Structural consequences of the introduction of 2,2′-bipyrimidine as auxiliary ligand in triazolopyrimidine-based transition metal complexes. In vitro antiparasitic activity

► Use of 2,2′-bipyrimidine to generate discrete and extended polynuclear structures based on triazolopyrimidines. ► Influence of auxiliary ligands in the coordination behaviour of triazolopyrimidines. ► Helicoidal Cd(II) polymer based on 5,7-dimethyl-1,2,4-triazolo[1,5-a]pyrimidine.