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Field-induced slow magnetic relaxation in a new family of tetranuclear double-stranded Cu2II-Ln2III metallohelicates Caballero, Sergio Pilichos, Evangelos Font Bardia, Ma. Mercedes Mayans Ayats, Júlia Escuer Fité, Albert Propietats magnètiques Quiralitat Magnetic properties Chirality A series of tetranuclear Cu2IILn2III (LnIII from LaIII to YbIII), double-stranded metallohelicates have been synthesized using a bis-bidentate flexible ligand obtained by condensing o-vanillin with 4,4′-oxydianiline. The complexes exhibit a variety of LnIII environments and decreasing coordination number along the series and several nitrato coordination modes proved by the structural determination of the LaIII (1La), SmIII (4Sm), GdIII (5Gd), ErIII (9Er), and YbIII (10Yb) derivatives. The other members of the family (2Ce, 3Pr, 6Tb, 7Dy, and 8Ho) have been characterized by powder X-ray diffraction to verify their isostructurality. Susceptibility measurements show field-induced slow relaxation of the magnetization for the anisotropic TbIII and DyIII complexes and for the isotropic GdIII system. 2024-12-17T18:53:54Z 2024-12-17T18:53:54Z 2023-03-21 2024-12-17T18:53:54Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1021/acs.cgd.3c00121 Crystal Growth & Design, 2023, vol. 23, p. 3711-3719 https://doi.org/10.1021/acs.cgd.3c00121 cc-by (c) Caballero, Sergio, et al., 2023 http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess American Chemical Society Articles publicats en revistes (Química Inorgànica i Orgànica)