RT Journal Article
T1 Slow magnetic relaxation in dinuclear dysprosium and holmium  phenoxide bridged complexes: a Dy2 single molecule magnet with  a high energy barrier
A1 Fondo Busto, María Matilde
A1 Corredoira Vázquez, Julio
A1 García Deibe, Ana María
A1 Sanmartín Matalobos, Jesús
A1 Gómez-Coca, Silvia
A1 Ruíz, Eliseo
A1 Colacio, Enrique
K1 Disprosio
K1 Holmio
K1 Lántánidos
AB Dinuclear  [M(H3L1,2,4)]2  (M  =  Dy,  Dy2;  M  =  Ho,  Ho2)  complexes  were  isolated  from  an  heptadentate aminophenol ligand. The crystal structures of Dy2∙2THF, and the pyridine adducts Dy2∙2Py and Ho2∙2Py, show that the complexes are dinuclear, with unsupported double phenoxide bridges, and that the N4O4 environment of the LnIII centres is distorted triangular dodecahedral. The magnetic analysis of Dy2 and Ho2 shows that Dy2 is  a  single  molecular  magnet  (SMM),  with  a  thermal‐activated  zero‐field  effective  energy  barrier  (Ueff)  of 367.7 K, the largest barrier shown by double phenoxide‐bridged dinuclear dysprosium complexes to date. Ho2is one of the scarce dinuclear complexes showing frequency‐dependence for the out‐of‐phase component of susceptibility, although it does not even show field‐induced SMM behaviour above 2 K. Ab initio calculations were done in order to shed light on the magnetic dynamics of the complexes, and these studies support the experimental magnetic results.
PB The Royal Society of Chemistry
YR 2021
FD 2021
LK http://hdl.handle.net/10347/31910
UL http://hdl.handle.net/10347/31910
LA eng
NO Inorg. Chem. Front., 2021,8, 2532-2541
DS Minerva
RD 29 abr 2026