RT Journal Article
T1 Field-induced single molecule magnets of phosphine- and arsine-oxides
A1 Fondo Busto, María Matilde
A1 Corredoira Vázquez, Julio
A1 García Deibe, Ana María
A1 Sanmartín Matalobos, Jesús
A1 Herrera, Juan Manuel
A1 Colacio, Enrique
K1 Terbium
K1 Dysprosium
K1 Triphenylarsine oxide
K1 Phosphine oxide
K1 Single ion magnet
AB The coordination chemistry of dysprosium and terbium toward phosphine and arsine oxides was further explored. Thus, the new nitrate [M(NO3)3(Ph3PO)3] (M = Tb, 1; Dy, 2), [Dy(NO3)3(EtOH)(Ph3XO)2] (X = P, 3; As, 4), chloride [DyCl2(Ph3AsO)4]Cl (5), triflate [Dy(OTf)2(MePh2PO)4]OTf (6; OTf = triflate) and hexafluoroacetylacetonate [M(hfa)3(Ph3PO)2] (hfa = hexafluoroacetylacetonate; M = Tb, 7; Dy, 8) complexes were isolated and fully characterized. The crystal structures of 1·CH3CN, 2·CH3CN, 4, 5·2.75EtOH·1.25H2O, 6, 7, and 8 show MO9 cores in 1, 2, and 4, with highly distorted geometry, between spherical capped square antiprism and muffin-like, hexacoordinated environments for the dysprosium ions in 5 and 6, with octahedral geometry, and octa-coordination for the lanthanoid metals in 7 and 8, with geometry closer to square antiprism. Comparison of the magnetic behavior of all the complexes allows analyzing which metal ion (Tb or Dy), phosphine or arsine oxide, or anionic ligand favor more the slow relaxation of the magnetization. Alternating current magnetic measurements show that only 2, 4, and 8 present slow relaxation of the magnetization in the presence of an external magnetic field, 8 being the complex with the highest Ueff (44.85 K) of those described herein
PB Frontiers Media
YR 2018
FD 2018
LK http://hdl.handle.net/10347/22702
UL http://hdl.handle.net/10347/22702
LA eng
NO Fondo M, Corredoira-Vázquez J, García-Deibe AM, Sanmartín-Matalobos J, Herrera JM and Colacio E (2018) Field-Induced Single Molecule Magnets of Phosphine- and Arsine-Oxides. Front. Chem. 6:420. doi: 10.3389/fchem.2018.00420
NO Financial support from Ministerio de Economía yCompetitividad (MINECO, CTQ2014-56312-P), Junta deAndalucía (FQM-195 and Project of excellence P11-FQM-7756)and the University of Granada are grateful acknowledged. JC-Vacknowledges Xunta de Galicia for his Ph.D. fellowship
DS Minerva
RD 24 abr 2026