Guerret, Olivier published the artcile1,2,4-Triazolium-5-ylidene and 1,2,4-triazol-3,5-diylidene as new ligands for transition metals, Synthetic Route of 63598-71-0, the publication is Journal of Organometallic Chemistry (2000), 600(1-2), 112-117, database is CAplus.
Ab initio calculations (RHF-SCF-DZP and MP4) show the 4,5-dihydro-1H-1,2,4-triazolium-5-ylidene and 1,2,4-triazolidine-3,5-diylidene (4a) are true min. on the potential surface. As expected, 4a is much higher in energy than its triazole isomers (1H, 3H and 4H-1,2,4-triazoles) and the 2,3-dihydro-4H-1,2,4-triazol-3-ylidene. NaOMe adds to the triflate salts of diquaternary 1,2-dimethyl-4-alkyl-1H-1,2,4-triazoliums (9b,c; alkyl = Me, iPr) to give the corresponding monocationic heterocycles, 4-alkyl-4,5-dihydro-1,2-dimethyl-5-methoxy-1H-1,2,4-triazolium triflates, in 70 and 50% yield, resp. One equivalent of Ag(I) acetate reacts with 9b leading to the bis(1,2,4-trimethyl-4,5-dihydro-1H-1,2,4-triazolium-5-ylidene)silver(I) complex (11b) in 80% yield. Under the same exptl. conditions, but using two equivalent of Ag(I) acetate, solid-state 1-dimensional polymers 12‘b,c featuring the coplanar 4-alkyl-1,2-dimethyl-1,2,4-triazolidine-3,5-diylidene ligands coordinated to Ag(I) were obtained in 90% yield. 12‘C was fully characterized including a single-crystal x-ray diffraction study.
Journal of Organometallic Chemistry published new progress about 63598-71-0. 63598-71-0 belongs to triazoles, auxiliary class Triazole, name is 4H-1,2,4-Triazole, and the molecular formula is C2H3N3, Synthetic Route of 63598-71-0.
Referemce:
https://en.wikipedia.org/wiki/1,2,3-Triazole,
Triazoles – an overview | ScienceDirect Topics