Supramolecular control over molecular magnetic materials: γ-cyclodextrin-templated grid of cobalt(II) single-ion magnets.

摘要: Single-ion magnets (SIMs) are potential building blocks of novel quantum computing devices. Unique magnetic properties SIMs require effective separation ions and can be tuned by even slight changes in their coordination sphere geometry. We show that an additional level tailorability the design achieved organizing into supramolecular architectures, resulting gaining control over ion packing. Here, γ-cyclodextrin was used to template Co II nonmagnetic auxiliary Li + form a heterometallic {Co, Li, Li}4 ring. In sandwich-type complex ((γ-CD)2Co4Li8(H2O)12) spatially separated prevented from superexchange coupling. Ac/dc EPR studies demonstrated individual with positive zero-field splitting exhibit field-induced slow relaxation consistent SIMs' behavior, which is exceptional complexes easy-plane anisotropy.