Jiang, Xue et al. published their research in RSC Advances in 2015 | CAS: 4546-95-6

1H-1,2,3-Triazole-4,5-dicarboxylic acid (cas: 4546-95-6) belongs to triazole derivatives. The many free lone pairs in triazoles make them useful as coordination compounds, although not typically as haptic ligands. Triazole growth retardants such as uniconazole and paclobutrazol have been known to inhibit the biosynthesis of gibberellins by blocking kaurene oxidase, an P450 enzymeFormula: C4H3N3O4

LnIII ion dependent magnetism in heterometallic Cu-Ln complexes based on an azido group and 1,2,3-triazole-4,5-dicarboxylate as co-ligands was written by Jiang, Xue;Han, Song-De;Zhao, Ran;Xu, Jian;Bu, Xian-He. And the article was included in RSC Advances in 2015.Formula: C4H3N3O4 This article mentions the following:

Four Cu-Ln coordination polymers [Cu2Ln(tda)2N3(H2O)4·2H2O] (Ln = Gd (1), Tb (2), Dy (3), Sm (4), tda = 1,2,3-triazole-4,5-dicarboxylate) were synthesized by employing H3tda and azido as co-ligands. Complexes 1–4 exhibit the H bonded three-dimensional (3D) network and intriguing magnetic properties. Among them, 1, 3 and 4 involve antiferromagnetic interaction between metal ions, while 2 exhibits ferromagnetic behavior, demonstrating that magnetic properties could be mediated by a variety of rare earth metal ions. In the experiment, the researchers used many compounds, for example, 1H-1,2,3-Triazole-4,5-dicarboxylic acid (cas: 4546-95-6Formula: C4H3N3O4).

1H-1,2,3-Triazole-4,5-dicarboxylic acid (cas: 4546-95-6) belongs to triazole derivatives. The many free lone pairs in triazoles make them useful as coordination compounds, although not typically as haptic ligands. Triazole growth retardants such as uniconazole and paclobutrazol have been known to inhibit the biosynthesis of gibberellins by blocking kaurene oxidase, an P450 enzymeFormula: C4H3N3O4

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics