Triazolate complexes rhenium

In addition to the metal-oxo complexes, several examples of NHC-stabilized rhenium(V)-nitrido complexes exist, e.g., 9 and 10 (Chart 1) [28]. These adducts, which feature triazole-based ligands, were prepared via displacement of phosphine ligands. The stability of both phosphine and triazole-based carbenes in these reactions suggest the nitrido ligand is relatively unreactive. 

The use of Tapy (l-(2-pyridyl)-l,2,3-triazole) ligand bearing long allqrl chains demonstrates an impressive enhancement of the luminescent properties of the rhenium complexes in aqueous medium relative to the parent Pyta complex." ... 

---