Cu(II)-assisted oxidation of quinoline-2-carbaldehyde hydrazone to give [1,2,3]triazolo[1,5-α]quinoline: The first example of Cu(I) complex containing [1,2,3]triazolo-ligand

The synthesis, single crystal structure, luminescent and electrochemistry properties of a Cu(I) compound based on in situ formation ligand, namely [1,2,3]triazolo[1,5-α]quinoline(L1), are reported. Complex [image] (1) is the first example of Cu(I) species with [1,2,3]triazole-ligand and provides the direct evidence for Cu(II) role to the ring-closure of hydrazone.