High-temperature magnetic blocking and magneto-structural correlations in a series of dysprosium(iii) metallocenium single-molecule magnets.

ABSTRACT: A series of dysprosium(iii) metallocenium salts, [Dy(Cp^iPr4R)₂][B(C₆F₅)₄] (R = H (1), Me (2), Et (3), iPr (4)), was synthesized by reaction of DyI₃ with the corresponding known NaCp^iPr4R (R = H, iPr) and novel NaCp^iPr4R (R = Me, Et) salts at high temperature, followed by iodide abstraction with [H(SiEt₃)₂][B(C₆F₅)₄]. Variation of the substituents in this series results in substantial changes in molecular structure, with more sterically-encumbering cyclopentadienyl ligands promoting longer Dy-C distances and larger Cp-Dy-Cp angles. Dc and ac magnetic susceptibility data reveal that these structural changes have a considera

SUBMITTER: Randall McClain K 

PROVIDER: S-EPMC6256727 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature