Group 3 and lanthanide triflate-complexes with [N,N,O]-donor ligands: synthesis, characterization and cytotoxic activity

Group 3 and rare-earth triflate-complexes M(OTf)2(bdmpza) {M = Sc (1Sc), Y (1Y), La (1La), Sm (1Sm), Eu (1Eu) OTf = SO3CF3} bearing the heteroscorpionate bdmpza ligand {bdmpza = bis(3,5- dimethyl-pyrazol-1-yl)acetate} have been synthesized and characterized, together with the yttrium and europium complexes M(OTf)(bdmpza)2 {M = Y (2Y), Eu (2Eu)}. The coordination mode of the [N,N,O]-donor ligand in these complexes has been elucidated by means of DFT calculations. The cytotoxic effect of selected complexes and of the free ligand towards HeLa cells has been evaluated.