Isotopically enriched polymorphs of dysprosium single molecule magnets

Abstract

A triclinic polymorph Dy(t) and a monoclinic polymorph Dy(m) of [Dy(tta)₃(L)] with L = 4-[6-(1,3-benzothiazol-2-yl)pyridin-3-yl]-4′,5′-bis(methylthio)tetrathiafulvene behave as Single-Molecule Magnets with hysteresis loops opened at zero field. Magnetic properties were enhanced through magnetic dilution and ¹⁶⁴Dy isotopic enrichment which definitively support the importance of isotopes for the control of quantum magnets.