2026-04-13T02:44:48Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1752722025-12-04T21:44:50Zcom_2072_1057col_2072_478917col_2072_478933

00925njm 22002777a 4500 dc Mautner, Franz A. author Bierbaumer, Florian author Fischer, Roland C. author Vicente Castillo, Ramón author Tubau Ribot, Ànnia author Ferran, Arnau author Massoud, Salah S. author 2021-03-17T15:58:19Z 2021-03-17T15:58:19Z 2021-02-11 2021-03-17T15:58:20Z Four new Pr(III) mononuclear complexes of formula [Pr(ntfa)3(MeOH)2] (1), [Pr(ntfa)3(bipy)2] (2), [Pr(ntfa)3(4,4′-Mt2bipy)] (3) and [Pr(ntfa)3(5,5′-Me2bipy)] (4), where ntfa = 4,4,4-trifuoro-1-(naphthalen-2-yl)butane-1,3-dionato(1-), 5,5′-Me2bipy = 5,5′-dimethyl-2,2′-dipyridine, 4,4′-Mt2bipy = 4,4′-dimethoxy-2,2′-dipyridine, have been synthesized and structurally characterized. The complexes display the coordination numbers 8 for 1, 3 and 4, and 10 for 2. Magnetic measurements of complexes 1-4 were consistent with a magnetically uncoupled Pr3+ ion in the 3H4 ground state. The solid state luminescence studies showed that the ancillary chelating bipyridyl ligands in the 2-4 complexes greatly enhance the luminescence emission in the visible and NIR regions through efficient energy transfer from the ligands to the central Pr3+ ion; behaving as "antenna" ligands. Luminescència Magnetisme Estructura cristal·lina (Sòlids) Luminescence Magnetism Layer structure (Solids) Structural Characterization, Magnetic and Luminescent Properties of Praseodymium(III)‐4,4,4‐Trifluoro‐1‐(2‐Naphthyl)Butane‐1,3‐Dionato(1‐)Complexes