A multidentate ligand based on two triazole groups from “click chemistry” and its copper(II) and iron(II) complexes: synthesis, structure, and electrochemistry

Copper(ii) and zinc(ii) complexes of mono- and bis-1,2,3-triazole-substituted heterocyclic ligands

“…In the CSD database search of transition metal complexes with bis-1,2,3-triazole ligands, seventeen ML and ten ML2 complexes are found. All reported ML2 complexes [23][24][25] are trans-fac isomers and have weakly coordinating anions, while the majority of ML complexes are found with strongly coordinating anions, such as thiocyanate, 26,27 halogenides 27,28 or azides, 29,30 where the anion occupies the remaining coordination sites of the metal.…”

Biantennary Alkyl Triazole Glycosides by Double‐click‐Coupling for Water‐in‐Oil‐Emulsification

“…Although acid-base reactions between triazoles and acid centers at the stationary phase may account for some of the compound loss, the slightly greenish appearance of the crude surfactant precursors before chromatography suggests involvement of copper ions. Previous investigations have demonstrated a strong multidentate coordination of bis-triazoles with Cu 2+ ions (You and Wei, 2014). Attempts to completely remove the catalyst by extraction with EDTA-solution failed based on the color appearance.…”

1,2,3- Triazoles: general and key synthetic strategies

“…However, recent publications have described the use of Cu(II) complexes as catalysts without the use of reducing agents. [113][114][115][116][117][118][119][120] Bagherzadeh et al 121 reported in 2019 the preparation of two Cu(II) complexes (Figure 6) and studied their catalytic potentials against the CuAAC reaction in the absence of reducing agents. The authors were able to prepare different 1H-1,2,3-triazole derivatives from a multicomponent reaction between benzyl chloride, sodium azide and different terminal alkynes with good yields.…”