺少硝基的相关NHC相比，NHC 3上的硝基导致供体强度降低，受体特性略有增强。阳离子NHC 2是该系列中最差的供体，显示的TEP值为2072 cm ^-1。该物种的特性主要由其阳离子性质决定，而NMe ₂基团的影响却很小。X射线衍射研究表明NMe ₂取代的化合物具有类似胍的性质。