75368 20190709135446.0 doi 10.1039/c7dt00069c sideral 99199 ART-2017-99199 eng Boca, R. Slow magnetic relaxations in a ladder-type Dy(III) complex and its dinuclear analogue 2017 Access copy available to the general public Unrestricted The complex {[Dy2(PDOA)3(H2O)6]·2H2O}n (1) (H2PDOA = 1, 2-phenylenedioxydiacetic acid) was prepared from aqueous solution. Its crystal structure, built up of {-Dy-O-C-O-}n chains interlinked by PDOA ligands yielding a ladder-like arrangement, was determined at 173 K. 1 exhibits slow magnetic relaxation under a small magnetic field BDC = 0.2 T with two (LF and HF) relaxation channels. The LF relaxation time at BDC = 0.2 T and T = 1.85 K is as slow as t(LF) = 46 ms whereas the HF channel is t(HF) = 1.4 ms. The mole fraction of the LF species is xLF = 0.76 at 1.85 K and it escapes progressively on heating. In the dinuclear analogue [Dy2(PDOA)3(H2O)6]·3.5H2O (2) one PDOA ligand forms a bis(chelate) bridge between the two Dy(iii) atoms yielding a local structure analogous to that in 1; however its AC susceptibility data show slightly different quantitative characteristics of the single-molecule magnetic behaviour. info:eu-repo/grantAgreement/ES/DGA/M4 info:eu-repo/grantAgreement/ES/MINECO/MAT2015-68200-C2-1-P info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.099 2017 CHEMISTRY, INORGANIC & NUCLEAR 6 / 45 = 0.133 2017 Q1 T1 1.306 2017 Inorganic Chemistry 2017 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Stolárová, M. (orcid)0000-0002-0444-996X Falvello, L.R. Universidad de Zaragoza Tomás, M. Titiš, J. Cernák, J. 2010 760 Universidad de Zaragoza Dpto. Química Inorgánica Área Química Inorgánica 46, 16 (2017), 5344-5351 Dalton Trans. Dalton Transactions 1477-9226 1121213 http://zaguan.unizar.es/record/75368/files/texto_completo.pdf Postprint 110130 http://zaguan.unizar.es/record/75368/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:75368 articulos driver 2019-07-09-11:38:29 ARTICLE