“…In the past two decades our efforts have been focused in 1-, 3-and 5-trisubstituted ligands, and, particularly, in incorporating new functional groups in position 1-. For instance, pyrazole ligands bearing groups such as amines [16,17], thioethers [18], sulfoxides/sulfones [19], phosphines [20], phosphinites [21] and alcohols [22] have been obtained, and their coordination behaviour against different metal salts studied. In this sense, we have recently reported the coordination behaviour of one N,O-hybrid pyrazole ligand (2-(3,5-dimethyl-1H-pyrazol-1-yl) ethanol against different Cu(II) salts [23].…”