Yuan, Gang et al. published their research in Solid State Sciences in 2011 | 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. Due to the structural characteristics, both 1,2,3- and 1,2,4-triazoles are able to accommodate a broad range of substituents (electrophiles and nucleophiles) around the core structures and pave the way for the construction of diverse novel bioactive molecules.Synthetic Route of C4H3N3O4

Syntheses, structures, and photoluminescence of d10 coordination architectures: From 1D to 3D complexes based on mixed ligands was written by Yuan, Gang;Shao, Kui-Zhan;Du, Dong-Ying;Wang, Xin-Long;Su, Zhong-Min. And the article was included in Solid State Sciences in 2011.Synthetic Route of C4H3N3O4 This article mentions the following:

Six new compounds, namely, {[Cd3(Himpy)3(tda)2]·3H2O}n (1), {[Zn3(bipy)2(tda)2(H2O)2]·4H2O}n (2), {[Cd3(bipy)3(tda)2]·4H2O}n (3), {[Cd3(tda)2(H2O)3Cl]·H2O}n (4), {[Zn2(tz)(tda)(H2O)2]·H2O}n (5) and {[Cd7(pz)(tda)4(OAc)(H2O)7]·3H2O}n (6) [H3tda = 1H-1,2,3-triazole-4,5-dicarboxylic acid, Himpy = 2-(1H-imidazol-2-yl)pyridine, bipy = 2,2′-bipyridine, Htz = 1H-1,2,4-triazole, H2pz = piperazine] were prepared under hydrothermal condition and characterized by elemental analyses, IR spectroscopy, powder x-ray diffraction and single-crystal X-ray diffraction analyses. Compound 1 is a 1D column-like structure and displays a 3D supramol. network via the π···π stacking interaction. The compounds 2 and 3 exhibit similar 2D layer-like structure, which further extend to 3D supermol. structure by the π···π stacking interaction. All of compounds 4–6 display 3D framework with diverse topol. constructed from the tda3- ligands in different coordination modes and secondary ligands (or bridging atom) connecting metal ions. Furthermore, the thermal stabilities and photoluminescent properties of compounds 1–6 were studied. In the experiment, the researchers used many compounds, for example, 1H-1,2,3-Triazole-4,5-dicarboxylic acid (cas: 4546-95-6Synthetic Route of 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. Due to the structural characteristics, both 1,2,3- and 1,2,4-triazoles are able to accommodate a broad range of substituents (electrophiles and nucleophiles) around the core structures and pave the way for the construction of diverse novel bioactive molecules.Synthetic Route of C4H3N3O4

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