“…1A) (Daigle et al, 1974) has been recently re-discovered and widely exploited in coordination chemistry due to its ability to coordinate a wide range of metals ions via phosphorus (Daigle, 1998;Phillips et al, 2004;Bravo et al, 2010). Moreover, being highly soluble in water, stable to oxidation, non-toxic and biocompatible, PTA is a promising ligand for metal-based drugs (Casini et al, 2008).…”