Field-Induced Single Molecule Magnets of Phosphine- and Arsine-Oxides Fondo, Matilde Corredoira-Vázquez, Julio García-Deibe, Ana M. Sanmartín-Matalobos, Jesús Herrera Martínez, Juan Manuel Colacio Rodríguez, Enrique Terbium Dysprosium Triphenylarsine oxide Phosphine oxide Single ion magnet The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fchem. 2018.00420/full#supplementary-material 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 octacoordination 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. 2019-11-14T10:03:02Z 2019-11-14T10:03:02Z 2018-09-12 info:eu-repo/semantics/article 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] http://hdl.handle.net/10481/57885 10.3389/fchem.2018.00420 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Frontiers Media