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Title: | Diverse coordination numbers and geometries in pyridyl adducts of lanthanide(III) complexes based on beta-diketonate |
Author: | Mautner, Franz A. Bierbaumer, Florian Fischer, Roland C. Torvisco, Ana Vicente Castillo, Ramón Font Bardia, Ma. Mercedes Tubau, Ânnia Speed Castro, Saskia Massoud, Salah S. |
Keywords: | Luminescència Terbi Lantani Luminescence Terbium Lanthanum |
Issue Date: | 2021 |
Publisher: | MDPI |
Abstract: | t: Ten mononuclear rare earth complexes of formula [La(btfa)3 (H2O)2 ] (1), [La(btfa)3 (4,40 - Mt2bipy)] (2), [La(btfa)3 (4,40 -Me2bipy)2 ] (3), [La(btfa)3 (5,50 -Me2bipy)2 ] (4), [La(btfa)3 (terpy)] (5), [La(btfa)3 (phen)(EtOH)] (6), [La(btfa)3 (4,40 -Me2bipy)(EtOH)] (7), [La(btfa)3 (2-benzpy)(MeOH)] (8), [Tb(btfa)3 (4,40 -Me2bipy)] (9) and (Hpy)[Eu(btfa)4 ] (10), where btfa = 4,4,4-trifuoro-1-phenylbutane1,3-dionato anion, 4,40 -Mt2bipy = 4,40 -dimethoxy-2,20 -bipyridine, 4,40 -Me2bipy = 4,40 -dimethyl2,20 -bipyridine, 5,50 -Me2bipy = 5,50 -dimethyl-2,20 -bipyridine, terpy = 2,20 :60 ,20 -terpyridine, phen = 1,10-phenathroline, 2-benzpy = 2-(2-pyridyl)benzimidazole, Hpy = pyridiniumH+ cation) have been synthesized and structurally characterized. The complexes display coordination numbers (CN) eight for 1, 2, 9, 10, nine for 5, 6, 7, 8 and ten for 3 and 4. The solid-state luminescence spectra of Tb-9 and Eu-10 complexes showed the same characteristic bands predicted from the Tb(III) and Eu(III) ions. The Overall Quantum Yield measured (φTOT) at the excitation wavelength of 371 nm for both compounds yielded 1.04% for 9 and up to 34.56% for 10 years. |
Note: | Reproducció del document publicat a: https://doi.org/10.3390/inorganics9100074 |
It is part of: | Inorganics, 2021, vol. 9, num. 10, p. 74 |
URI: | http://hdl.handle.net/2445/184008 |
Related resource: | https://doi.org/10.3390/inorganics9100074 |
ISSN: | 2304-6740 |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) Articles publicats en revistes (Centres Científics i Tecnològics de la Universitat de Barcelona (CCiTUB)) |
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